1 # Copyright
(C
) 1999, 2001, 2003, 2004, 2005, 2006, 2007, 2008
2 # Free Software Foundation
, Inc.
4 # This
program is free software
; you can redistribute it and
/or modify
5 # it under the terms of the GNU General Public License as published by
6 # the Free Software Foundation
; either version
3 of the License
, or
7 #
(at your option
) any later version.
9 # This
program is distributed in the hope that it will be useful
,
10 # but WITHOUT
ANY WARRANTY
; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the
12 # GNU General Public License
for more details.
14 # You should have received a copy of the GNU General Public License
15 # along with GCC
; see the file COPYING3.
If not see
16 #
<http
://www.gnu.org
/licenses
/>.
18 # Please email
any bugs
, comments
, and
/or additions to this file to
:
19 # gcc
-patches@gcc.gnu.org
21 # This file defines procs
for determining features supported by the target.
23 # Try to
compile the code given by CONTENTS into an output file of
24 # type TYPE
, where TYPE is as
for target_compile.
Return a list
25 # whose first element contains the compiler messages and whose
26 # second element is the
name of the output file.
28 # BASENAME is a prefix to use
for source and output files.
29 #
If ARGS is not empty
, its first element is a string that
30 # should be added to the command line.
32 # Assume by default that CONTENTS is C code. C
++ code should contain
33 #
"// C++" and Fortran code should contain "! Fortran".
34 proc check_compile
{basename type contents
args} {
37 if { [llength $
args] > 0 } {
38 set options
[list
"additional_flags=[lindex $args 0]"]
42 switch -glob
-- $contents
{
43 "*! Fortran*" { set src ${basename}[pid].f90 }
44 "*// C++*" { set src ${basename}[pid].cc }
45 default
{ set src $
{basename
}[pid
].c
}
47 set compile_type $type
49 assembly
{ set output $
{basename
}[pid
].s
}
50 object
{ set output $
{basename
}[pid
].o
}
51 executable
{ set output $
{basename
}[pid
].exe
}
53 set output $
{basename
}[pid
].s
54 lappend options
"additional_flags=-fdump-$type"
55 set compile_type assembly
61 set lines
[$
{tool
}_target_compile $src $output $compile_type
"$options"]
64 set scan_output $output
65 # Don
't try folding this into the switch above; calling "glob" before the
66 # file is created won't work.
67 if [regexp
"rtl-(.*)" $type dummy rtl_type] {
68 set scan_output
"[glob $src.\[0-9\]\[0-9\]\[0-9\]r.$rtl_type]"
72 return [list $lines $scan_output
]
75 proc current_target_name
{ } {
77 if [info exists target_info
(target
,name)] {
78 set answer $target_info
(target
,name)
85 # Implement an effective
-target check
for property PROP by invoking
86 # the Tcl command
ARGS and seeing
if it returns true.
88 proc check_cached_effective_target
{ prop
args } {
91 set target
[current_target_name
]
92 if {![info exists et_cache
($prop
,target
)]
93 || $et_cache
($prop
,target
) != $target
} {
94 verbose
"check_cached_effective_target $prop: checking $target" 2
95 set et_cache
($prop
,target
) $target
96 set et_cache
($prop
,value
) [uplevel eval $
args]
98 set value $et_cache
($prop
,value
)
99 verbose
"check_cached_effective_target $prop: returning $value for $target" 2
103 # Like check_compile
, but
delete the output file and
return true
if the
104 # compiler printed no messages.
105 proc check_no_compiler_messages_nocache
{args} {
106 set result
[eval check_compile $
args]
107 set lines
[lindex $result
0]
108 set output
[lindex $result
1]
109 remote_file build
delete $output
110 return [string match
"" $lines]
113 # Like check_no_compiler_messages_nocache
, but
cache the result.
114 # PROP is the
property we
're checking, and doubles as a prefix for
115 # temporary filenames.
116 proc check_no_compiler_messages {prop args} {
117 return [check_cached_effective_target $prop {
118 eval [list check_no_compiler_messages_nocache $prop] $args
122 # Like check_compile, but return true if the compiler printed no
123 # messages and if the contents of the output file satisfy PATTERN.
124 # If PATTERN has the form "!REGEXP", the contents satisfy it if they
125 # don't match regular expression REGEXP
, otherwise they satisfy it
126 #
if they
do match regular expression PATTERN.
(PATTERN can start
127 # with something like
"[!]" if the regular expression needs to match
128 #
"!" as the first character.)
130 #
Delete the output file before returning. The other arguments are
131 # as
for check_compile.
132 proc check_no_messages_and_pattern_nocache
{basename pattern
args} {
135 set result
[eval
[list check_compile $basename
] $
args]
136 set lines
[lindex $result
0]
137 set output
[lindex $result
1]
140 if { [string match
"" $lines] } {
141 set chan
[open
"$output"]
142 set invert
[regexp
{^
!(.
*)} $pattern dummy pattern
]
143 set ok
[expr
{ [regexp $pattern
[read $chan
]] != $invert
}]
147 remote_file build
delete $output
151 # Like check_no_messages_and_pattern_nocache
, but
cache the result.
152 # PROP is the
property we
're checking, and doubles as a prefix for
153 # temporary filenames.
154 proc check_no_messages_and_pattern {prop pattern args} {
155 return [check_cached_effective_target $prop {
156 eval [list check_no_messages_and_pattern_nocache $prop $pattern] $args
160 # Try to compile and run an executable from code CONTENTS. Return true
161 # if the compiler reports no messages and if execution "passes" in the
162 # usual DejaGNU sense. The arguments are as for check_compile, with
163 # TYPE implicitly being "executable".
164 proc check_runtime_nocache {basename contents args} {
167 set result [eval [list check_compile $basename executable $contents] $args]
168 set lines [lindex $result 0]
169 set output [lindex $result 1]
172 if { [string match "" $lines] } {
173 # No error messages, everything is OK.
174 set result [remote_load target "./$output" "" ""]
175 set status [lindex $result 0]
176 verbose "check_runtime_nocache $basename: status is <$status>" 2
177 if { $status == "pass" } {
181 remote_file build delete $output
185 # Like check_runtime_nocache, but cache the result. PROP is the
186 # property we're checking
, and doubles as a prefix
for temporary
188 proc check_runtime
{prop
args} {
191 return [check_cached_effective_target $prop
{
192 eval
[list check_runtime_nocache $prop
] $
args
196 ###############################
197 # proc check_weak_available
{ }
198 ###############################
200 # weak symbols are only supported in some configs
/object formats
201 # this proc returns
1 if they
're supported, 0 if they're not
, or
-1 if unsure
203 proc check_weak_available
{ } {
204 global target_triplet
207 # All mips targets should support it
209 if { [ string first
"mips" $target_cpu ] >= 0 } {
213 # All solaris2 targets should support it
215 if { [regexp
".*-solaris2.*" $target_triplet] } {
219 # DEC OSF
/1/Digital UNIX
/Tru64 UNIX supports it
221 if { [regexp
"alpha.*osf.*" $target_triplet] } {
225 # Windows targets Cygwin and MingW32 support it
227 if { [regexp
".*mingw32|.*cygwin" $target_triplet] } {
231 # HP
-UX
10.X doesn
't support it
233 if { [istarget "hppa*-*-hpux10*"] } {
237 # ELF and ECOFF support it. a.out does with gas/gld but may also with
238 # other linkers, so we should try it
240 set objformat [gcc_target_object_format]
248 unknown { return -1 }
253 ###############################
254 # proc check_visibility_available { what_kind }
255 ###############################
257 # The visibility attribute is only support in some object formats
258 # This proc returns 1 if it is supported, 0 if not.
259 # The argument is the kind of visibility, default/protected/hidden/internal.
261 proc check_visibility_available { what_kind } {
263 global target_triplet
265 # On NetWare, support makes no sense.
266 if { [istarget *-*-netware*] } {
270 if [string match "" $what_kind] { set what_kind "hidden" }
272 return [check_no_compiler_messages visibility_available_$what_kind object "
273 void f() __attribute__((visibility(\"$what_kind\")));
278 ###############################
279 # proc check_alias_available { }
280 ###############################
282 # Determine if the target toolchain supports the alias attribute.
284 # Returns 2 if the target supports aliases. Returns 1 if the target
285 # only supports weak aliased. Returns 0 if the target does not
286 # support aliases at all. Returns -1 if support for aliases could not
289 proc check_alias_available { } {
290 global alias_available_saved
293 if [info exists alias_available_saved] {
294 verbose "check_alias_available returning saved $alias_available_saved" 2
298 verbose "check_alias_available compiling testfile $src" 2
299 set f [open $src "w"]
300 # Compile a small test program. The definition of "g" is
301 # necessary to keep the Solaris assembler from complaining
303 puts $f "#ifdef __cplusplus\nextern \"C\"\n#endif\n"
304 puts $f "void g() {} void f() __attribute__((alias(\"g\")));"
306 set lines [${tool}_target_compile $src $obj object ""]
308 remote_file build delete $obj
310 if [string match "" $lines] then {
311 # No error messages, everything is OK.
312 set alias_available_saved 2
314 if [regexp "alias definitions not supported" $lines] {
315 verbose "check_alias_available target does not support aliases" 2
317 set objformat [gcc_target_object_format]
319 if { $objformat == "elf" } {
320 verbose "check_alias_available but target uses ELF format, so it ought to" 2
321 set alias_available_saved -1
323 set alias_available_saved 0
326 if [regexp "only weak aliases are supported" $lines] {
327 verbose "check_alias_available target supports only weak aliases" 2
328 set alias_available_saved 1
330 set alias_available_saved -1
335 verbose "check_alias_available returning $alias_available_saved" 2
338 return $alias_available_saved
341 # Returns true if --gc-sections is supported on the target.
343 proc check_gc_sections_available { } {
344 global gc_sections_available_saved
347 if {![info exists gc_sections_available_saved]} {
348 # Some targets don't support gc
-sections despite whatever
's
349 # advertised by ld's options.
350 if { [istarget alpha
*-*-*]
351 ||
[istarget ia64
-*-*] } {
352 set gc_sections_available_saved
0
356 # elf2flt uses
-q
(--emit
-relocs
), which is incompatible with
358 if { [board_info target
exists ldflags
]
359 && [regexp
" -elf2flt\[ =\]" " [board_info target ldflags] "] } {
360 set gc_sections_available_saved
0
364 # VxWorks kernel modules are relocatable objects linked with
-r
,
365 #
while RTP executables are linked with
-q
(--emit
-relocs
).
366 # Both of these options are incompatible with
--gc
-sections.
367 if { [istarget
*-*-vxworks
*] } {
368 set gc_sections_available_saved
0
372 # Check
if the
ld used by gcc supports
--gc
-sections.
373 set gcc_spec
[$
{tool
}_target_compile
"-dumpspecs" "" "none" ""]
374 regsub
".*\n\*linker:\[ \t\]*\n(\[^ \t\n\]*).*" "$gcc_spec" {\1} linker
375 set gcc_ld
[lindex
[$
{tool
}_target_compile
"-print-prog-name=$linker" "" "none" ""] 0]
376 set ld_output
[remote_exec host
"$gcc_ld" "--help"]
377 if { [ string first
"--gc-sections" $ld_output ] >= 0 } {
378 set gc_sections_available_saved
1
380 set gc_sections_available_saved
0
383 return $gc_sections_available_saved
386 #
Return 1 if according to target_info struct and explicit target list
387 # target is supposed to support trampolines.
389 proc check_effective_target_trampolines
{ } {
390 if [target_info
exists no_trampolines
] {
393 if { [istarget avr
-*-*]
394 ||
[istarget hppa2.0w
-hp
-hpux11.23
]
395 ||
[istarget hppa64
-hp
-hpux11.23
] } {
401 #
Return 1 if according to target_info struct and explicit target list
402 # target is supposed to keep null pointer checks. This could be due to
403 # use of option fno
-delete-null
-pointer
-checks or hardwired in target.
405 proc check_effective_target_keeps_null_pointer_checks
{ } {
406 if [target_info
exists keeps_null_pointer_checks
] {
409 if { [istarget avr
-*-*] } {
415 #
Return true
if profiling is supported
on the target.
417 proc check_profiling_available
{ test_what
} {
418 global profiling_available_saved
420 verbose
"Profiling argument is <$test_what>" 1
422 # These conditions depend
on the
argument so examine them before
423 # looking at the
cache variable.
425 # Support
for -p
on solaris2 relies
on mcrt1.o which comes with the
426 # vendor compiler. We cannot reliably predict the directory where the
427 # vendor compiler
(and thus mcrt1.o
) is installed so we can
't
428 # necessarily find mcrt1.o even if we have it.
429 if { [istarget *-*-solaris2*] && [lindex $test_what 1] == "-p" } {
433 # Support for -p on irix relies on libprof1.a which doesn't appear to
434 # exist
on any irix6
system currently posting testsuite results.
435 # Support
for -pg
on irix relies
on gcrt1.o which doesn
't exist yet.
436 # See: http://gcc.gnu.org/ml/gcc/2002-10/msg00169.html
437 if { [istarget mips*-*-irix*]
438 && ([lindex $test_what 1] == "-p" || [lindex $test_what 1] == "-pg") } {
442 # We don't yet support profiling
for MIPS16.
443 if { [istarget mips
*-*-*]
444 && ![check_effective_target_nomips16
]
445 && ([lindex $test_what
1] == "-p"
446 ||
[lindex $test_what
1] == "-pg") } {
450 # MinGW does not support
-p.
451 if { [istarget
*-*-mingw
*] && [lindex $test_what
1] == "-p" } {
455 # At present
, there is no profiling support
on NetWare.
456 if { [istarget
*-*-netware
*] } {
460 # uClibc does not have gcrt1.o.
461 if { [check_effective_target_uclibc
]
462 && ([lindex $test_what
1] == "-p"
463 ||
[lindex $test_what
1] == "-pg") } {
467 # Now examine the
cache variable.
468 if {![info exists profiling_available_saved
]} {
469 # Some targets don
't have any implementation of __bb_init_func or are
470 # missing other needed machinery.
471 if { [istarget mmix-*-*]
472 || [istarget arm*-*-eabi*]
473 || [istarget arm*-*-elf]
474 || [istarget arm*-*-symbianelf*]
475 || [istarget avr-*-*]
476 || [istarget bfin-*-*]
477 || [istarget powerpc-*-eabi*]
478 || [istarget cris-*-*]
479 || [istarget crisv32-*-*]
480 || [istarget fido-*-elf]
481 || [istarget h8300-*-*]
482 || [istarget m32c-*-elf]
483 || [istarget m68k-*-elf]
484 || [istarget m68k-*-uclinux*]
485 || [istarget mips*-*-elf*]
486 || [istarget xstormy16-*]
487 || [istarget xtensa*-*-elf]
488 || [istarget *-*-vxworks*] } {
489 set profiling_available_saved 0
491 set profiling_available_saved 1
495 return $profiling_available_saved
498 # Return 1 if target has packed layout of structure members by
499 # default, 0 otherwise. Note that this is slightly different than
500 # whether the target has "natural alignment": both attributes may be
503 proc check_effective_target_default_packed { } {
504 return [check_no_compiler_messages default_packed assembly {
505 struct x { char a; long b; } c;
506 int s[sizeof (c) == sizeof (char) + sizeof (long) ? 1 : -1];
510 # Return 1 if target has PCC_BITFIELD_TYPE_MATTERS defined. See
511 # documentation, where the test also comes from.
513 proc check_effective_target_pcc_bitfield_type_matters { } {
514 # PCC_BITFIELD_TYPE_MATTERS isn't just about unnamed or empty
515 # bitfields
, but let
's stick to the example code from the docs.
516 return [check_no_compiler_messages pcc_bitfield_type_matters assembly {
517 struct foo1 { char x; char :0; char y; };
518 struct foo2 { char x; int :0; char y; };
519 int s[sizeof (struct foo1) != sizeof (struct foo2) ? 1 : -1];
523 # Return 1 if thread local storage (TLS) is supported, 0 otherwise.
525 # This won't change
for different subtargets so
cache the result.
527 proc check_effective_target_tls
{} {
528 return [check_no_compiler_messages tls assembly
{
530 int f
(void
) { return i
; }
531 void g
(int j
) { i
= j
; }
535 #
Return 1 if *native
* thread local storage
(TLS
) is supported
, 0 otherwise.
537 # This won
't change for different subtargets so cache the result.
539 proc check_effective_target_tls_native {} {
540 # VxWorks uses emulated TLS machinery, but with non-standard helper
541 # functions, so we fail to automatically detect it.
542 global target_triplet
543 if { [regexp ".*-.*-vxworks.*" $target_triplet] } {
547 return [check_no_messages_and_pattern tls_native "!emutls" assembly {
549 int f (void) { return i; }
550 void g (int j) { i = j; }
554 # Return 1 if TLS executables can run correctly, 0 otherwise.
556 # This won't change
for different subtargets so
cache the result.
558 proc check_effective_target_tls_runtime
{} {
559 return [check_runtime tls_runtime
{
560 __thread
int thr
= 0;
561 int main
(void
) { return thr
; }
565 #
Return 1 if compilation with
-fgraphite is error
-free
for trivial
568 proc check_effective_target_fgraphite
{} {
569 return [check_no_compiler_messages fgraphite object
{
574 #
Return 1 if compilation with
-fopenmp is error
-free
for trivial
577 proc check_effective_target_fopenmp
{} {
578 return [check_no_compiler_messages fopenmp object
{
583 #
Return 1 if compilation with
-pthread is error
-free
for trivial
586 proc check_effective_target_pthread
{} {
587 return [check_no_compiler_messages pthread object
{
592 #
Return 1 if the target supports
-fstack
-protector
593 proc check_effective_target_fstack_protector
{} {
594 return [check_runtime fstack_protector
{
595 int main
(void
) { return 0; }
596 } "-fstack-protector"]
599 #
Return 1 if compilation with
-freorder
-blocks
-and
-partition is error
-free
600 #
for trivial code
, 0 otherwise.
602 proc check_effective_target_freorder
{} {
603 return [check_no_compiler_messages freorder object
{
605 } "-freorder-blocks-and-partition"]
608 #
Return 1 if -fpic and
-fPIC are supported
, as in no warnings or errors
609 # emitted
, 0 otherwise. Whether a shared library can actually be built is
610 # out of scope
for this test.
612 proc check_effective_target_fpic
{ } {
613 # Note that M68K has a multilib that supports
-fpic but not
614 #
-fPIC
, so we need to check both. We test with a
program that
615 # requires GOT references.
616 foreach
arg {fpic fPIC
} {
617 if [check_no_compiler_messages $
arg object
{
618 extern
int foo
(void
); extern
int bar
;
619 int baz
(void
) { return foo
() + bar
; }
627 #
Return true
if the target supports
-mpaired
-single
(as used
on MIPS
).
629 proc check_effective_target_mpaired_single
{ } {
630 return [check_no_compiler_messages mpaired_single object
{
635 #
Return true
if the target has access to FPU instructions.
637 proc check_effective_target_hard_float
{ } {
638 if { [istarget mips
*-*-*] } {
639 return [check_no_compiler_messages hard_float assembly
{
640 #
if (defined __mips_soft_float || defined __mips16
)
646 # The generic test equates hard_float with
"no call for adding doubles".
647 return [check_no_messages_and_pattern hard_float
"!\\(call" rtl-expand {
648 double a
(double b
, double c
) { return b
+ c
; }
652 #
Return true
if the target is a
64-bit MIPS target.
654 proc check_effective_target_mips64
{ } {
655 return [check_no_compiler_messages mips64 assembly
{
662 #
Return true
if the target is a MIPS target that does not produce
665 proc check_effective_target_nomips16
{ } {
666 return [check_no_compiler_messages nomips16 object
{
670 /* A cheap way of testing
for -mflip
-mips16.
*/
671 void foo
(void
) { asm
("addiu $20,$20,1"); }
672 void bar
(void
) { asm
("addiu $20,$20,1"); }
677 # Add the options needed
for MIPS16 function attributes. At the moment
,
678 # we don
't support MIPS16 PIC.
680 proc add_options_for_mips16_attribute { flags } {
681 return "$flags -mno-abicalls -fno-pic -DMIPS16=__attribute__((mips16))"
684 # Return true if we can force a mode that allows MIPS16 code generation.
685 # We don't support MIPS16 PIC
, and only support MIPS16
-mhard
-float
688 proc check_effective_target_mips16_attribute
{ } {
689 return [check_no_compiler_messages mips16_attribute assembly
{
693 #
if defined __mips_hard_float \
694 && (!defined _ABIO32 || _MIPS_SIM
!= _ABIO32
) \
695 && (!defined _ABIO64 || _MIPS_SIM
!= _ABIO64
)
698 } [add_options_for_mips16_attribute
""]]
701 #
Return 1 if the current multilib does not generate PIC by default.
703 proc check_effective_target_nonpic
{ } {
704 return [check_no_compiler_messages nonpic assembly
{
711 #
Return 1 if the target does not use a
status wrapper.
713 proc check_effective_target_unwrapped
{ } {
714 if { [target_info needs_status_wrapper
] != "" \
715 && [target_info needs_status_wrapper
] != "0" } {
721 #
Return true
if iconv is supported
on the target. In particular IBM1047.
723 proc check_iconv_available
{ test_what
} {
726 #
If the tool configuration file has not
set libiconv
, try
"-liconv"
727 if { ![info exists libiconv
] } {
728 set libiconv
"-liconv"
730 set test_what
[lindex $test_what
1]
731 return [check_runtime_nocache $test_what
[subst
{
737 cd
= iconv_open
("$test_what", "UTF-8");
738 if (cd
== (iconv_t
) -1)
745 #
Return true
if named sections are supported
on this target.
747 proc check_named_sections_available
{ } {
748 return [check_no_compiler_messages named_sections assembly
{
749 int __attribute__
((section
("whatever"))) foo;
753 #
Return 1 if the target supports Fortran real kinds larger than real
(8),
756 # When the target
name changes
, replace the cached result.
758 proc check_effective_target_fortran_large_real
{ } {
759 return [check_no_compiler_messages fortran_large_real executable
{
761 integer,parameter
:: k
= selected_real_kind
(precision
(0.0_8
) + 1)
768 #
Return 1 if the target supports Fortran
integer kinds larger than
769 #
integer(8), 0 otherwise.
771 # When the target
name changes
, replace the cached result.
773 proc check_effective_target_fortran_large_int
{ } {
774 return [check_no_compiler_messages fortran_large_int executable
{
776 integer,parameter
:: k
= selected_int_kind
(range
(0_8
) + 1)
782 #
Return 1 if the target supports Fortran
integer(16), 0 otherwise.
784 # When the target
name changes
, replace the cached result.
786 proc check_effective_target_fortran_integer_16
{ } {
787 return [check_no_compiler_messages fortran_integer_16 executable
{
794 #
Return 1 if we can statically link libgfortran
, 0 otherwise.
796 # When the target
name changes
, replace the cached result.
798 proc check_effective_target_static_libgfortran
{ } {
799 return [check_no_compiler_messages static_libgfortran executable
{
806 #
Return 1 if the target supports executing
750CL paired
-single instructions
, 0
807 # otherwise.
Cache the result.
809 proc check_750cl_hw_available
{ } {
810 return [check_cached_effective_target
750cl_hw_available
{
811 #
If this is not the right target
then we can skip the test.
812 if { ![istarget powerpc
-*paired
*] } {
815 check_runtime_nocache
750cl_hw_available
{
819 asm volatile
("ps_mul v0,v0,v0");
821 asm volatile
("ps_mul 0,0,0");
830 #
Return 1 if the target supports executing SSE2 instructions
, 0
831 # otherwise.
Cache the result.
833 proc check_sse2_hw_available
{ } {
834 return [check_cached_effective_target sse2_hw_available
{
835 #
If this is not the right target
then we can skip the test.
836 if { !([istarget x86_64
-*-*] ||
[istarget i?
86-*-*]) } {
839 check_runtime_nocache sse2_hw_available
{
843 unsigned
int eax
, ebx
, ecx
, edx
= 0;
844 if (__get_cpuid
(1, &eax
, &ebx
, &ecx
, &edx
))
845 return !(edx
& bit_SSE2
);
853 #
Return 1 if the target supports executing AltiVec instructions
, 0
854 # otherwise.
Cache the result.
856 proc check_vmx_hw_available
{ } {
857 return [check_cached_effective_target vmx_hw_available
{
858 # Some simulators are known to not support VMX instructions.
859 if { [istarget powerpc
-*-eabi
] ||
[istarget powerpc
*-*-eabispe
] } {
862 # Most targets don
't require special flags for this test case, but
864 if { [istarget *-*-darwin*]
865 || [istarget *-*-aix*] } {
866 set options "-maltivec"
870 check_runtime_nocache vmx_hw_available {
874 asm volatile ("vor v0,v0,v0");
876 asm volatile ("vor 0,0,0");
885 # GCC 3.4.0 for powerpc64-*-linux* included an ABI fix for passing
886 # complex float arguments. This affects gfortran tests that call cabsf
887 # in libm built by an earlier compiler. Return 1 if libm uses the same
888 # argument passing as the compiler under test, 0 otherwise.
890 # When the target name changes, replace the cached result.
892 proc check_effective_target_broken_cplxf_arg { } {
893 return [check_cached_effective_target broken_cplxf_arg {
894 # Skip the work for targets known not to be affected.
895 if { ![istarget powerpc64-*-linux*] } {
897 } elseif { ![is-effective-target lp64] } {
900 check_runtime_nocache broken_cplxf_arg {
902 extern void abort (void);
904 float cabsf (_Complex float);
911 if (fabsf (f - 5.0) > 0.0001)
920 proc check_alpha_max_hw_available { } {
921 return [check_runtime alpha_max_hw_available {
922 int main() { return __builtin_alpha_amask(1<<8) != 0; }
926 # Returns true iff the FUNCTION is available on the target system.
927 # (This is essentially a Tcl implementation of Autoconf's
930 proc check_function_available
{ function
} {
931 return [check_no_compiler_messages $
{function
}_available \
937 int main
() { $function
(); }
941 # Returns true iff
"fork" is available on the target system.
943 proc check_fork_available
{} {
944 return [check_function_available
"fork"]
947 # Returns true iff
"mkfifo" is available on the target system.
949 proc check_mkfifo_available
{} {
950 if {[istarget
*-*-cygwin
*]} {
951 # Cygwin has mkfifo
, but support is incomplete.
955 return [check_function_available
"mkfifo"]
958 # Returns true iff
"__cxa_atexit" is used on the target system.
960 proc check_cxa_atexit_available
{ } {
961 return [check_cached_effective_target cxa_atexit_available
{
962 if { [istarget
"hppa*-*-hpux10*"] } {
963 # HP
-UX
10 doesn
't have __cxa_atexit but subsequent test passes.
966 check_runtime_nocache cxa_atexit_available {
969 static unsigned int count;
986 Y() { f(); count = 2; }
995 int main() { return 0; }
1002 # Return 1 if we're generating
32-bit code using default options
, 0
1005 proc check_effective_target_ilp32
{ } {
1006 return [check_no_compiler_messages ilp32 object
{
1007 int dummy
[sizeof
(int) == 4
1008 && sizeof
(void
*) == 4
1009 && sizeof
(long
) == 4 ?
1 : -1];
1013 #
Return 1 if we
're generating 32-bit or larger integers using default
1014 # options, 0 otherwise.
1016 proc check_effective_target_int32plus { } {
1017 return [check_no_compiler_messages int32plus object {
1018 int dummy[sizeof (int) >= 4 ? 1 : -1];
1022 # Return 1 if we're generating
32-bit or larger pointers using default
1023 # options
, 0 otherwise.
1025 proc check_effective_target_ptr32plus
{ } {
1026 return [check_no_compiler_messages ptr32plus object
{
1027 int dummy
[sizeof
(void
*) >= 4 ?
1 : -1];
1031 #
Return 1 if we support
32-bit or larger array and structure sizes
1032 # using default options
, 0 otherwise.
1034 proc check_effective_target_size32plus
{ } {
1035 return [check_no_compiler_messages size32plus object
{
1040 # Returns
1 if we
're generating 16-bit or smaller integers with the
1041 # default options, 0 otherwise.
1043 proc check_effective_target_int16 { } {
1044 return [check_no_compiler_messages int16 object {
1045 int dummy[sizeof (int) < 4 ? 1 : -1];
1049 # Return 1 if we're generating
64-bit code using default options
, 0
1052 proc check_effective_target_lp64
{ } {
1053 return [check_no_compiler_messages lp64 object
{
1054 int dummy
[sizeof
(int) == 4
1055 && sizeof
(void
*) == 8
1056 && sizeof
(long
) == 8 ?
1 : -1];
1060 #
Return 1 if we
're generating 64-bit code using default llp64 options,
1063 proc check_effective_target_llp64 { } {
1064 return [check_no_compiler_messages llp64 object {
1065 int dummy[sizeof (int) == 4
1066 && sizeof (void *) == 8
1067 && sizeof (long long) == 8
1068 && sizeof (long) == 4 ? 1 : -1];
1072 # Return 1 if the target supports long double larger than double,
1075 proc check_effective_target_large_long_double { } {
1076 return [check_no_compiler_messages large_long_double object {
1077 int dummy[sizeof(long double) > sizeof(double) ? 1 : -1];
1081 # Return 1 if the target supports compiling fixed-point,
1084 proc check_effective_target_fixed_point { } {
1085 return [check_no_compiler_messages fixed_point object {
1086 _Sat _Fract x; _Sat _Accum y;
1090 # Return 1 if the target supports compiling decimal floating point,
1093 proc check_effective_target_dfp_nocache { } {
1094 verbose "check_effective_target_dfp_nocache: compiling source" 2
1095 set ret [check_no_compiler_messages_nocache dfp object {
1096 _Decimal32 x; _Decimal64 y; _Decimal128 z;
1098 verbose "check_effective_target_dfp_nocache: returning $ret" 2
1102 proc check_effective_target_dfprt_nocache { } {
1103 return [check_runtime_nocache dfprt {
1104 _Decimal32 x = 1.2df; _Decimal64 y = 2.3dd; _Decimal128 z;
1105 int main () { z = x + y; return 0; }
1109 # Return 1 if the target supports compiling Decimal Floating Point,
1112 # This won't change
for different subtargets so
cache the result.
1114 proc check_effective_target_dfp
{ } {
1115 return [check_cached_effective_target dfp
{
1116 check_effective_target_dfp_nocache
1120 #
Return 1 if the target supports linking and executing Decimal Floating
1121 # Point
, #
0 otherwise.
1123 # This won
't change for different subtargets so cache the result.
1125 proc check_effective_target_dfprt { } {
1126 return [check_cached_effective_target dfprt {
1127 check_effective_target_dfprt_nocache
1131 # Return 1 if the target needs a command line argument to enable a SIMD
1134 proc check_effective_target_vect_cmdline_needed { } {
1135 global et_vect_cmdline_needed_saved
1136 global et_vect_cmdline_needed_target_name
1138 if { ![info exists et_vect_cmdline_needed_target_name] } {
1139 set et_vect_cmdline_needed_target_name ""
1142 # If the target has changed since we set the cached value, clear it.
1143 set current_target [current_target_name]
1144 if { $current_target != $et_vect_cmdline_needed_target_name } {
1145 verbose "check_effective_target_vect_cmdline_needed: `$et_vect_cmdline_needed_target_name' `$current_target
'" 2
1146 set et_vect_cmdline_needed_target_name $current_target
1147 if { [info exists et_vect_cmdline_needed_saved] } {
1148 verbose "check_effective_target_vect_cmdline_needed: removing cached result" 2
1149 unset et_vect_cmdline_needed_saved
1153 if [info exists et_vect_cmdline_needed_saved] {
1154 verbose "check_effective_target_vect_cmdline_needed: using cached result" 2
1156 set et_vect_cmdline_needed_saved 1
1157 if { [istarget ia64-*-*]
1158 || (([istarget x86_64-*-*] || [istarget i?86-*-*])
1159 && [check_effective_target_lp64])
1160 || ([istarget powerpc*-*-*]
1161 && ([check_effective_target_powerpc_spe]
1162 || [check_effective_target_powerpc_altivec]))
1163 || [istarget spu-*-*]
1164 || ([istarget arm*-*-*] && [check_effective_target_arm_neon]) } {
1165 set et_vect_cmdline_needed_saved 0
1169 verbose "check_effective_target_vect_cmdline_needed: returning $et_vect_cmdline_needed_saved" 2
1170 return $et_vect_cmdline_needed_saved
1173 # Return 1 if the target supports hardware vectors of int, 0 otherwise.
1175 # This won't change
for different subtargets so
cache the result.
1177 proc check_effective_target_vect_int
{ } {
1178 global et_vect_int_saved
1180 if [info exists et_vect_int_saved
] {
1181 verbose
"check_effective_target_vect_int: using cached result" 2
1183 set et_vect_int_saved
0
1184 if { [istarget i?
86-*-*]
1185 ||
([istarget powerpc
*-*-*]
1186 && ![istarget powerpc
-*-linux
*paired
*])
1187 ||
[istarget spu
-*-*]
1188 ||
[istarget x86_64
-*-*]
1189 ||
[istarget sparc
*-*-*]
1190 ||
[istarget alpha
*-*-*]
1191 ||
[istarget ia64
-*-*]
1192 ||
[check_effective_target_arm32
] } {
1193 set et_vect_int_saved
1
1197 verbose
"check_effective_target_vect_int: returning $et_vect_int_saved" 2
1198 return $et_vect_int_saved
1201 #
Return 1 if the target supports
int->float conversion
1204 proc check_effective_target_vect_intfloat_cvt
{ } {
1205 global et_vect_intfloat_cvt_saved
1207 if [info exists et_vect_intfloat_cvt_saved
] {
1208 verbose
"check_effective_target_vect_intfloat_cvt: using cached result" 2
1210 set et_vect_intfloat_cvt_saved
0
1211 if { [istarget i?
86-*-*]
1212 ||
([istarget powerpc
*-*-*]
1213 && ![istarget powerpc
-*-linux
*paired
*])
1214 ||
[istarget x86_64
-*-*] } {
1215 set et_vect_intfloat_cvt_saved
1
1219 verbose
"check_effective_target_vect_intfloat_cvt: returning $et_vect_intfloat_cvt_saved" 2
1220 return $et_vect_intfloat_cvt_saved
1224 #
Return 1 if the target supports float
->int conversion
1227 proc check_effective_target_vect_floatint_cvt
{ } {
1228 global et_vect_floatint_cvt_saved
1230 if [info exists et_vect_floatint_cvt_saved
] {
1231 verbose
"check_effective_target_vect_floatint_cvt: using cached result" 2
1233 set et_vect_floatint_cvt_saved
0
1234 if { [istarget i?
86-*-*]
1235 ||
([istarget powerpc
*-*-*]
1236 && ![istarget powerpc
-*-linux
*paired
*])
1237 ||
[istarget x86_64
-*-*] } {
1238 set et_vect_floatint_cvt_saved
1
1242 verbose
"check_effective_target_vect_floatint_cvt: returning $et_vect_floatint_cvt_saved" 2
1243 return $et_vect_floatint_cvt_saved
1246 #
Return 1 is this is an arm target using
32-bit instructions
1247 proc check_effective_target_arm32
{ } {
1248 return [check_no_compiler_messages arm32 assembly
{
1249 #
if !defined
(__arm__
) ||
(defined
(__thumb__
) && !defined
(__thumb2__
))
1255 #
Return 1 if this is an ARM target supporting
-mfpu
=vfp
1256 #
-mfloat
-abi
=softfp. Some multilibs may be incompatible with these
1259 proc check_effective_target_arm_vfp_ok
{ } {
1260 if { [check_effective_target_arm32
] } {
1261 return [check_no_compiler_messages arm_vfp_ok object
{
1263 } "-mfpu=vfp -mfloat-abi=softfp"]
1269 #
Return 1 if this is an ARM target supporting
-mfpu
=neon
1270 #
-mfloat
-abi
=softfp. Some multilibs may be incompatible with these
1273 proc check_effective_target_arm_neon_ok
{ } {
1274 if { [check_effective_target_arm32
] } {
1275 return [check_no_compiler_messages arm_neon_ok object
{
1277 } "-mfpu=neon -mfloat-abi=softfp"]
1283 #
Return 1 is this is an ARM target where
-mthumb causes Thumb
-1 to be
1286 proc check_effective_target_arm_thumb1_ok
{ } {
1287 return [check_no_compiler_messages arm_thumb1_ok assembly
{
1288 #
if !defined
(__arm__
) ||
!defined
(__thumb__
) || defined
(__thumb2__
)
1294 #
Return 1 if the target supports executing NEON instructions
, 0
1295 # otherwise.
Cache the result.
1297 proc check_effective_target_arm_neon_hw
{ } {
1298 return [check_runtime arm_neon_hw_available
{
1302 long long a
= 0, b
= 1;
1303 asm
("vorr %P0, %P1, %P2"
1305 : "0" (a), "w" (b));
1308 } "-mfpu=neon -mfloat-abi=softfp"]
1311 #
Return 1 if this is a ARM target with NEON enabled.
1313 proc check_effective_target_arm_neon
{ } {
1314 if { [check_effective_target_arm32
] } {
1315 return [check_no_compiler_messages arm_neon object
{
1316 #ifndef __ARM_NEON__
1327 #
Return 1 if this a Loongson
-2E or
-2F target using an ABI that supports
1328 # the Loongson vector modes.
1330 proc check_effective_target_mips_loongson
{ } {
1331 return [check_no_compiler_messages loongson assembly
{
1332 #
if !defined
(__mips_loongson_vector_rev
)
1338 #
Return 1 if this is a PowerPC target with floating
-point registers.
1340 proc check_effective_target_powerpc_fprs
{ } {
1341 if { [istarget powerpc
*-*-*]
1342 ||
[istarget rs6000
-*-*] } {
1343 return [check_no_compiler_messages powerpc_fprs object
{
1355 #
Return 1 if this is a PowerPC target with hardware double
-precision
1358 proc check_effective_target_powerpc_hard_double
{ } {
1359 if { [istarget powerpc
*-*-*]
1360 ||
[istarget rs6000
-*-*] } {
1361 return [check_no_compiler_messages powerpc_hard_double object
{
1373 #
Return 1 if this is a PowerPC target supporting
-maltivec.
1375 proc check_effective_target_powerpc_altivec_ok
{ } {
1376 if { ([istarget powerpc
*-*-*]
1377 && ![istarget powerpc
-*-linux
*paired
*])
1378 ||
[istarget rs6000
-*-*] } {
1379 # AltiVec is not supported
on AIX before
5.3.
1380 if { [istarget powerpc
*-*-aix4
*]
1381 ||
[istarget powerpc
*-*-aix5.1
*]
1382 ||
[istarget powerpc
*-*-aix5.2
*] } {
1385 return [check_no_compiler_messages powerpc_altivec_ok object
{
1393 #
Return 1 if this is a PowerPC target supporting
-mcpu
=cell.
1395 proc check_effective_target_powerpc_ppu_ok
{ } {
1396 if [check_effective_target_powerpc_altivec_ok
] {
1397 return [check_no_compiler_messages cell_asm_available object
{
1400 asm volatile
("lvlx v0,v0,v0");
1402 asm volatile
("lvlx 0,0,0");
1412 #
Return 1 if this is a PowerPC target that supports SPU.
1414 proc check_effective_target_powerpc_spu
{ } {
1415 if [istarget powerpc
*-*-linux
*] {
1416 return [check_effective_target_powerpc_altivec_ok
]
1422 #
Return 1 if this is a PowerPC target with SPE enabled.
1424 proc check_effective_target_powerpc_spe
{ } {
1425 if { [istarget powerpc
*-*-*] } {
1426 return [check_no_compiler_messages powerpc_spe object
{
1438 #
Return 1 if this is a PowerPC target with Altivec enabled.
1440 proc check_effective_target_powerpc_altivec
{ } {
1441 if { [istarget powerpc
*-*-*] } {
1442 return [check_no_compiler_messages powerpc_altivec object
{
1454 #
Return 1 if this is a SPU target with a toolchain that
1455 # supports automatic overlay generation.
1457 proc check_effective_target_spu_auto_overlay
{ } {
1458 if { [istarget spu
*-*-elf
*] } {
1459 return [check_no_compiler_messages spu_auto_overlay executable
{
1461 } "-Wl,--auto-overlay" ]
1467 # The VxWorks SPARC simulator accepts only EM_SPARC executables and
1468 # chokes
on EM_SPARC32PLUS or EM_SPARCV9 executables.
Return 1 if the
1469 # test environment appears to run executables
on such a simulator.
1471 proc check_effective_target_ultrasparc_hw
{ } {
1472 return [check_runtime ultrasparc_hw
{
1473 int main
() { return 0; }
1474 } "-mcpu=ultrasparc"]
1477 #
Return 1 if the target supports hardware vector shift operation.
1479 proc check_effective_target_vect_shift
{ } {
1480 global et_vect_shift_saved
1482 if [info exists et_vect_shift_saved
] {
1483 verbose
"check_effective_target_vect_shift: using cached result" 2
1485 set et_vect_shift_saved
0
1486 if { ([istarget powerpc
*-*-*]
1487 && ![istarget powerpc
-*-linux
*paired
*])
1488 ||
[istarget ia64
-*-*]
1489 ||
[istarget i?
86-*-*]
1490 ||
[istarget x86_64
-*-*]
1491 ||
[check_effective_target_arm32
] } {
1492 set et_vect_shift_saved
1
1496 verbose
"check_effective_target_vect_shift: returning $et_vect_shift_saved" 2
1497 return $et_vect_shift_saved
1500 #
Return 1 if the target supports hardware vectors of long
, 0 otherwise.
1502 # This can change
for different subtargets so
do not
cache the result.
1504 proc check_effective_target_vect_long
{ } {
1505 if { [istarget i?
86-*-*]
1506 ||
(([istarget powerpc
*-*-*]
1507 && ![istarget powerpc
-*-linux
*paired
*])
1508 && [check_effective_target_ilp32
])
1509 ||
[istarget x86_64
-*-*]
1510 ||
[check_effective_target_arm32
]
1511 ||
([istarget sparc
*-*-*] && [check_effective_target_ilp32
]) } {
1517 verbose
"check_effective_target_vect_long: returning $answer" 2
1521 #
Return 1 if the target supports hardware vectors of float
, 0 otherwise.
1523 # This won
't change for different subtargets so cache the result.
1525 proc check_effective_target_vect_float { } {
1526 global et_vect_float_saved
1528 if [info exists et_vect_float_saved] {
1529 verbose "check_effective_target_vect_float: using cached result" 2
1531 set et_vect_float_saved 0
1532 if { [istarget i?86-*-*]
1533 || [istarget powerpc*-*-*]
1534 || [istarget spu-*-*]
1535 || [istarget mipsisa64*-*-*]
1536 || [istarget x86_64-*-*]
1537 || [istarget ia64-*-*]
1538 || [check_effective_target_arm32] } {
1539 set et_vect_float_saved 1
1543 verbose "check_effective_target_vect_float: returning $et_vect_float_saved" 2
1544 return $et_vect_float_saved
1547 # Return 1 if the target supports hardware vectors of double, 0 otherwise.
1549 # This won't change
for different subtargets so
cache the result.
1551 proc check_effective_target_vect_double
{ } {
1552 global et_vect_double_saved
1554 if [info exists et_vect_double_saved
] {
1555 verbose
"check_effective_target_vect_double: using cached result" 2
1557 set et_vect_double_saved
0
1558 if { [istarget i?
86-*-*]
1559 ||
[istarget x86_64
-*-*]
1560 ||
[istarget spu
-*-*] } {
1561 set et_vect_double_saved
1
1565 verbose
"check_effective_target_vect_double: returning $et_vect_double_saved" 2
1566 return $et_vect_double_saved
1569 #
Return 1 if the target supports hardware vectors of long long
, 0 otherwise.
1571 # This won
't change for different subtargets so cache the result.
1573 proc check_effective_target_vect_long_long { } {
1574 global et_vect_long_long_saved
1576 if [info exists et_vect_long_long_saved] {
1577 verbose "check_effective_target_vect_long_long: using cached result" 2
1579 set et_vect_long_long_saved 0
1580 if { [istarget i?86-*-*]
1581 || [istarget x86_64-*-*] } {
1582 set et_vect_long_long_saved 1
1586 verbose "check_effective_target_vect_long_long: returning $et_vect_long_long_saved" 2
1587 return $et_vect_long_long_saved
1591 # Return 1 if the target plus current options does not support a vector
1592 # max instruction on "int", 0 otherwise.
1594 # This won't change
for different subtargets so
cache the result.
1596 proc check_effective_target_vect_no_int_max
{ } {
1597 global et_vect_no_int_max_saved
1599 if [info exists et_vect_no_int_max_saved
] {
1600 verbose
"check_effective_target_vect_no_int_max: using cached result" 2
1602 set et_vect_no_int_max_saved
0
1603 if { [istarget sparc
*-*-*]
1604 ||
[istarget spu
-*-*]
1605 ||
[istarget alpha
*-*-*] } {
1606 set et_vect_no_int_max_saved
1
1609 verbose
"check_effective_target_vect_no_int_max: returning $et_vect_no_int_max_saved" 2
1610 return $et_vect_no_int_max_saved
1613 #
Return 1 if the target plus current options does not support a vector
1614 # add instruction
on "int", 0 otherwise.
1616 # This won
't change for different subtargets so cache the result.
1618 proc check_effective_target_vect_no_int_add { } {
1619 global et_vect_no_int_add_saved
1621 if [info exists et_vect_no_int_add_saved] {
1622 verbose "check_effective_target_vect_no_int_add: using cached result" 2
1624 set et_vect_no_int_add_saved 0
1625 # Alpha only supports vector add on V8QI and V4HI.
1626 if { [istarget alpha*-*-*] } {
1627 set et_vect_no_int_add_saved 1
1630 verbose "check_effective_target_vect_no_int_add: returning $et_vect_no_int_add_saved" 2
1631 return $et_vect_no_int_add_saved
1634 # Return 1 if the target plus current options does not support vector
1635 # bitwise instructions, 0 otherwise.
1637 # This won't change
for different subtargets so
cache the result.
1639 proc check_effective_target_vect_no_bitwise
{ } {
1640 global et_vect_no_bitwise_saved
1642 if [info exists et_vect_no_bitwise_saved
] {
1643 verbose
"check_effective_target_vect_no_bitwise: using cached result" 2
1645 set et_vect_no_bitwise_saved
0
1647 verbose
"check_effective_target_vect_no_bitwise: returning $et_vect_no_bitwise_saved" 2
1648 return $et_vect_no_bitwise_saved
1651 #
Return 1 if the target plus current options supports vector permutation
,
1654 # This won
't change for different subtargets so cache the result.
1656 proc check_effective_target_vect_perm { } {
1659 if [info exists et_vect_perm_saved] {
1660 verbose "check_effective_target_vect_perm: using cached result" 2
1662 set et_vect_perm_saved 0
1663 if { [istarget powerpc*-*-*]
1664 || [istarget spu-*-*] } {
1665 set et_vect_perm_saved 1
1668 verbose "check_effective_target_vect_perm: returning $et_vect_perm_saved" 2
1669 return $et_vect_perm_saved
1673 # Return 1 if the target plus current options supports a vector
1674 # widening summation of *short* args into *int* result, 0 otherwise.
1675 # A target can also support this widening summation if it can support
1676 # promotion (unpacking) from shorts to ints.
1678 # This won't change
for different subtargets so
cache the result.
1680 proc check_effective_target_vect_widen_sum_hi_to_si
{ } {
1681 global et_vect_widen_sum_hi_to_si
1683 if [info exists et_vect_widen_sum_hi_to_si_saved
] {
1684 verbose
"check_effective_target_vect_widen_sum_hi_to_si: using cached result" 2
1686 set et_vect_widen_sum_hi_to_si_saved
[check_effective_target_vect_unpack
]
1687 if { [istarget powerpc
*-*-*]
1688 ||
[istarget ia64
-*-*] } {
1689 set et_vect_widen_sum_hi_to_si_saved
1
1692 verbose
"check_effective_target_vect_widen_sum_hi_to_si: returning $et_vect_widen_sum_hi_to_si_saved" 2
1693 return $et_vect_widen_sum_hi_to_si_saved
1696 #
Return 1 if the target plus current options supports a vector
1697 # widening summation of
*char
* args into
*short
* result
, 0 otherwise.
1698 # A target can also support this widening summation
if it can support
1699 # promotion
(unpacking
) from chars to shorts.
1701 # This won
't change for different subtargets so cache the result.
1703 proc check_effective_target_vect_widen_sum_qi_to_hi { } {
1704 global et_vect_widen_sum_qi_to_hi
1706 if [info exists et_vect_widen_sum_qi_to_hi_saved] {
1707 verbose "check_effective_target_vect_widen_sum_qi_to_hi: using cached result" 2
1709 set et_vect_widen_sum_qi_to_hi_saved 0
1710 if { [check_effective_target_vect_unpack]
1711 || [istarget ia64-*-*] } {
1712 set et_vect_widen_sum_qi_to_hi_saved 1
1715 verbose "check_effective_target_vect_widen_sum_qi_to_hi: returning $et_vect_widen_sum_qi_to_hi_saved" 2
1716 return $et_vect_widen_sum_qi_to_hi_saved
1719 # Return 1 if the target plus current options supports a vector
1720 # widening summation of *char* args into *int* result, 0 otherwise.
1722 # This won't change
for different subtargets so
cache the result.
1724 proc check_effective_target_vect_widen_sum_qi_to_si
{ } {
1725 global et_vect_widen_sum_qi_to_si
1727 if [info exists et_vect_widen_sum_qi_to_si_saved
] {
1728 verbose
"check_effective_target_vect_widen_sum_qi_to_si: using cached result" 2
1730 set et_vect_widen_sum_qi_to_si_saved
0
1731 if { [istarget powerpc
*-*-*] } {
1732 set et_vect_widen_sum_qi_to_si_saved
1
1735 verbose
"check_effective_target_vect_widen_sum_qi_to_si: returning $et_vect_widen_sum_qi_to_si_saved" 2
1736 return $et_vect_widen_sum_qi_to_si_saved
1739 #
Return 1 if the target plus current options supports a vector
1740 # widening multiplication of
*char
* args into
*short
* result
, 0 otherwise.
1741 # A target can also support this widening multplication
if it can support
1742 # promotion
(unpacking
) from chars to shorts
, and vect_short_mult
(non
-widening
1743 # multiplication of shorts
).
1745 # This won
't change for different subtargets so cache the result.
1748 proc check_effective_target_vect_widen_mult_qi_to_hi { } {
1749 global et_vect_widen_mult_qi_to_hi
1751 if [info exists et_vect_widen_mult_qi_to_hi_saved] {
1752 verbose "check_effective_target_vect_widen_mult_qi_to_hi: using cached result" 2
1754 if { [check_effective_target_vect_unpack]
1755 && [check_effective_target_vect_short_mult] } {
1756 set et_vect_widen_mult_qi_to_hi_saved 1
1758 set et_vect_widen_mult_qi_to_hi_saved 0
1760 if { [istarget powerpc*-*-*] } {
1761 set et_vect_widen_mult_qi_to_hi_saved 1
1764 verbose "check_effective_target_vect_widen_mult_qi_to_hi: returning $et_vect_widen_mult_qi_to_hi_saved" 2
1765 return $et_vect_widen_mult_qi_to_hi_saved
1768 # Return 1 if the target plus current options supports a vector
1769 # widening multiplication of *short* args into *int* result, 0 otherwise.
1770 # A target can also support this widening multplication if it can support
1771 # promotion (unpacking) from shorts to ints, and vect_int_mult (non-widening
1772 # multiplication of ints).
1774 # This won't change
for different subtargets so
cache the result.
1777 proc check_effective_target_vect_widen_mult_hi_to_si
{ } {
1778 global et_vect_widen_mult_hi_to_si
1780 if [info exists et_vect_widen_mult_hi_to_si_saved
] {
1781 verbose
"check_effective_target_vect_widen_mult_hi_to_si: using cached result" 2
1783 if { [check_effective_target_vect_unpack
]
1784 && [check_effective_target_vect_int_mult
] } {
1785 set et_vect_widen_mult_hi_to_si_saved
1
1787 set et_vect_widen_mult_hi_to_si_saved
0
1789 if { [istarget powerpc
*-*-*]
1790 ||
[istarget spu
-*-*]
1791 ||
[istarget i?
86-*-*]
1792 ||
[istarget x86_64
-*-*] } {
1793 set et_vect_widen_mult_hi_to_si_saved
1
1796 verbose
"check_effective_target_vect_widen_mult_hi_to_si: returning $et_vect_widen_mult_hi_to_si_saved" 2
1797 return $et_vect_widen_mult_hi_to_si_saved
1800 #
Return 1 if the target plus current options supports a vector
1801 # dot
-product of signed chars
, 0 otherwise.
1803 # This won
't change for different subtargets so cache the result.
1805 proc check_effective_target_vect_sdot_qi { } {
1806 global et_vect_sdot_qi
1808 if [info exists et_vect_sdot_qi_saved] {
1809 verbose "check_effective_target_vect_sdot_qi: using cached result" 2
1811 set et_vect_sdot_qi_saved 0
1813 verbose "check_effective_target_vect_sdot_qi: returning $et_vect_sdot_qi_saved" 2
1814 return $et_vect_sdot_qi_saved
1817 # Return 1 if the target plus current options supports a vector
1818 # dot-product of unsigned chars, 0 otherwise.
1820 # This won't change
for different subtargets so
cache the result.
1822 proc check_effective_target_vect_udot_qi
{ } {
1823 global et_vect_udot_qi
1825 if [info exists et_vect_udot_qi_saved
] {
1826 verbose
"check_effective_target_vect_udot_qi: using cached result" 2
1828 set et_vect_udot_qi_saved
0
1829 if { [istarget powerpc
*-*-*] } {
1830 set et_vect_udot_qi_saved
1
1833 verbose
"check_effective_target_vect_udot_qi: returning $et_vect_udot_qi_saved" 2
1834 return $et_vect_udot_qi_saved
1837 #
Return 1 if the target plus current options supports a vector
1838 # dot
-product of signed shorts
, 0 otherwise.
1840 # This won
't change for different subtargets so cache the result.
1842 proc check_effective_target_vect_sdot_hi { } {
1843 global et_vect_sdot_hi
1845 if [info exists et_vect_sdot_hi_saved] {
1846 verbose "check_effective_target_vect_sdot_hi: using cached result" 2
1848 set et_vect_sdot_hi_saved 0
1849 if { ([istarget powerpc*-*-*] && ![istarget powerpc-*-linux*paired*])
1850 || [istarget i?86-*-*]
1851 || [istarget x86_64-*-*] } {
1852 set et_vect_sdot_hi_saved 1
1855 verbose "check_effective_target_vect_sdot_hi: returning $et_vect_sdot_hi_saved" 2
1856 return $et_vect_sdot_hi_saved
1859 # Return 1 if the target plus current options supports a vector
1860 # dot-product of unsigned shorts, 0 otherwise.
1862 # This won't change
for different subtargets so
cache the result.
1864 proc check_effective_target_vect_udot_hi
{ } {
1865 global et_vect_udot_hi
1867 if [info exists et_vect_udot_hi_saved
] {
1868 verbose
"check_effective_target_vect_udot_hi: using cached result" 2
1870 set et_vect_udot_hi_saved
0
1871 if { ([istarget powerpc
*-*-*] && ![istarget powerpc
-*-linux
*paired
*]) } {
1872 set et_vect_udot_hi_saved
1
1875 verbose
"check_effective_target_vect_udot_hi: returning $et_vect_udot_hi_saved" 2
1876 return $et_vect_udot_hi_saved
1880 #
Return 1 if the target plus current options supports a vector
1881 # demotion
(packing
) of shorts
(to chars
) and ints
(to shorts
)
1882 # using modulo arithmetic
, 0 otherwise.
1884 # This won
't change for different subtargets so cache the result.
1886 proc check_effective_target_vect_pack_trunc { } {
1887 global et_vect_pack_trunc
1889 if [info exists et_vect_pack_trunc_saved] {
1890 verbose "check_effective_target_vect_pack_trunc: using cached result" 2
1892 set et_vect_pack_trunc_saved 0
1893 if { ([istarget powerpc*-*-*] && ![istarget powerpc-*-linux*paired*])
1894 || [istarget i?86-*-*]
1895 || [istarget x86_64-*-*]
1896 || [istarget spu-*-*] } {
1897 set et_vect_pack_trunc_saved 1
1900 verbose "check_effective_target_vect_pack_trunc: returning $et_vect_pack_trunc_saved" 2
1901 return $et_vect_pack_trunc_saved
1904 # Return 1 if the target plus current options supports a vector
1905 # promotion (unpacking) of chars (to shorts) and shorts (to ints), 0 otherwise.
1907 # This won't change
for different subtargets so
cache the result.
1909 proc check_effective_target_vect_unpack
{ } {
1910 global et_vect_unpack
1912 if [info exists et_vect_unpack_saved
] {
1913 verbose
"check_effective_target_vect_unpack: using cached result" 2
1915 set et_vect_unpack_saved
0
1916 if { ([istarget powerpc
*-*-*] && ![istarget powerpc
-*paired
*])
1917 ||
[istarget i?
86-*-*]
1918 ||
[istarget x86_64
-*-*]
1919 ||
[istarget spu
-*-*] } {
1920 set et_vect_unpack_saved
1
1923 verbose
"check_effective_target_vect_unpack: returning $et_vect_unpack_saved" 2
1924 return $et_vect_unpack_saved
1927 #
Return 1 if the target plus current options does not guarantee
1928 # that its STACK_BOUNDARY is
>= the reguired vector alignment.
1930 # This won
't change for different subtargets so cache the result.
1932 proc check_effective_target_unaligned_stack { } {
1933 global et_unaligned_stack_saved
1935 if [info exists et_unaligned_stack_saved] {
1936 verbose "check_effective_target_unaligned_stack: using cached result" 2
1938 set et_unaligned_stack_saved 0
1940 verbose "check_effective_target_unaligned_stack: returning $et_unaligned_stack_saved" 2
1941 return $et_unaligned_stack_saved
1944 # Return 1 if the target plus current options does not support a vector
1945 # alignment mechanism, 0 otherwise.
1947 # This won't change
for different subtargets so
cache the result.
1949 proc check_effective_target_vect_no_align
{ } {
1950 global et_vect_no_align_saved
1952 if [info exists et_vect_no_align_saved
] {
1953 verbose
"check_effective_target_vect_no_align: using cached result" 2
1955 set et_vect_no_align_saved
0
1956 if { [istarget mipsisa64
*-*-*]
1957 ||
[istarget sparc
*-*-*]
1958 ||
[istarget ia64
-*-*]
1959 ||
[check_effective_target_arm32
] } {
1960 set et_vect_no_align_saved
1
1963 verbose
"check_effective_target_vect_no_align: returning $et_vect_no_align_saved" 2
1964 return $et_vect_no_align_saved
1967 #
Return 1 if arrays are aligned to the vector alignment
1968 # boundary
, 0 otherwise.
1970 # This won
't change for different subtargets so cache the result.
1972 proc check_effective_target_vect_aligned_arrays { } {
1973 global et_vect_aligned_arrays
1975 if [info exists et_vect_aligned_arrays_saved] {
1976 verbose "check_effective_target_vect_aligned_arrays: using cached result" 2
1978 set et_vect_aligned_arrays_saved 0
1979 if { (([istarget x86_64-*-*]
1980 || [istarget i?86-*-*]) && [is-effective-target lp64])
1981 || [istarget spu-*-*] } {
1982 set et_vect_aligned_arrays_saved 1
1985 verbose "check_effective_target_vect_aligned_arrays: returning $et_vect_aligned_arrays_saved" 2
1986 return $et_vect_aligned_arrays_saved
1989 # Return 1 if types of size 32 bit or less are naturally aligned
1990 # (aligned to their type-size), 0 otherwise.
1992 # This won't change
for different subtargets so
cache the result.
1994 proc check_effective_target_natural_alignment_32
{ } {
1995 global et_natural_alignment_32
1997 if [info exists et_natural_alignment_32_saved
] {
1998 verbose
"check_effective_target_natural_alignment_32: using cached result" 2
2000 # FIXME
: 32bit powerpc
: guaranteed only
if MASK_ALIGN_NATURAL
/POWER.
2001 set et_natural_alignment_32_saved
1
2002 if { ([istarget
*-*-darwin
*] && [is
-effective
-target lp64
]) } {
2003 set et_natural_alignment_32_saved
0
2006 verbose
"check_effective_target_natural_alignment_32: returning $et_natural_alignment_32_saved" 2
2007 return $et_natural_alignment_32_saved
2010 #
Return 1 if types of size
64 bit or less are naturally aligned
(aligned to their
2011 # type
-size
), 0 otherwise.
2013 # This won
't change for different subtargets so cache the result.
2015 proc check_effective_target_natural_alignment_64 { } {
2016 global et_natural_alignment_64
2018 if [info exists et_natural_alignment_64_saved] {
2019 verbose "check_effective_target_natural_alignment_64: using cached result" 2
2021 set et_natural_alignment_64_saved 0
2022 if { ([is-effective-target lp64] && ![istarget *-*-darwin*])
2023 || [istarget spu-*-*] } {
2024 set et_natural_alignment_64_saved 1
2027 verbose "check_effective_target_natural_alignment_64: returning $et_natural_alignment_64_saved" 2
2028 return $et_natural_alignment_64_saved
2031 # Return 1 if vector alignment (for types of size 32 bit or less) is reachable, 0 otherwise.
2033 # This won't change
for different subtargets so
cache the result.
2035 proc check_effective_target_vector_alignment_reachable
{ } {
2036 global et_vector_alignment_reachable
2038 if [info exists et_vector_alignment_reachable_saved
] {
2039 verbose
"check_effective_target_vector_alignment_reachable: using cached result" 2
2041 if { [check_effective_target_vect_aligned_arrays
]
2042 ||
[check_effective_target_natural_alignment_32
] } {
2043 set et_vector_alignment_reachable_saved
1
2045 set et_vector_alignment_reachable_saved
0
2048 verbose
"check_effective_target_vector_alignment_reachable: returning $et_vector_alignment_reachable_saved" 2
2049 return $et_vector_alignment_reachable_saved
2052 #
Return 1 if vector alignment
for 64 bit is reachable
, 0 otherwise.
2054 # This won
't change for different subtargets so cache the result.
2056 proc check_effective_target_vector_alignment_reachable_for_64bit { } {
2057 global et_vector_alignment_reachable_for_64bit
2059 if [info exists et_vector_alignment_reachable_for_64bit_saved] {
2060 verbose "check_effective_target_vector_alignment_reachable_for_64bit: using cached result" 2
2062 if { [check_effective_target_vect_aligned_arrays]
2063 || [check_effective_target_natural_alignment_64] } {
2064 set et_vector_alignment_reachable_for_64bit_saved 1
2066 set et_vector_alignment_reachable_for_64bit_saved 0
2069 verbose "check_effective_target_vector_alignment_reachable_for_64bit: returning $et_vector_alignment_reachable_for_64bit_saved" 2
2070 return $et_vector_alignment_reachable_for_64bit_saved
2073 # Return 1 if the target supports vector conditional operations, 0 otherwise.
2075 proc check_effective_target_vect_condition { } {
2076 global et_vect_cond_saved
2078 if [info exists et_vect_cond_saved] {
2079 verbose "check_effective_target_vect_cond: using cached result" 2
2081 set et_vect_cond_saved 0
2082 if { [istarget powerpc*-*-*]
2083 || [istarget ia64-*-*]
2084 || [istarget i?86-*-*]
2085 || [istarget spu-*-*]
2086 || [istarget x86_64-*-*] } {
2087 set et_vect_cond_saved 1
2091 verbose "check_effective_target_vect_cond: returning $et_vect_cond_saved" 2
2092 return $et_vect_cond_saved
2095 # Return 1 if the target supports vector char multiplication, 0 otherwise.
2097 proc check_effective_target_vect_char_mult { } {
2098 global et_vect_char_mult_saved
2100 if [info exists et_vect_char_mult_saved] {
2101 verbose "check_effective_target_vect_char_mult: using cached result" 2
2103 set et_vect_char_mult_saved 0
2104 if { [istarget ia64-*-*]
2105 || [istarget i?86-*-*]
2106 || [istarget x86_64-*-*] } {
2107 set et_vect_char_mult_saved 1
2111 verbose "check_effective_target_vect_char_mult: returning $et_vect_char_mult_saved" 2
2112 return $et_vect_char_mult_saved
2115 # Return 1 if the target supports vector short multiplication, 0 otherwise.
2117 proc check_effective_target_vect_short_mult { } {
2118 global et_vect_short_mult_saved
2120 if [info exists et_vect_short_mult_saved] {
2121 verbose "check_effective_target_vect_short_mult: using cached result" 2
2123 set et_vect_short_mult_saved 0
2124 if { [istarget ia64-*-*]
2125 || [istarget spu-*-*]
2126 || [istarget i?86-*-*]
2127 || [istarget x86_64-*-*]
2128 || [istarget powerpc*-*-*] } {
2129 set et_vect_short_mult_saved 1
2133 verbose "check_effective_target_vect_short_mult: returning $et_vect_short_mult_saved" 2
2134 return $et_vect_short_mult_saved
2137 # Return 1 if the target supports vector int multiplication, 0 otherwise.
2139 proc check_effective_target_vect_int_mult { } {
2140 global et_vect_int_mult_saved
2142 if [info exists et_vect_int_mult_saved] {
2143 verbose "check_effective_target_vect_int_mult: using cached result" 2
2145 set et_vect_int_mult_saved 0
2146 if { ([istarget powerpc*-*-*] && ![istarget powerpc-*-linux*paired*])
2147 || [istarget spu-*-*]
2148 || [istarget i?86-*-*]
2149 || [istarget x86_64-*-*]
2150 || [check_effective_target_arm32] } {
2151 set et_vect_int_mult_saved 1
2155 verbose "check_effective_target_vect_int_mult: returning $et_vect_int_mult_saved" 2
2156 return $et_vect_int_mult_saved
2159 # Return 1 if the target supports vector even/odd elements extraction, 0 otherwise.
2161 proc check_effective_target_vect_extract_even_odd { } {
2162 global et_vect_extract_even_odd_saved
2164 if [info exists et_vect_extract_even_odd_saved] {
2165 verbose "check_effective_target_vect_extract_even_odd: using cached result" 2
2167 set et_vect_extract_even_odd_saved 0
2168 if { [istarget powerpc*-*-*]
2169 || [istarget spu-*-*] } {
2170 set et_vect_extract_even_odd_saved 1
2174 verbose "check_effective_target_vect_extract_even_odd: returning $et_vect_extract_even_odd_saved" 2
2175 return $et_vect_extract_even_odd_saved
2178 # Return 1 if the target supports vector even/odd elements extraction of
2179 # vectors with SImode elements or larger, 0 otherwise.
2181 proc check_effective_target_vect_extract_even_odd_wide { } {
2182 global et_vect_extract_even_odd_wide_saved
2184 if [info exists et_vect_extract_even_odd_wide_saved] {
2185 verbose "check_effective_target_vect_extract_even_odd_wide: using cached result" 2
2187 set et_vect_extract_even_odd_wide_saved 0
2188 if { [istarget powerpc*-*-*]
2189 || [istarget i?86-*-*]
2190 || [istarget x86_64-*-*]
2191 || [istarget spu-*-*] } {
2192 set et_vect_extract_even_odd_wide_saved 1
2196 verbose "check_effective_target_vect_extract_even_wide_odd: returning $et_vect_extract_even_odd_wide_saved" 2
2197 return $et_vect_extract_even_odd_wide_saved
2200 # Return 1 if the target supports vector interleaving, 0 otherwise.
2202 proc check_effective_target_vect_interleave { } {
2203 global et_vect_interleave_saved
2205 if [info exists et_vect_interleave_saved] {
2206 verbose "check_effective_target_vect_interleave: using cached result" 2
2208 set et_vect_interleave_saved 0
2209 if { [istarget powerpc*-*-*]
2210 || [istarget i?86-*-*]
2211 || [istarget x86_64-*-*]
2212 || [istarget spu-*-*] } {
2213 set et_vect_interleave_saved 1
2217 verbose "check_effective_target_vect_interleave: returning $et_vect_interleave_saved" 2
2218 return $et_vect_interleave_saved
2221 # Return 1 if the target supports vector interleaving and extract even/odd, 0 otherwise.
2222 proc check_effective_target_vect_strided { } {
2223 global et_vect_strided_saved
2225 if [info exists et_vect_strided_saved] {
2226 verbose "check_effective_target_vect_strided: using cached result" 2
2228 set et_vect_strided_saved 0
2229 if { [check_effective_target_vect_interleave]
2230 && [check_effective_target_vect_extract_even_odd] } {
2231 set et_vect_strided_saved 1
2235 verbose "check_effective_target_vect_strided: returning $et_vect_strided_saved" 2
2236 return $et_vect_strided_saved
2239 # Return 1 if the target supports vector interleaving and extract even/odd
2240 # for wide element types, 0 otherwise.
2241 proc check_effective_target_vect_strided_wide { } {
2242 global et_vect_strided_wide_saved
2244 if [info exists et_vect_strided_wide_saved] {
2245 verbose "check_effective_target_vect_strided_wide: using cached result" 2
2247 set et_vect_strided_wide_saved 0
2248 if { [check_effective_target_vect_interleave]
2249 && [check_effective_target_vect_extract_even_odd_wide] } {
2250 set et_vect_strided_wide_saved 1
2254 verbose "check_effective_target_vect_strided_wide: returning $et_vect_strided_wide_saved" 2
2255 return $et_vect_strided_wide_saved
2258 # Return 1 if the target supports section-anchors
2260 proc check_effective_target_section_anchors { } {
2261 global et_section_anchors_saved
2263 if [info exists et_section_anchors_saved] {
2264 verbose "check_effective_target_section_anchors: using cached result" 2
2266 set et_section_anchors_saved 0
2267 if { [istarget powerpc*-*-*] } {
2268 set et_section_anchors_saved 1
2272 verbose "check_effective_target_section_anchors: returning $et_section_anchors_saved" 2
2273 return $et_section_anchors_saved
2276 # Return 1 if the target supports atomic operations on "int" and "long".
2278 proc check_effective_target_sync_int_long { } {
2279 global et_sync_int_long_saved
2281 if [info exists et_sync_int_long_saved] {
2282 verbose "check_effective_target_sync_int_long: using cached result" 2
2284 set et_sync_int_long_saved 0
2285 # This is intentionally powerpc but not rs6000, rs6000 doesn't have the
2286 #
load-reserved/store
-conditional instructions.
2287 if { [istarget ia64
-*-*]
2288 ||
[istarget i?
86-*-*]
2289 ||
[istarget x86_64
-*-*]
2290 ||
[istarget alpha
*-*-*]
2291 ||
[istarget s390
*-*-*]
2292 ||
[istarget powerpc
*-*-*]
2293 ||
[istarget sparc64
-*-*]
2294 ||
[istarget sparcv9
-*-*]
2295 ||
[istarget mips
*-*-*] } {
2296 set et_sync_int_long_saved
1
2300 verbose
"check_effective_target_sync_int_long: returning $et_sync_int_long_saved" 2
2301 return $et_sync_int_long_saved
2304 #
Return 1 if the target supports atomic operations
on "char" and "short".
2306 proc check_effective_target_sync_char_short
{ } {
2307 global et_sync_char_short_saved
2309 if [info exists et_sync_char_short_saved
] {
2310 verbose
"check_effective_target_sync_char_short: using cached result" 2
2312 set et_sync_char_short_saved
0
2313 # This is intentionally powerpc but not rs6000
, rs6000 doesn
't have the
2314 # load-reserved/store-conditional instructions.
2315 if { [istarget ia64-*-*]
2316 || [istarget i?86-*-*]
2317 || [istarget x86_64-*-*]
2318 || [istarget alpha*-*-*]
2319 || [istarget s390*-*-*]
2320 || [istarget powerpc*-*-*]
2321 || [istarget sparc64-*-*]
2322 || [istarget sparcv9-*-*]
2323 || [istarget mips*-*-*] } {
2324 set et_sync_char_short_saved 1
2328 verbose "check_effective_target_sync_char_short: returning $et_sync_char_short_saved" 2
2329 return $et_sync_char_short_saved
2332 # Return 1 if the target uses a ColdFire FPU.
2334 proc check_effective_target_coldfire_fpu { } {
2335 return [check_no_compiler_messages coldfire_fpu assembly {
2342 # Return true if this is a uClibc target.
2344 proc check_effective_target_uclibc {} {
2345 return [check_no_compiler_messages uclibc object {
2346 #include <features.h>
2347 #if !defined (__UCLIBC__)
2353 # Return true if this is a uclibc target and if the uclibc feature
2354 # described by __$feature__ is not present.
2356 proc check_missing_uclibc_feature {feature} {
2357 return [check_no_compiler_messages $feature object "
2358 #include <features.h>
2359 #if !defined (__UCLIBC) || defined (__${feature}__)
2365 # Return true if this is a Newlib target.
2367 proc check_effective_target_newlib {} {
2368 return [check_no_compiler_messages newlib object {
2374 # (a) an error of a few ULP is expected in string to floating-point
2375 # conversion functions; and
2376 # (b) overflow is not always detected correctly by those functions.
2378 proc check_effective_target_lax_strtofp {} {
2379 # By default, assume that all uClibc targets suffer from this.
2380 return [check_effective_target_uclibc]
2383 # Return 1 if this is a target for which wcsftime is a dummy
2384 # function that always returns 0.
2386 proc check_effective_target_dummy_wcsftime {} {
2387 # By default, assume that all uClibc targets suffer from this.
2388 return [check_effective_target_uclibc]
2391 # Return 1 if constructors with initialization priority arguments are
2392 # supposed on this target.
2394 proc check_effective_target_init_priority {} {
2395 return [check_no_compiler_messages init_priority assembly "
2396 void f() __attribute__((constructor (1000)));
2401 # Return 1 if the target matches the effective target 'arg', 0 otherwise.
2402 # This can be used with any check_* proc that takes no argument and
2403 # returns only 1 or 0. It could be used with check_* procs that take
2404 # arguments with keywords that pass particular arguments.
2406 proc is-effective-target { arg } {
2408 if { [info procs check_effective_target_${arg}] != [list] } {
2409 set selected [check_effective_target_${arg}]
2412 "vmx_hw" { set selected [check_vmx_hw_available] }
2413 "named_sections" { set selected [check_named_sections_available] }
2414 "gc_sections" { set selected [check_gc_sections_available] }
2415 "cxa_atexit" { set selected [check_cxa_atexit_available] }
2416 default { error "unknown effective target keyword `$arg'" }
2419 verbose
"is-effective-target: $arg $selected" 2
2423 #
Return 1 if the
argument is an effective
-target keyword
, 0 otherwise.
2425 proc is
-effective
-target
-keyword
{ arg } {
2426 if { [info procs check_effective_target_$
{arg}] != [list
] } {
2429 # These have different names
for their check_
* procs.
2431 "vmx_hw" { return 1 }
2432 "named_sections" { return 1 }
2433 "gc_sections" { return 1 }
2434 "cxa_atexit" { return 1 }
2435 default
{ return 0 }
2440 #
Return 1 if target default to short enums
2442 proc check_effective_target_short_enums
{ } {
2443 return [check_no_compiler_messages short_enums assembly
{
2445 int s
[sizeof
(enum foo
) == 1 ?
1 : -1];
2449 #
Return 1 if target supports merging string constants at link time.
2451 proc check_effective_target_string_merging
{ } {
2452 return [check_no_messages_and_pattern string_merging \
2453 "rodata\\.str" assembly {
2454 const char
*var
= "String";
2458 #
Return 1 if target has the basic signed and unsigned types in
2459 #
<stdint.h
>, 0 otherwise.
2461 proc check_effective_target_stdint_types
{ } {
2462 return [check_no_compiler_messages stdint_types assembly
{
2464 int8_t a
; int16_t b
; int32_t c
; int64_t d
;
2465 uint8_t e
; uint16_t f
; uint32_t g
; uint64_t h
;
2469 #
Return 1 if programs are intended to be run
on a simulator
2470 #
(i.e. slowly
) rather than hardware
(i.e. fast
).
2472 proc check_effective_target_simulator
{ } {
2474 # All
"src/sim" simulators set this one.
2475 if [board_info target
exists is_simulator
] {
2476 return [board_info target is_simulator
]
2479 # The
"sid" simulators don't set that one, but at least they set
2481 if [board_info target
exists slow_simulator
] {
2482 return [board_info target slow_simulator
]
2488 #
Return 1 if the target is a VxWorks kernel.
2490 proc check_effective_target_vxworks_kernel
{ } {
2491 return [check_no_compiler_messages vxworks_kernel assembly
{
2492 #
if !defined __vxworks || defined __RTP__
2498 #
Return 1 if the target is a VxWorks RTP.
2500 proc check_effective_target_vxworks_rtp
{ } {
2501 return [check_no_compiler_messages vxworks_rtp assembly
{
2502 #
if !defined __vxworks ||
!defined __RTP__
2508 #
Return 1 if the target is expected to provide wide character support.
2510 proc check_effective_target_wchar
{ } {
2511 if {[check_missing_uclibc_feature UCLIBC_HAS_WCHAR
]} {
2514 return [check_no_compiler_messages wchar assembly
{
2519 #
Return 1 if the target has
<pthread.h
>.
2521 proc check_effective_target_pthread_h
{ } {
2522 return [check_no_compiler_messages pthread_h assembly
{
2523 #
include <pthread.h
>
2527 #
Return 1 if the target can truncate a file from a file
-descriptor
,
2528 # as used by libgfortran
/io
/unix.c
:fd_truncate
; i.e. ftruncate or
2529 # chsize. We test
for a trivially functional truncation
; no stubs.
2530 # As libgfortran uses _FILE_OFFSET_BITS
64, we
do too
; it
'll cause a
2531 # different function to be used.
2533 proc check_effective_target_fd_truncate { } {
2535 #define _FILE_OFFSET_BITS 64
2541 FILE *f = fopen ("tst.tmp", "wb");
2543 const char t[] = "test writing more than ten characters";
2546 write (fd, t, sizeof (t) - 1);
2548 if (ftruncate (fd, 10) != 0)
2551 f = fopen ("tst.tmp", "rb");
2552 if (fread (s, 1, sizeof (s), f) != 10 || strncmp (s, t, 10) != 0)
2558 if { [check_runtime ftruncate $prog] } {
2562 regsub "ftruncate" $prog "chsize" prog
2563 return [check_runtime chsize $prog]
2566 # Add to FLAGS all the target-specific flags needed to access the c99 runtime.
2568 proc add_options_for_c99_runtime { flags } {
2569 if { [istarget *-*-solaris2*] } {
2570 return "$flags -std=c99"
2572 if { [istarget powerpc-*-darwin*] } {
2573 return "$flags -mmacosx-version-min=10.3"
2578 # Return 1 if the target provides a full C99 runtime.
2580 proc check_effective_target_c99_runtime { } {
2581 return [check_cached_effective_target c99_runtime {
2584 set file [open "$srcdir/gcc.dg/builtins-config.h"]
2585 set contents [read $file]
2588 #ifndef HAVE_C99_RUNTIME
2592 check_no_compiler_messages_nocache c99_runtime assembly \
2593 $contents [add_options_for_c99_runtime ""]
2597 # Return 1 if target wchar_t is at least 4 bytes.
2599 proc check_effective_target_4byte_wchar_t { } {
2600 return [check_no_compiler_messages 4byte_wchar_t object {
2601 int dummy[sizeof (__WCHAR_TYPE__) >= 4 ? 1 : -1];
2605 # Return 1 if the target supports automatic stack alignment.
2607 proc check_effective_target_automatic_stack_alignment { } {
2608 if { [istarget i?86*-*-*]
2609 || [istarget x86_64-*-*] } then {
2616 # Return 1 if avx instructions can be compiled.
2618 proc check_effective_target_avx { } {
2619 return [check_no_compiler_messages avx object {
2620 void _mm256_zeroall (void)
2622 __builtin_ia32_vzeroall ();
2627 # Return 1 if C wchar_t type is compatible with char16_t.
2629 proc check_effective_target_wchar_t_char16_t_compatible { } {
2630 return [check_no_compiler_messages wchar_t_char16_t object {
2632 __CHAR16_TYPE__ *p16 = &wc;
2633 char t[(((__CHAR16_TYPE__) -1) < 0 == ((__WCHAR_TYPE__) -1) < 0) ? 1 : -1];
2637 # Return 1 if C wchar_t type is compatible with char32_t.
2639 proc check_effective_target_wchar_t_char32_t_compatible { } {
2640 return [check_no_compiler_messages wchar_t_char32_t object {
2642 __CHAR32_TYPE__ *p32 = &wc;
2643 char t[(((__CHAR32_TYPE__) -1) < 0 == ((__WCHAR_TYPE__) -1) < 0) ? 1 : -1];
2647 # Return 1 if pow10 function exists.
2649 proc check_effective_target_pow10 { } {
2650 return [check_runtime pow10 {
2660 # Return 1 if current options generate DFP instructions, 0 otherwise.
2662 proc check_effective_target_hard_dfp {} {
2663 return [check_no_messages_and_pattern hard_dfp "!adddd3" assembly {
2665 void foo (void) { z = x + y; }