1 /* Simple check that sibling calls are performed from a
2 void non-leaf-function taking no arguments calling a function which
3 is about the same as itself.
5 Copyright (C) 2002 Free Software Foundation Inc.
6 Contributed by Hans-Peter Nilsson <hp@bitrange.com> */
8 /* { dg-do run { xfail arc-*-* avr-*-* c4x-*-* cris-*-* crisv32-*-* h8300-*-* hppa*64*-*-* m32r-*-* m68hc1?-*-* mcore-*-* mn10300-*-* xstormy16-*-* v850*-*-* vax-*-* xtensa-*-* } } */
9 /* -mlongcall disables sibcall patterns. */
10 /* { dg-skip-if "" { powerpc*-*-* } { "-mlongcall" } { "" } } */
11 /* { dg-options "-O2 -foptimize-sibling-calls" } */
13 /* The option -foptimize-sibling-calls is the default, but serves as
14 marker. This test is xfailed on targets without sibcall patterns
15 (except targets where the test does not work due to the return address
16 not saved on the regular stack). */
18 extern void abort (void);
19 extern void exit (int);
21 /* Sibcalls are not supported in MIPS16 mode, which has direct calls but
24 #define ATTR __attribute__((nomips16))
29 static ATTR
void recurser_void1 (void);
30 static ATTR
void recurser_void2 (void);
31 extern void track (void);
40 /* The functions should get the same stack-frame, and best way to make it
41 reasonably sure is to make them have the same contents (regarding the
44 static void __attribute__((noinline
)) ATTR
47 if (n
== 0 || n
== 7 || n
== 8)
56 static void __attribute__((noinline
)) ATTR
59 if (n
== 0 || n
== 7 || n
== 8)
76 trackpoint
= stackpos
;
77 else if ((n
!= 7 && n
!= 8) || trackpoint
!= stackpos
)