* config/i386/i386.md (logsf2, logdf2, logxf2, logdf2): New patterns
commit26398ccb63dde50f8039ed075b55280a2521f4d3
authorsayle <sayle@138bc75d-0d04-0410-961f-82ee72b054a4>
Mon, 12 May 2003 02:51:40 +0000 (12 02:51 +0000)
committersayle <sayle@138bc75d-0d04-0410-961f-82ee72b054a4>
Mon, 12 May 2003 02:51:40 +0000 (12 02:51 +0000)
tree152c83a01df523308adb9ade7e3ecf52d5db6386
parent13388b58aa373a807977b6358e8b5ee4fb74f128
* config/i386/i386.md (logsf2, logdf2, logxf2, logdf2): New patterns
to implement log, logf and logl built-ins as inline x87 intrinsics.
(UNSPEC_FYL2X): New unspec to represent x87's "fyl2x" instruction.
(*fyl2x_sfxf3, *fyl2x_dfxf3, *fyl2x_xf3, *fyl2x_tfxf3): New insn
patterns for x87's "fyl2x" instruction, used by log?f2 patterns.

* reg-stack.c (subst_stack_regs_pat): Handle UNSPEC_FYL2X like
UNSPEC_FPATAN, i.e. replaces two stack operands with single result.

* gcc.dg/i386-387-1.c: Update to also test log.
* gcc.dg/i386-387-2.c: Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@66709 138bc75d-0d04-0410-961f-82ee72b054a4
gcc/ChangeLog
gcc/config/i386/i386.md
gcc/reg-stack.c
gcc/testsuite/ChangeLog
gcc/testsuite/gcc.dg/i386-387-1.c
gcc/testsuite/gcc.dg/i386-387-2.c