diff options
| author | Uros Bizjak <ubizjak@gmail.com> | 2007-01-31 13:30:20 +0100 |
|---|---|---|
| committer | Uros Bizjak <uros@gcc.gnu.org> | 2007-01-31 13:30:20 +0100 |
| commit | 9ed4207fce7efe340cbdf1017fa0d1271a710487 (patch) | |
| tree | 8644f765075eeb7076137f6a73a27bd54182e229 /gcc/reg-stack.c | |
| parent | 010dc0fdd0c5189383207fde6281d8f9c1e06908 (diff) | |
| download | gcc-9ed4207fce7efe340cbdf1017fa0d1271a710487.tar.gz | |
optabs.h (enum optab_index): Add new OTI_isinf.
* optabs.h (enum optab_index): Add new OTI_isinf.
(isinf_optab): Define corresponding macro.
* optabs.c (init_optabs): Initialize isinf_optab.
* genopinit.c (optabs): Implement isinf_optab using isinf?f2
patterns.
* builtins.c (mathfn_built_in): Handle BUILT_IN_ISINF{,F,L}.
(expand_builtin_interclass_mathfn): Expand BUILT_IN_ISINF{,F,L}
using isinf_optab.
(expand_builtin): Expand BUILT_IN_ISINF{,F,L} using
expand_builtin_interclass_mathfn.
* reg_stack.c (subst_stack_regs_pat): Handle UNSPEC_FXAM.
* config/i386/i386.md (UNSPEC_FXAM): New constant.
(fxam<mode>2_i387): New insn pattern.
(isinf<mode>2) New expander to implement isinf, isinff and isinfl
built-in functions as x87 inline asm.
testsuite/ChangeLog:
* gcc.dg/builtins-63.c: New test.
From-SVN: r121419
Diffstat (limited to 'gcc/reg-stack.c')
| -rw-r--r-- | gcc/reg-stack.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/gcc/reg-stack.c b/gcc/reg-stack.c index 0df425eebeb..f21d833c00b 100644 --- a/gcc/reg-stack.c +++ b/gcc/reg-stack.c @@ -1629,6 +1629,27 @@ subst_stack_regs_pat (rtx insn, stack regstack, rtx pat) replace_reg (src1, FIRST_STACK_REG); break; + case UNSPEC_FXAM: + + /* This insn only operate on the top of the stack. */ + + src1 = get_true_reg (&XVECEXP (pat_src, 0, 0)); + emit_swap_insn (insn, regstack, *src1); + + src1_note = find_regno_note (insn, REG_DEAD, REGNO (*src1)); + + replace_reg (src1, FIRST_STACK_REG); + + if (src1_note) + { + remove_regno_note (insn, REG_DEAD, + REGNO (XEXP (src1_note, 0))); + emit_pop_insn (insn, regstack, XEXP (src1_note, 0), + EMIT_AFTER); + } + + break; + case UNSPEC_SIN: case UNSPEC_COS: case UNSPEC_FRNDINT: |