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| author | Evan Cheng <evan.cheng@apple.com> | 2007-09-28 01:19:48 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2007-09-28 01:19:48 +0000 |
| commit | edfc5b2204cd8de2a2c7946952220545a32ded2d (patch) | |
| tree | 1d45bf3a497e34031d61e7fcb465f244ba8a42be /llvm/lib | |
| parent | 25a00a63eb4e4485ef26c0376a965eb34979f3d9 (diff) | |
| download | bcm5719-llvm-edfc5b2204cd8de2a2c7946952220545a32ded2d.tar.gz bcm5719-llvm-edfc5b2204cd8de2a2c7946952220545a32ded2d.zip | |
Pessimisively assume ADJCALLSTACKDOWN / ADJCALLSTACKUP (which becomes sub / add) clobbers EFLAGS.
llvm-svn: 42426
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/X86/X86InstrInfo.td | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/llvm/lib/Target/X86/X86InstrInfo.td b/llvm/lib/Target/X86/X86InstrInfo.td index 126677d4074..88f3b09c8e5 100644 --- a/llvm/lib/Target/X86/X86InstrInfo.td +++ b/llvm/lib/Target/X86/X86InstrInfo.td @@ -261,7 +261,9 @@ def extloadi32i16 : PatFrag<(ops node:$ptr), (i32 (extloadi16 node:$ptr))>; // ADJCALLSTACKDOWN/UP implicitly use/def ESP because they may be expanded into // a stack adjustment and the codegen must know that they may modify the stack // pointer before prolog-epilog rewriting occurs. -let Defs = [ESP], Uses = [ESP] in { +// Pessimisively assume ADJCALLSTACKDOWN / ADJCALLSTACKUP will become sub / add +// which can clobber EFLAGS. +let Defs = [ESP, EFLAGS], Uses = [ESP] in { def ADJCALLSTACKDOWN : I<0, Pseudo, (outs), (ins i32imm:$amt), "#ADJCALLSTACKDOWN", [(X86callseq_start imm:$amt)]>; def ADJCALLSTACKUP : I<0, Pseudo, (outs), (ins i32imm:$amt1, i32imm:$amt2), |
