diff options
| author | Bill Wendling <isanbard@gmail.com> | 2007-12-17 23:07:56 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2007-12-17 23:07:56 +0000 |
| commit | 627c00b663f881600b4af1ae135af6ee2cb19c1a (patch) | |
| tree | bdcc9719949b741a19aeeb13027fdfe824c2b8fe /lib/Target/X86/X86InstrFPStack.td | |
| parent | f9b83fcf95e8a280d7b117af8858596fe5b10d94 (diff) | |
Add "mayHaveSideEffects" and "neverHasSideEffects" flags to some instructions. I
based what flag to set on whether it was already marked as
"isRematerializable". If there was a further check to determine if it's "really"
rematerializable, then I marked it as "mayHaveSideEffects" and created a check
in the X86 back-end similar to the remat one.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45132 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86InstrFPStack.td')
| -rw-r--r-- | lib/Target/X86/X86InstrFPStack.td | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/Target/X86/X86InstrFPStack.td b/lib/Target/X86/X86InstrFPStack.td index 13b5d229d1..3c6790fc27 100644 --- a/lib/Target/X86/X86InstrFPStack.td +++ b/lib/Target/X86/X86InstrFPStack.td @@ -349,7 +349,7 @@ def CMOVNP_F : FPI<0xD8, AddRegFrm, (outs RST:$op), (ins), let isLoad = 1 in { def LD_Fp32m : FpIf32<(outs RFP32:$dst), (ins f32mem:$src), ZeroArgFP, [(set RFP32:$dst, (loadf32 addr:$src))]>; -let isReMaterializable = 1 in +let isReMaterializable = 1, mayHaveSideEffects = 1 in def LD_Fp64m : FpIf64<(outs RFP64:$dst), (ins f64mem:$src), ZeroArgFP, [(set RFP64:$dst, (loadf64 addr:$src))]>; def LD_Fp80m : FpI_<(outs RFP80:$dst), (ins f80mem:$src), ZeroArgFP, @@ -466,7 +466,7 @@ def ST_FPrr : FPI<0xD8, AddRegFrm, (outs), (ins RST:$op), "fstp\t$op">, DD; def XCH_F : FPI<0xC8, AddRegFrm, (outs), (ins RST:$op), "fxch\t$op">, D9; // Floating point constant loads. -let isReMaterializable = 1 in { +let isReMaterializable = 1, neverHasSideEffects = 1 in { def LD_Fp032 : FpIf32<(outs RFP32:$dst), (ins), ZeroArgFP, [(set RFP32:$dst, fpimm0)]>; def LD_Fp132 : FpIf32<(outs RFP32:$dst), (ins), ZeroArgFP, |