wangtao
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

[X86] Merge itineraries for CLC, CMC, and STC. 

These are very simple flag setting instructions that appear to only be a single uop. They're unlikely to need this separation.

llvm-svn: 329414
This commit is contained in:
Craig Topper 2018-04-06 16:16:43 +00:00
parent 61f704e4bd
commit 22d25a08ae
3 changed files with 5 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
llvm/lib/Target/X86/X86InstrInfo.td
View File

@ -2119,13 +2119,13 @@ def INSL : I<0x6D, RawFrmDst, (outs), (ins dstidx32:$dst),
// Flag instructions
let SchedRW = [WriteALU] in {
def CLC : I<0xF8, RawFrm, (outs), (ins), "clc", [], IIC_CLC>;
def STC : I<0xF9, RawFrm, (outs), (ins), "stc", [], IIC_STC>;
def CLC : I<0xF8, RawFrm, (outs), (ins), "clc", [], IIC_CLC_CMC_STC>;
def STC : I<0xF9, RawFrm, (outs), (ins), "stc", [], IIC_CLC_CMC_STC>;
def CLI : I<0xFA, RawFrm, (outs), (ins), "cli", [], IIC_CLI>;
def STI : I<0xFB, RawFrm, (outs), (ins), "sti", [], IIC_STI>;
def CLD : I<0xFC, RawFrm, (outs), (ins), "cld", [], IIC_CLD>;
def STD : I<0xFD, RawFrm, (outs), (ins), "std", [], IIC_STD>;
def CMC : I<0xF5, RawFrm, (outs), (ins), "cmc", [], IIC_CMC>;
def CMC : I<0xF5, RawFrm, (outs), (ins), "cmc", [], IIC_CLC_CMC_STC>;
def CLTS : I<0x06, RawFrm, (outs), (ins), "clts", [], IIC_CLTS>, TB;
}

4
llvm/lib/Target/X86/X86Schedule.td
View File

@ -641,12 +641,10 @@ def IIC_CMPXCHG_8B : InstrItinClass;
def IIC_CMPXCHG_16B : InstrItinClass;
def IIC_LODS : InstrItinClass;
def IIC_OUTS : InstrItinClass;
def IIC_CLC : InstrItinClass;
def IIC_CLC_CMC_STC : InstrItinClass;
def IIC_CLD : InstrItinClass;
def IIC_CLI : InstrItinClass;
def IIC_CMC : InstrItinClass;
def IIC_CLTS : InstrItinClass;
def IIC_STC : InstrItinClass;
def IIC_STI : InstrItinClass;
def IIC_STD : InstrItinClass;
def IIC_XLAT : InstrItinClass;

4
llvm/lib/Target/X86/X86ScheduleAtom.td
View File

@ -523,12 +523,10 @@ def AtomItineraries : ProcessorItineraries<
InstrItinData<IIC_CMPXCHG_16B, [InstrStage<22, [Port0, Port1]>] >,
InstrItinData<IIC_LODS, [InstrStage<2, [Port0, Port1]>] >,
InstrItinData<IIC_OUTS, [InstrStage<74, [Port0, Port1]>] >,
InstrItinData<IIC_CLC, [InstrStage<1, [Port0, Port1]>] >,
InstrItinData<IIC_CLC_CMC_STC, [InstrStage<1, [Port0, Port1]>] >,
InstrItinData<IIC_CLD, [InstrStage<3, [Port0, Port1]>] >,
InstrItinData<IIC_CLI, [InstrStage<14, [Port0, Port1]>] >,
InstrItinData<IIC_CMC, [InstrStage<1, [Port0, Port1]>] >,
InstrItinData<IIC_CLTS, [InstrStage<33, [Port0, Port1]>] >,
InstrItinData<IIC_STC, [InstrStage<1, [Port0, Port1]>] >,
InstrItinData<IIC_STI, [InstrStage<17, [Port0, Port1]>] >,
InstrItinData<IIC_STD, [InstrStage<21, [Port0, Port1]>] >,
InstrItinData<IIC_XLAT, [InstrStage<6, [Port0, Port1]>] >,