[llvm] Adding slow indirect call tuning to zen5 (PR #195221)
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Thu Apr 30 22:45:53 PDT 2026
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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp,h -- llvm/lib/Target/X86/X86ISelDAGToDAG.cpp llvm/lib/Target/X86/X86InstrInfo.cpp llvm/lib/Target/X86/X86TargetTransformInfo.h --diff_from_common_commit
``````````
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``````````diff
diff --git a/llvm/lib/Target/X86/X86TargetTransformInfo.h b/llvm/lib/Target/X86/X86TargetTransformInfo.h
index d7c4bdde9..b8356db7a 100644
--- a/llvm/lib/Target/X86/X86TargetTransformInfo.h
+++ b/llvm/lib/Target/X86/X86TargetTransformInfo.h
@@ -42,73 +42,44 @@ class X86TTIImpl final : public BasicTTIImplBase<X86TTIImpl> {
X86::FeatureX86_64,
// These features don't have any intrinsics or ABI effect.
- X86::FeatureNOPL,
- X86::FeatureCX16,
- X86::FeatureLAHFSAHF64,
+ X86::FeatureNOPL, X86::FeatureCX16, X86::FeatureLAHFSAHF64,
// Some older targets can be setup to fold unaligned loads.
X86::FeatureSSEUnalignedMem,
// Codegen control options.
- X86::TuningFast11ByteNOP,
- X86::TuningFast15ByteNOP,
- X86::TuningFastBEXTR,
- X86::TuningFastHorizontalOps,
- X86::TuningFastLZCNT,
- X86::TuningFastScalarFSQRT,
- X86::TuningFastSHLDRotate,
- X86::TuningFastScalarShiftMasks,
- X86::TuningFastVectorShiftMasks,
+ X86::TuningFast11ByteNOP, X86::TuningFast15ByteNOP, X86::TuningFastBEXTR,
+ X86::TuningFastHorizontalOps, X86::TuningFastLZCNT,
+ X86::TuningFastScalarFSQRT, X86::TuningFastSHLDRotate,
+ X86::TuningFastScalarShiftMasks, X86::TuningFastVectorShiftMasks,
X86::TuningFastVariableCrossLaneShuffle,
- X86::TuningFastVariablePerLaneShuffle,
- X86::TuningFastVectorFSQRT,
- X86::TuningLEAForSP,
- X86::TuningLEAUsesAG,
- X86::TuningLZCNTFalseDeps,
- X86::TuningBranchFusion,
- X86::TuningMacroFusion,
- X86::TuningPadShortFunctions,
- X86::TuningPOPCNTFalseDeps,
- X86::TuningMULCFalseDeps,
- X86::TuningPERMFalseDeps,
- X86::TuningRANGEFalseDeps,
- X86::TuningGETMANTFalseDeps,
- X86::TuningMULLQFalseDeps,
- X86::TuningSlow3OpsLEA,
- X86::TuningSlowDivide32,
- X86::TuningSlowDivide64,
- X86::TuningSlowIncDec,
- X86::TuningSlowLEA,
- X86::TuningSlowPMADDWD,
- X86::TuningSlowPMULLD,
- X86::TuningSlowSHLD,
- X86::TuningSlowTwoMemOps,
- X86::TuningSlowIndirectCall,
- X86::TuningSlowUAMem16,
- X86::TuningPreferMaskRegisters,
- X86::TuningInsertVZEROUPPER,
- X86::TuningUseSLMArithCosts,
- X86::TuningUseGLMDivSqrtCosts,
- X86::TuningNoDomainDelay,
- X86::TuningNoDomainDelayMov,
- X86::TuningNoDomainDelayShuffle,
- X86::TuningNoDomainDelayBlend,
- X86::TuningPreferShiftShuffle,
- X86::TuningFastImmVectorShift,
+ X86::TuningFastVariablePerLaneShuffle, X86::TuningFastVectorFSQRT,
+ X86::TuningLEAForSP, X86::TuningLEAUsesAG, X86::TuningLZCNTFalseDeps,
+ X86::TuningBranchFusion, X86::TuningMacroFusion,
+ X86::TuningPadShortFunctions, X86::TuningPOPCNTFalseDeps,
+ X86::TuningMULCFalseDeps, X86::TuningPERMFalseDeps,
+ X86::TuningRANGEFalseDeps, X86::TuningGETMANTFalseDeps,
+ X86::TuningMULLQFalseDeps, X86::TuningSlow3OpsLEA,
+ X86::TuningSlowDivide32, X86::TuningSlowDivide64, X86::TuningSlowIncDec,
+ X86::TuningSlowLEA, X86::TuningSlowPMADDWD, X86::TuningSlowPMULLD,
+ X86::TuningSlowSHLD, X86::TuningSlowTwoMemOps,
+ X86::TuningSlowIndirectCall, X86::TuningSlowUAMem16,
+ X86::TuningPreferMaskRegisters, X86::TuningInsertVZEROUPPER,
+ X86::TuningUseSLMArithCosts, X86::TuningUseGLMDivSqrtCosts,
+ X86::TuningNoDomainDelay, X86::TuningNoDomainDelayMov,
+ X86::TuningNoDomainDelayShuffle, X86::TuningNoDomainDelayBlend,
+ X86::TuningPreferShiftShuffle, X86::TuningFastImmVectorShift,
X86::TuningFastDPWSSD,
// Perf-tuning flags.
- X86::TuningFastGather,
- X86::TuningSlowUAMem32,
+ X86::TuningFastGather, X86::TuningSlowUAMem32,
X86::TuningAllowLight256Bit,
// Based on whether user set the -mprefer-vector-width command line.
- X86::TuningPrefer128Bit,
- X86::TuningPrefer256Bit,
+ X86::TuningPrefer128Bit, X86::TuningPrefer256Bit,
// CPU name enums. These just follow CPU string.
- X86::ProcIntelAtom
- };
+ X86::ProcIntelAtom};
public:
explicit X86TTIImpl(const X86TargetMachine *TM, const Function &F)
``````````
</details>
https://github.com/llvm/llvm-project/pull/195221
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