diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/X86/X86TargetTransformInfo.cpp | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp index 1543f109b4c..ce060aba644 100644 --- a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp +++ b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp @@ -956,15 +956,19 @@ unsigned X86TTI::getIntImmCost(unsigned Opcode, unsigned Idx, const APInt &Imm, case Instruction::SDiv: case Instruction::URem: case Instruction::SRem: - case Instruction::Shl: - case Instruction::LShr: - case Instruction::AShr: case Instruction::And: case Instruction::Or: case Instruction::Xor: case Instruction::ICmp: ImmIdx = 1; break; + // Always return TCC_Free for the shift value of a shift instruction. + case Instruction::Shl: + case Instruction::LShr: + case Instruction::AShr: + if (Idx == 1) + return TCC_Free; + break; case Instruction::Trunc: case Instruction::ZExt: case Instruction::SExt: |
