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| author | Dean Michael Berris <dberris@google.com> | 2018-07-30 09:45:09 +0000 |
|---|---|---|
| committer | Dean Michael Berris <dberris@google.com> | 2018-07-30 09:45:09 +0000 |
| commit | 927b3da6c9501617d65ca4adf5bcb60c5a8f8398 (patch) | |
| tree | 4b9956206cd1160f6a236744bd0c0ea54ec03ecf /llvm/lib/Target | |
| parent | 7f0d05d53219716394760dd16af9562d36ab96d6 (diff) | |
| download | bcm5719-llvm-927b3da6c9501617d65ca4adf5bcb60c5a8f8398.tar.gz bcm5719-llvm-927b3da6c9501617d65ca4adf5bcb60c5a8f8398.zip | |
Revert "[X86] Correct the immediate cost for 'add/sub i64 %x, 0x80000000'."
This reverts commit r338204.
llvm-svn: 338236
Diffstat (limited to 'llvm/lib/Target')
| -rw-r--r-- | llvm/lib/Target/X86/X86TargetTransformInfo.cpp | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp index 0257c42def2..1b260d8d45d 100644 --- a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp +++ b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp @@ -2332,15 +2332,9 @@ int X86TTIImpl::getIntImmCost(unsigned Opcode, unsigned Idx, const APInt &Imm, // immediates here as the normal path expects bit 31 to be sign extended. if (Idx == 1 && Imm.getBitWidth() == 64 && isUInt<32>(Imm.getZExtValue())) return TTI::TCC_Free; - ImmIdx = 1; - break; + LLVM_FALLTHROUGH; case Instruction::Add: case Instruction::Sub: - // For add/sub, we can use the opposite instruction for INT32_MIN. - if (Idx == 1 && Imm.getBitWidth() == 64 && isInt<32>(-Imm.getSExtValue())) - return TTI::TCC_Free; - ImmIdx = 1; - break; case Instruction::Mul: case Instruction::UDiv: case Instruction::SDiv: |
