diff options
Diffstat (limited to 'contrib/llvm-project/llvm/lib/CodeGen/GlobalISel/Utils.cpp')
| -rw-r--r-- | contrib/llvm-project/llvm/lib/CodeGen/GlobalISel/Utils.cpp | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/contrib/llvm-project/llvm/lib/CodeGen/GlobalISel/Utils.cpp b/contrib/llvm-project/llvm/lib/CodeGen/GlobalISel/Utils.cpp index 1a440c064a59..b0b84763e922 100644 --- a/contrib/llvm-project/llvm/lib/CodeGen/GlobalISel/Utils.cpp +++ b/contrib/llvm-project/llvm/lib/CodeGen/GlobalISel/Utils.cpp @@ -834,10 +834,9 @@ bool llvm::isKnownToBeAPowerOfTwo(Register Reg, const MachineRegisterInfo &MRI, case TargetOpcode::G_BUILD_VECTOR: { // TODO: Probably should have a recursion depth guard since you could have // bitcasted vector elements. - for (unsigned I = 1, E = MI.getNumOperands(); I != E; ++I) { - if (!isKnownToBeAPowerOfTwo(MI.getOperand(I).getReg(), MRI, KB)) + for (const MachineOperand &MO : llvm::drop_begin(MI.operands())) + if (!isKnownToBeAPowerOfTwo(MO.getReg(), MRI, KB)) return false; - } return true; } @@ -845,8 +844,8 @@ bool llvm::isKnownToBeAPowerOfTwo(Register Reg, const MachineRegisterInfo &MRI, // Only handle constants since we would need to know if number of leading // zeros is greater than the truncation amount. const unsigned BitWidth = Ty.getScalarSizeInBits(); - for (unsigned I = 1, E = MI.getNumOperands(); I != E; ++I) { - auto Const = getIConstantVRegVal(MI.getOperand(I).getReg(), MRI); + for (const MachineOperand &MO : llvm::drop_begin(MI.operands())) { + auto Const = getIConstantVRegVal(MO.getReg(), MRI); if (!Const || !Const->zextOrTrunc(BitWidth).isPowerOf2()) return false; } @@ -1031,16 +1030,22 @@ Optional<ValueAndVReg> getAnyConstantSplat(Register VReg, return SplatValAndReg; } -bool isBuildVectorConstantSplat(const MachineInstr &MI, - const MachineRegisterInfo &MRI, - int64_t SplatValue, bool AllowUndef) { - if (auto SplatValAndReg = - getAnyConstantSplat(MI.getOperand(0).getReg(), MRI, AllowUndef)) +} // end anonymous namespace + +bool llvm::isBuildVectorConstantSplat(const Register Reg, + const MachineRegisterInfo &MRI, + int64_t SplatValue, bool AllowUndef) { + if (auto SplatValAndReg = getAnyConstantSplat(Reg, MRI, AllowUndef)) return mi_match(SplatValAndReg->VReg, MRI, m_SpecificICst(SplatValue)); return false; } -} // end anonymous namespace +bool llvm::isBuildVectorConstantSplat(const MachineInstr &MI, + const MachineRegisterInfo &MRI, + int64_t SplatValue, bool AllowUndef) { + return isBuildVectorConstantSplat(MI.getOperand(0).getReg(), MRI, SplatValue, + AllowUndef); +} Optional<int64_t> llvm::getBuildVectorConstantSplat(const MachineInstr &MI, |