diff options
Diffstat (limited to 'llvm/lib/Target/AArch64')
| -rw-r--r-- | llvm/lib/Target/AArch64/AArch64InstructionSelector.cpp | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/llvm/lib/Target/AArch64/AArch64InstructionSelector.cpp b/llvm/lib/Target/AArch64/AArch64InstructionSelector.cpp index 40fec6c2669..51501c1a9c7 100644 --- a/llvm/lib/Target/AArch64/AArch64InstructionSelector.cpp +++ b/llvm/lib/Target/AArch64/AArch64InstructionSelector.cpp @@ -103,6 +103,7 @@ private: MachineRegisterInfo &MRI) const; bool selectVectorICmp(MachineInstr &I, MachineRegisterInfo &MRI) const; bool selectIntrinsicTrunc(MachineInstr &I, MachineRegisterInfo &MRI) const; + bool selectIntrinsicRound(MachineInstr &I, MachineRegisterInfo &MRI) const; unsigned emitConstantPoolEntry(Constant *CPVal, MachineFunction &MF) const; MachineInstr *emitLoadFromConstantPool(Constant *CPVal, MachineIRBuilder &MIRBuilder) const; @@ -1849,6 +1850,8 @@ bool AArch64InstructionSelector::select(MachineInstr &I, } case TargetOpcode::G_INTRINSIC_TRUNC: return selectIntrinsicTrunc(I, MRI); + case TargetOpcode::G_INTRINSIC_ROUND: + return selectIntrinsicRound(I, MRI); case TargetOpcode::G_BUILD_VECTOR: return selectBuildVector(I, MRI); case TargetOpcode::G_MERGE_VALUES: @@ -1923,6 +1926,61 @@ bool AArch64InstructionSelector::selectIntrinsicTrunc( return constrainSelectedInstRegOperands(I, TII, TRI, RBI); } +bool AArch64InstructionSelector::selectIntrinsicRound( + MachineInstr &I, MachineRegisterInfo &MRI) const { + const LLT SrcTy = MRI.getType(I.getOperand(0).getReg()); + + // Select the correct opcode. + unsigned Opc = 0; + if (!SrcTy.isVector()) { + switch (SrcTy.getSizeInBits()) { + default: + case 16: + Opc = AArch64::FRINTAHr; + break; + case 32: + Opc = AArch64::FRINTASr; + break; + case 64: + Opc = AArch64::FRINTADr; + break; + } + } else { + unsigned NumElts = SrcTy.getNumElements(); + switch (SrcTy.getElementType().getSizeInBits()) { + default: + break; + case 16: + if (NumElts == 4) + Opc = AArch64::FRINTAv4f16; + else if (NumElts == 8) + Opc = AArch64::FRINTAv8f16; + break; + case 32: + if (NumElts == 2) + Opc = AArch64::FRINTAv2f32; + else if (NumElts == 4) + Opc = AArch64::FRINTAv4f32; + break; + case 64: + if (NumElts == 2) + Opc = AArch64::FRINTAv2f64; + break; + } + } + + if (!Opc) { + // Didn't get an opcode above, bail. + LLVM_DEBUG(dbgs() << "Unsupported type for G_INTRINSIC_ROUND!\n"); + return false; + } + + // Legalization would have set us up perfectly for this; we just need to + // set the opcode and move on. + I.setDesc(TII.get(Opc)); + return constrainSelectedInstRegOperands(I, TII, TRI, RBI); +} + bool AArch64InstructionSelector::selectVectorICmp( MachineInstr &I, MachineRegisterInfo &MRI) const { unsigned DstReg = I.getOperand(0).getReg(); |
