diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp b/llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp index 08f29f4621c..1b7c7a6e52b 100644 --- a/llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp +++ b/llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp @@ -362,6 +362,26 @@ MachineInstrBuilder MachineIRBuilder::buildZExtOrTrunc(unsigned Res, return buildInstr(Opcode).addDef(Res).addUse(Op); } + +MachineInstrBuilder MachineIRBuilder::buildCast(unsigned Dst, unsigned Src) { + LLT SrcTy = MRI->getType(Src); + LLT DstTy = MRI->getType(Dst); + if (SrcTy == DstTy) + return buildCopy(Dst, Src); + + unsigned Opcode; + if (SrcTy.isPointer() && DstTy.isScalar()) + Opcode = TargetOpcode::G_PTRTOINT; + else if (DstTy.isPointer() && SrcTy.isScalar()) + Opcode = TargetOpcode::G_INTTOPTR; + else { + assert(!SrcTy.isPointer() && !DstTy.isPointer() && "n G_ADDRCAST yet"); + Opcode = TargetOpcode::G_BITCAST; + } + + return buildInstr(Opcode).addDef(Dst).addUse(Src); +} + MachineInstrBuilder MachineIRBuilder::buildExtract(ArrayRef<unsigned> Results, ArrayRef<uint64_t> Indices, unsigned Src) { @@ -462,6 +482,11 @@ MachineInstrBuilder MachineIRBuilder::buildUnmerge(ArrayRef<unsigned> Res, MachineInstrBuilder MachineIRBuilder::buildInsert(unsigned Res, unsigned Src, unsigned Op, unsigned Index) { + if (MRI->getType(Res).getSizeInBits() == MRI->getType(Op).getSizeInBits()) { + assert(Index == 0 && "insertion past the end of a register"); + return buildCast(Res, Op); + } + return buildInstr(TargetOpcode::G_INSERT) .addDef(Res) .addUse(Src) |
