diff options
Diffstat (limited to 'llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp')
| -rw-r--r-- | llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp b/llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp index ded2f25..3ff8994 100644 --- a/llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp +++ b/llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp @@ -2135,6 +2135,21 @@ bool NVPTXDAGToDAGISel::tryStoreRetval(SDNode *N) { NVPTX::StoreRetvalI8, NVPTX::StoreRetvalI16, NVPTX::StoreRetvalI32, NVPTX::StoreRetvalI64, NVPTX::StoreRetvalF32, NVPTX::StoreRetvalF64); + if (Opcode == NVPTX::StoreRetvalI8) { + // Fine tune the opcode depending on the size of the operand. + // This helps to avoid creating redundant COPY instructions in + // InstrEmitter::AddRegisterOperand(). + switch (Ops[0].getSimpleValueType().SimpleTy) { + default: + break; + case MVT::i32: + Opcode = NVPTX::StoreRetvalI8TruncI32; + break; + case MVT::i64: + Opcode = NVPTX::StoreRetvalI8TruncI64; + break; + } + } break; case 2: Opcode = pickOpcodeForVT(Mem->getMemoryVT().getSimpleVT().SimpleTy, @@ -2211,6 +2226,21 @@ bool NVPTXDAGToDAGISel::tryStoreParam(SDNode *N) { NVPTX::StoreParamI8, NVPTX::StoreParamI16, NVPTX::StoreParamI32, NVPTX::StoreParamI64, NVPTX::StoreParamF32, NVPTX::StoreParamF64); + if (Opcode == NVPTX::StoreParamI8) { + // Fine tune the opcode depending on the size of the operand. + // This helps to avoid creating redundant COPY instructions in + // InstrEmitter::AddRegisterOperand(). + switch (Ops[0].getSimpleValueType().SimpleTy) { + default: + break; + case MVT::i32: + Opcode = NVPTX::StoreParamI8TruncI32; + break; + case MVT::i64: + Opcode = NVPTX::StoreParamI8TruncI64; + break; + } + } break; case 2: Opcode = pickOpcodeForVT(Mem->getMemoryVT().getSimpleVT().SimpleTy, |