================
@@ -431,6 +422,19 @@ MachineInstr *GCNDPPCombine::createDPPInst(MachineInstr
&OrigMI,
DPPInst.add(*TII->getNamedOperand(MovMI, AMDGPU::OpName::row_mask));
DPPInst.add(*TII->getNamedOperand(MovMI, AMDGPU::OpName::bank_mask));
DPPInst.addImm(CombBCZ ? 1 : 0);
+
+ for (AMDGPU::OpName Op :
+ {AMDGPU::OpName::src0, AMDGPU::OpName::src1, AMDGPU::OpName::src2}) {
+ int OpIdx = AMDGPU::getNamedOperandIdx(DPPOp, Op);
+ if (OpIdx == -1)
+ break;
+
+ if (!TII->isOperandLegal(*DPPInst, OpIdx)) {
+ LLVM_DEBUG(dbgs() << " failed: src operand is illegal\n");
----------------
frederik-h wrote:
I think it would be nice for the debug message to continue saying which operand
was illegal. What do you think?
https://github.com/llvm/llvm-project/pull/155595
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