[llvm] [TwoAddressInstruction] Recompute live intervals for partial defs (PR #74431)
Carl Ritson via llvm-commits
llvm-commits at lists.llvm.org
Thu Jan 11 00:16:35 PST 2024
================
@@ -1937,13 +1937,16 @@ eliminateRegSequence(MachineBasicBlock::iterator &MBBI) {
}
bool DefEmitted = false;
+ bool DefIsPartial = false;
for (unsigned i = 1, e = MI.getNumOperands(); i < e; i += 2) {
MachineOperand &UseMO = MI.getOperand(i);
Register SrcReg = UseMO.getReg();
unsigned SubIdx = MI.getOperand(i+1).getImm();
// Nothing needs to be inserted for undef operands.
- if (UseMO.isUndef())
+ if (UseMO.isUndef()) {
+ DefIsPartial = true;
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perlfu wrote:
Yes, those should have already been handled.
https://github.com/llvm/llvm-project/pull/74431
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