[llvm] [X86] Avoid crashing in PIC mode on narrowing to i8 followed by extension to i32 (PR #145965)
Matt Arsenault via llvm-commits
llvm-commits at lists.llvm.org
Fri Jun 27 07:51:07 PDT 2025
================
@@ -631,7 +631,8 @@ void InstrEmitter::EmitSubregNode(SDNode *Node, VRBaseMapType &VRBaseMap,
void
InstrEmitter::EmitCopyToRegClassNode(SDNode *Node,
VRBaseMapType &VRBaseMap) {
- Register VReg = getVR(Node->getOperand(0), VRBaseMap);
+ RegisterSDNode *R = dyn_cast<RegisterSDNode>(Node->getOperand(0));
+ unsigned VReg = R ? R->getReg() : getVR(Node->getOperand(0), VRBaseMap);
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arsenm wrote:
Still seems wrong. The value should already be in the map
https://github.com/llvm/llvm-project/pull/145965
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