================
@@ -3680,6 +3681,7 @@ bool SelectionDAGLegalize::ExpandNode(SDNode *Node) {
Results.push_back(Tmp1);
break;
}
+ case ISD::STACKADDRESS:
case ISD::STACKSAVE:
// Expand to CopyFromReg if the target set
// StackPointerRegisterToSaveRestore.
----------------
moorabbit wrote:
You're right, silently emitting an `UNDEF` node for `ISD::STACKADDRESS` and
`ISD::STACKSAVE` sounds like a bad idea.
> For STACKADDRESS that should probably result in a legalization error.
Is it possible to report a legalization error without crashing LLVM?
Should we simply issue a diagnostic for both `ISD::STACKADDRESS` and
`ISD:::STACKSAVE` in this case instead of silently emitting an UNDEF node?
Thx.
https://github.com/llvm/llvm-project/pull/148281
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