[llvm] CallPromotionUtils: Correctly use IndexSize when determining the bit width of pointer offsets. (PR #119138)

[Owen Anderson via llvm-commits]

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@@ -712,7 +712,7 @@ bool llvm::tryPromoteCall(CallBase &CB) {
       VTablePtrLoad, VTablePtrLoad->getParent(), BBI, 0, nullptr, nullptr);
   if (!VTablePtr)
     return false; // No vtable found.
-  APInt VTableOffsetGVBase(DL.getTypeSizeInBits(VTablePtr->getType()), 0);
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resistor wrote:

Thanks. I'm doing a bootstrap build now to try to extract a test case. I'll put up a new PR with the test and the fix once I have that.

https://github.com/llvm/llvm-project/pull/119138