[clang] [compiler-rt] [llvm] [ASan] Add metadata to renamed instructions so ASan doesn't use the i… (PR #119387)

[Eli Friedman via cfe-commits]

================
@@ -137,6 +137,10 @@ llvm::AllocaInst 
*CodeGenFunction::CreateTempAlloca(llvm::Type *Ty,
     Alloca =
         new llvm::AllocaInst(Ty, CGM.getDataLayout().getAllocaAddrSpace(),
                              ArraySize, Name, AllocaInsertPt->getIterator());
+  if (Alloca->getName() != Name.str() &&
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efriedma-quic wrote:

Yes, something like that.

I don't think llvm-compile-time-tracker tracks compile time with asan enabled, 
so I can't see how this change could have any effect either way.

https://github.com/llvm/llvm-project/pull/119387
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