[clang] [Clang][CodeGen] Do not emit lifetime intrinsics for coro promise alloca (PR #140548)
Eli Friedman via cfe-commits
cfe-commits at lists.llvm.org
Mon May 19 12:53:10 PDT 2025
================
@@ -1343,6 +1343,11 @@ llvm::Value *CodeGenFunction::EmitLifetimeStart(llvm::TypeSize Size,
if (!ShouldEmitLifetimeMarkers)
return nullptr;
+ // No lifetimes on promise alloca, or middle end passes will assume promise
+ // dead after lifetime.end, leading to mis-optimization
+ if (Addr->getName() == "__promise")
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efriedma-quic wrote:
You can't use getName() like this: the name gets discarded in non-asserts builds.
https://github.com/llvm/llvm-project/pull/140548
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