[clang] [clang] Load non-simple lvalue operands of __builtin_bit_cast (PR #231830)

[Hubert Tong via cfe-commits]

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@@ -0,0 +1,92 @@
+// RUN: %clang_cc1 -std=c++20 -fenable-matrix -emit-llvm -disable-llvm-passes -triple x86_64-unknown-linux-gnu %s -o - | FileCheck %s
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hubert-reinterpretcast wrote:

I would like to see the lifetime start and end markers for the temporary.
```suggestion
// RUN: %clang_cc1 -std=c++20 -fenable-matrix -O -emit-llvm -disable-llvm-passes -triple x86_64-unknown-linux-gnu %s -o - | FileCheck %s
```

https://github.com/llvm/llvm-project/pull/231830