[clang] [C++23] [CLANG] Adding C++23 constexpr math functions: fmin and frexp. (PR #88978)

[Hubert Tong via cfe-commits]

================
@@ -0,0 +1,59 @@
+// RUN: %clang_cc1 -x c++ -triple x86_64-unknown-unknown -std=c++23 \
+// RUN: -DWIN -emit-llvm -o - %s | FileCheck %s --check-prefixes=WIN
+
+// RUN: %clang_cc1 -x c++ -triple x86_64-unknown-unknown -std=c++23 \
+// RUN: -emit-llvm -o - %s | FileCheck %s --check-prefixes=LNX
----------------
hubert-reinterpretcast wrote:

None of the `CHECK` lines were being checked...
```suggestion
// RUN: -DWIN -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,WIN

// RUN: %clang_cc1 -x c++ -triple x86_64-unknown-unknown -std=c++23 \
// RUN: -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,LNX
```

https://github.com/llvm/llvm-project/pull/88978