[clang] [clang][CodeGen] Propagate pragma set fast-math flags to floating point builtins (PR #90377)

[Karl-Johan Karlsson via cfe-commits]

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+// RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple x86_64-linux-gnu -O3 -emit-llvm -disable-llvm-passes -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple x86_64-linux-gnu -O3 -fmath-errno -ffp-contract=on -fno-rounding-math -emit-llvm -disable-llvm-passes -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple x86_64-linux-gnu -ffast-math -ffp-contract=fast -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang -O3 -S -emit-llvm -Xclang -disable-llvm-passes %s -o - | FileCheck %s
+// RUN: %clang -O3 -ffp-model=fast -S -emit-llvm -Xclang -disable-llvm-passes %s -o - | FileCheck %s
+// RUN: %clang -O3 -ffp-model=precise -S -emit-llvm -Xclang -disable-llvm-passes %s -o - | FileCheck %s
+
+// Reproducer for issue #87758
+// The testcase below verifies that the "fast" flag are set on the calls.
+
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karka228 wrote:

Sure, I update the testcase with only those run lines.


https://github.com/llvm/llvm-project/pull/90377