================
@@ -0,0 +1,76 @@
+// RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm -o - %s | FileCheck %s
+
+// precise mode
+// RUN: %clang_cc1 -triple x86_64-linux-gnu -fmath-errno -ffp-contract=on \
+// RUN: -fno-rounding-math -emit-llvm -o - %s | FileCheck \
+// RUN: --check-prefix=CHECK-PRECISE %s
+
+// fast mode
+// RUN: %clang_cc1 -triple x86_64-linux-gnu -ffast-math -ffp-contract=fast \
+// RUN: -emit-llvm -o - %s | FileCheck --check-prefix=CHECK-FAST %s
+
+// Reproducer for issue #87758
+// The testcase below verifies that the "fast" flag are set on the calls.
+
+float sqrtf(float x); // unary fp builtin
+float powf(float x, float y); // binary fp builtin
+float fmaf(float x, float y, float z); // ternary fp builtin
+char *rindex(const char *s, int c); // not a fp builtin
+
+#pragma float_control(push)
+#pragma float_control(precise, off)
+// CHECK: define dso_local float @fp_precise_off_libm_calls(
+// CHECK: %{{.*}} = call fast float @llvm.sqrt.f32(
----------------
zahiraam wrote:
Do we need the %{{.*}} = before these calls?
https://github.com/llvm/llvm-project/pull/90377
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