llvm-project/clang/test/CodeGen/fp-strictfp-exp.cpp
Fangrui Song fd739804e0 [test] Add {{.*}} to make ELF tests immune to dso_local/dso_preemptable/(none) differences
For a default visibility external linkage definition, dso_local is set for ELF
-fno-pic/-fpie and COFF and Mach-O. Since default clang -cc1 for ELF is similar
to -fpic ("PIC Level" is not set), this nuance causes unneeded binary format differences.

To make emitted IR similar, ELF -cc1 -fpic will default to -fno-semantic-interposition,
which sets dso_local for default visibility external linkage definitions.

To make this flip smooth and enable future (dso_local as definition default),
this patch replaces (function) `define ` with `define{{.*}} `,
(variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} `.
2020-12-31 00:27:11 -08:00

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// RUN: %clang_cc1 -triple mips64-linux-gnu -fexperimental-strict-floating-point -frounding-math -ffp-exception-behavior=strict -O2 -emit-llvm -o - %s | FileCheck %s
// RUN: %clang_cc1 -triple mips64-linux-gnu -fexperimental-strict-floating-point -ffp-exception-behavior=strict -O2 -emit-llvm -o - %s | FileCheck %s
// RUN: %clang_cc1 -triple mips64-linux-gnu -fexperimental-strict-floating-point -frounding-math -O2 -emit-llvm -o - %s | FileCheck %s
//
// Verify that constrained intrinsics are used due to the experimental flag.
// As more targets gain support for constrained intrinsics the triple
// in this test will need to change.
float fp_precise_1(float a, float b, float c) {
// CHECK-LABEL: define{{.*}} float @_Z12fp_precise_1fff
// CHECK: %[[M:.+]] = tail call float @llvm.experimental.constrained.fmul.f32(float {{.*}}, float {{.*}}, metadata {{.*}})
// CHECK: tail call float @llvm.experimental.constrained.fadd.f32(float %[[M]], float %c, metadata {{.*}})
return a * b + c;
}