derek.holloway
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77 lines
2.6 KiB
C
77 lines
2.6 KiB
C
// RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm -o - %s | FileCheck %s
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// precise mode
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -fmath-errno -ffp-contract=on \
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// RUN: -fno-rounding-math -emit-llvm -o - %s | FileCheck \
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// RUN: --check-prefix=CHECK-PRECISE %s
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// fast mode
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -ffast-math -ffp-contract=fast \
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// RUN: -emit-llvm -o - %s | FileCheck --check-prefix=CHECK-FAST %s
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// Reproducer for issue #87758
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// The testcase below verifies that the "fast" flag are set on the calls.
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float sqrtf(float x); // unary fp builtin
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float powf(float x, float y); // binary fp builtin
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float fmaf(float x, float y, float z); // ternary fp builtin
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char *rindex(const char *s, int c); // not a fp builtin
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#pragma float_control(push)
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#pragma float_control(precise, off)
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// CHECK: define dso_local float @fp_precise_off_libm_calls(
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// CHECK: call fast float @llvm.sqrt.f32(
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// CHECK: call fast float @llvm.pow.f32(
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// CHECK: call fast float @llvm.fma.f32(
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// CHECK: call ptr @rindex(
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// CHECK-PRECISE: define dso_local float @fp_precise_off_libm_calls(
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// CHECK-PRECISE: call fast float @sqrtf(
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// CHECK-PRECISE: call fast float @powf(
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// CHECK-PRECISE: call fast float @llvm.fma.f32(
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// CHECK-PRECISE: call ptr @rindex(
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// CHECK-FAST: define dso_local nofpclass(nan inf) float @fp_precise_off_libm_calls(
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// CHECK-FAST: call fast float @llvm.sqrt.f32(
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// CHECK-FAST: call fast float @llvm.pow.f32(
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// CHECK-FAST: call fast float @llvm.fma.f32(
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// CHECK-FAST: call ptr @rindex(
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float fp_precise_off_libm_calls(float a, float b, float c, const char *d, char *e, unsigned char f) {
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a = sqrtf(a);
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a = powf(a,b);
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a = fmaf(a,b,c);
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e = rindex(d, 75);
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return a;
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}
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#pragma float_control(pop)
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#pragma float_control(push)
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#pragma float_control(precise, on)
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// CHECK: define dso_local float @fp_precise_on_libm_calls(
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// CHECK: call float @sqrtf(
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// CHECK: call float @powf(
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// CHECK: call float @llvm.fma.f32(
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// CHECK: call ptr @rindex(
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// CHECK-PRECISE: define dso_local float @fp_precise_on_libm_calls(
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// CHECK-PRECISE: call float @sqrtf(
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// CHECK-PRECISE: call float @powf(
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// CHECK-PRECISE: call float @llvm.fma.f32(
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// CHECK-PRECISE: call ptr @rindex(
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// CHECK-FAST: define dso_local nofpclass(nan inf) float @fp_precise_on_libm_calls(
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// CHECK-FAST: call nofpclass(nan inf) float @sqrtf(
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// CHECK-FAST: call nofpclass(nan inf) float @powf(
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// CHECK-FAST: call float @llvm.fma.f32(
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// CHECK-FAST: call ptr @rindex(
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float fp_precise_on_libm_calls(float a, float b, float c, const char *d, char *e, unsigned char f) {
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a = sqrtf(a);
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a = powf(a,b);
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a = fmaf(a,b,c);
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e = rindex(d, 75);
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return a;
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}
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#pragma float_control(pop)
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