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0237f1b998
Just follow along with the reassociate pragma. This allows locally setting the arcp fast math flag. Previously you could only access this through the global -freciprocal-math. Fixes #64798
89 lines
3.7 KiB
C
89 lines
3.7 KiB
C
// RUN: not %clang_cc1 -fexperimental-strict-floating-point \
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// RUN: -triple x86_64-linux-gnu \
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// RUN: -verify %s 2>&1 | FileCheck %s --check-prefixes=CHECK-PRGM
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// RUN: not %clang_cc1 -fexperimental-strict-floating-point \
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// RUN: -triple x86_64-linux-gnu -freciprocal-math \
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// RUN: -verify %s 2>&1 | FileCheck %s --check-prefixes=CHECK-RECPR,CHECK-PRGM
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// RUN: not %clang_cc1 -fexperimental-strict-floating-point \
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// RUN: -triple x86_64-linux-gnu -mreassociate \
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// RUN: -verify %s 2>&1 | FileCheck %s --check-prefixes=CHECK-ASSOC,CHECK-PRGM
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// RUN: not %clang_cc1 -fexperimental-strict-floating-point \
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// RUN: -triple x86_64-linux-gnu -fapprox-func \
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// RUN: -verify %s 2>&1 | FileCheck %s --check-prefixes=CHECK-FUNC,CHECK-PRGM
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// RUN: not %clang_cc1 -fexperimental-strict-floating-point \
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// RUN: -triple x86_64-linux-gnu -freciprocal-math -mreassociate -verify \
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// RUN: %s 2>&1 | FileCheck %s --check-prefixes=CHECK-ASSOC,CHECK-RECPR,CHECK-PRGM
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// RUN: not %clang_cc1 -fexperimental-strict-floating-point \
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// RUN: -triple x86_64-linux-gnu -freciprocal-math -mreassociate -fapprox-func \
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// RUN: -verify %s 2>&1 \
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// RUN: | FileCheck %s --check-prefixes=CHECK-FUNC,CHECK-ASSOC,CHECK-RECPR,CHECK-PRGM
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// RUN: not %clang_cc1 -fexperimental-strict-floating-point \
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// RUN: -triple x86_64-linux-gnu -ffp-eval-method=source \
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// RUN: -verify %s 2>&1 | FileCheck %s --check-prefixes=CHECK-FFP-OPT,CHECK-PRGM
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// expected-no-diagnostics
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float f1(float a, float b, float c) {
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a = b + c;
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return a * b + c;
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}
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float f2(float a, float b, float c) {
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// CHECK-FFP-OPT: option 'ffp-eval-method' cannot be used with '#pragma clang fp reassociate'
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#pragma clang fp reassociate(on)
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return (a + b) + c;
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}
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float f3(float a, float b, float c) {
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#pragma clang fp reassociate(off)
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return (a - b) - c;
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}
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float f4(float a, float b, float c) {
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#pragma clang fp eval_method(double)
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// CHECK-FUNC: '#pragma clang fp eval_method' cannot be used with option 'fapprox-func'
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// CHECK-ASSOC: '#pragma clang fp eval_method' cannot be used with option 'mreassociate'
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// CHECK-RECPR: '#pragma clang fp eval_method' cannot be used with option 'freciprocal'
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// CHECK-PRGM: '#pragma clang fp eval_method' cannot be used with '#pragma clang fp reassociate'
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#pragma clang fp reassociate(on)
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return (a * c) - (b * c);
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}
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float f4_reciprocal(float a, float b, float c) {
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#pragma clang fp eval_method(double)
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// CHECK-FUNC: '#pragma clang fp eval_method' cannot be used with option 'fapprox-func'
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// CHECK-ASSOC: '#pragma clang fp eval_method' cannot be used with option 'mreassociate'
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// CHECK-RECPR: '#pragma clang fp eval_method' cannot be used with option 'freciprocal'
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// CHECK-PRGM: '#pragma clang fp eval_method' cannot be used with '#pragma clang fp reciprocal'
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#pragma clang fp reciprocal(on)
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return (a * c) / (b * c);
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}
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float f4_reciprocal_reassociate(float a, float b, float c) {
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#pragma clang fp eval_method(double)
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// CHECK-FUNC: '#pragma clang fp eval_method' cannot be used with option 'fapprox-func'
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// CHECK-ASSOC: '#pragma clang fp eval_method' cannot be used with option 'mreassociate'
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// CHECK-RECPR: '#pragma clang fp eval_method' cannot be used with option 'freciprocal'
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// CHECK-PRGM: '#pragma clang fp eval_method' cannot be used with '#pragma clang fp reassociate'
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// CHECK-PRGM: '#pragma clang fp eval_method' cannot be used with '#pragma clang fp reciprocal'
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#pragma clang fp reciprocal(on) reassociate(on)
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return (a * c) / (b * c);
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}
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float f2_reciprocal(float a, float b, float c) {
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// CHECK-FFP-OPT: option 'ffp-eval-method' cannot be used with '#pragma clang fp reciprocal'
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#pragma clang fp reciprocal(on)
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return (a + b) / c;
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}
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float f3_reciprocal(float a, float b, float c) {
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#pragma clang fp reciprocal(off)
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return (a - b) / c;
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}
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