derek.holloway
7502bf64a4
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70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
// RUN: %clang_cc1 -triple x86_64-pc-linux -ast-print %s -o - | FileCheck %s
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float func_1(float x, float y) {
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#pragma STDC FENV_ACCESS ON
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if (x != 0) {
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return y;
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}
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return x + y;
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}
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// CHECK-LABEL: float func_1(float x, float y) {
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// CHECK-NEXT: #pragma STDC FENV_ACCESS ON
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// CHECK-NEXT: if (x != 0) {
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// CHECK-NEXT: return y;
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// CHECK-NEXT: }
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// CHECK-NEXT: return x + y;
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// CHECK-NEXT: }
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float func_2(float x, float y) {
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#pragma STDC FENV_ACCESS ON
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if (x != 0) {
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#pragma STDC FENV_ACCESS OFF
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return y;
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}
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return x + y;
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}
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// CHECK-LABEL: float func_2(float x, float y) {
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// CHECK-NEXT: #pragma STDC FENV_ACCESS ON
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// CHECK-NEXT: if (x != 0) {
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// CHECK-NEXT: #pragma STDC FENV_ACCESS OFF
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// CHECK-NEXT: return y;
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// CHECK-NEXT: }
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// CHECK-NEXT: return x + y;
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// CHECK-NEXT: }
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float func_3(float x, float y) {
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#pragma STDC FENV_ROUND FE_DOWNWARD
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return x + y;
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}
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// CHECK-LABEL: float func_3(float x, float y) {
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// CHECK-NEXT: #pragma STDC FENV_ROUND FE_DOWNWARD
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// CHECK-NEXT: return x + y;
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// CHECK-NEXT: }
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float func_4(float x, float y, float z) {
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#pragma STDC FENV_ACCESS ON
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#pragma clang fp exceptions(maytrap)
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#pragma STDC FENV_ROUND FE_UPWARD
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if (z != 0) {
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#pragma STDC FENV_ACCESS OFF
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#pragma STDC FENV_ROUND FE_TOWARDZERO
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return z + x;
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}
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return x + y;
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}
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// CHECK-LABEL: float func_4(float x, float y, float z) {
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// CHECK-NEXT: #pragma STDC FENV_ACCESS ON
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// CHECK-NEXT: #pragma clang fp exceptions(maytrap)
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// CHECK-NEXT: #pragma STDC FENV_ROUND FE_UPWARD
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// CHECK-NEXT: if (z != 0) {
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// CHECK-NEXT: #pragma STDC FENV_ACCESS OFF
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// CHECK-NEXT: #pragma STDC FENV_ROUND FE_TOWARDZERO
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// CHECK-NEXT: return z + x;
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// CHECK-NEXT: }
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// CHECK-NEXT: return x + y;
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// CHECK-NEXT: }
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