derek.holloway
7502bf64a4
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76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
// REQUIRES: arm-registered-target
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// RUN: %clang_cc1 -triple arm-unknown-linux-gnueabi -emit-llvm -o - %s | FileCheck %s
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int printf(const char *, ...);
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void exit(int);
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float frexpf(float, int*);
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double frexp(double, int*);
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long double frexpl(long double, int*);
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// CHECK: declare i32 @printf(ptr noundef, ...)
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void f0() {
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printf("a\n");
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}
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// CHECK: call void @exit
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// CHECK: unreachable
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void f1() {
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exit(1);
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}
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// CHECK: call ptr @strstr{{.*}} [[NUW:#[0-9]+]]
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char* f2(char* a, char* b) {
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return __builtin_strstr(a, b);
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}
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// Note: Use asm label to disable intrinsic lowering of modf.
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double modf(double x, double*) asm("modf");
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float modff(float x, float*) asm("modff");
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long double modfl(long double x, long double*) asm("modfl");
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// frexp is NOT readnone. It writes to its pointer argument.
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//
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// CHECK: f3
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// CHECK: call double @frexp(double noundef %
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// CHECK-NOT: readnone
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// CHECK: call float @frexpf(float noundef %
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// CHECK-NOT: readnone
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// CHECK: call double @frexpl(double noundef %
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// CHECK-NOT: readnone
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//
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// Same thing for modf and friends.
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//
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// CHECK: call double @modf(double noundef %
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// CHECK-NOT: readnone
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// CHECK: call float @modff(float noundef %
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// CHECK-NOT: readnone
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// CHECK: call double @modfl(double noundef %
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// CHECK-NOT: readnone
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//
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// CHECK: call double @remquo(double noundef %
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// CHECK-NOT: readnone
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// CHECK: call float @remquof(float noundef %
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// CHECK-NOT: readnone
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// CHECK: call double @remquol(double noundef %
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// CHECK-NOT: readnone
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// CHECK: ret
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int f3(double x) {
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int e;
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float f;
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double d;
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long double ld;
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frexp(x, &e);
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frexpf(x, &e);
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frexpl(x, &e);
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modf(x, &d);
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modff(x, &f);
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modfl(x, &ld);
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__builtin_remquo(x, x, &e);
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__builtin_remquof(x, x, &e);
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__builtin_remquol(x, x, &e);
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return e;
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}
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// CHECK: attributes [[NUW]] = { nounwind{{.*}} }
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