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// REQUIRES: arm-registered-target
// RUN: %clang_cc1 -no-opaque-pointers -triple arm-unknown-linux-gnueabi -emit-llvm -o - %s | FileCheck %s
int printf(const char *, ...);
void exit(int);
// CHECK: declare i32 @printf(i8* noundef, ...)
void f0() {
printf("a\n");
}
// CHECK: call void @exit
// CHECK: unreachable
void f1() {
exit(1);
}
// CHECK: call i8* @strstr{{.*}} [[NUW:#[0-9]+]]
char* f2(char* a, char* b) {
return __builtin_strstr(a, b);
}
// frexp is NOT readnone. It writes to its pointer argument.
// <rdar://problem/10070234>
//
// CHECK: f3
// CHECK: call double @frexp(double noundef %
// CHECK-NOT: readnone
// CHECK: call float @frexpf(float noundef %
// CHECK-NOT: readnone
// CHECK: call double @frexpl(double noundef %
// CHECK-NOT: readnone
//
// Same thing for modf and friends.
//
// CHECK: call double @modf(double noundef %
// CHECK-NOT: readnone
// CHECK: call float @modff(float noundef %
// CHECK-NOT: readnone
// CHECK: call double @modfl(double noundef %
// CHECK-NOT: readnone
//
// CHECK: call double @remquo(double noundef %
// CHECK-NOT: readnone
// CHECK: call float @remquof(float noundef %
// CHECK-NOT: readnone
// CHECK: call double @remquol(double noundef %
// CHECK-NOT: readnone
// CHECK: ret
int f3(double x) {
int e;
__builtin_frexp(x, &e);
__builtin_frexpf(x, &e);
__builtin_frexpl(x, &e);
__builtin_modf(x, &e);
__builtin_modff(x, &e);
__builtin_modfl(x, &e);
__builtin_remquo(x, x, &e);
__builtin_remquof(x, x, &e);
__builtin_remquol(x, x, &e);
return e;
}
// CHECK: attributes [[NUW]] = { nounwind{{.*}} }
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