llvm-project/clang/test/CodeGen/attributes.c

// RUN: clang -emit-llvm < %s | grep 't1.*noreturn'
void t1() __attribute__((noreturn));
void t1() {}

// RUN: clang -emit-llvm < %s | grep 't2.*nounwind'
void t2() __attribute__((nothrow));
void t2() {}

// RUN: clang -emit-llvm < %s | grep 'weak.*t3'
void t3() __attribute__((weak));
void t3() {}

// RUN: clang -emit-llvm < %s | grep 'hidden.*t4'
void t4() __attribute__((visibility("hidden")));
void t4() {}

// RUN: clang -emit-llvm < %s | grep 't5.*weak'
int t5 __attribute__((weak)) = 2;

// RUN: clang -emit-llvm < %s | grep 't6.*protected'
int t6 __attribute__((visibility("protected")));

// RUN: clang -emit-llvm < %s | grep 't7.*noreturn'
// RUN: clang -emit-llvm < %s | grep 't7.*nounwind'
void t7() __attribute__((noreturn, nothrow));
void t7() {}