clang/test/Sema/attr-noinline.cpp

   1 // RUN: %clang_cc1 -verify -fsyntax-only %s
   2
   3 int bar();
   4
   5 [[gnu::always_inline]] void always_inline_fn(void) { }
   6 [[gnu::flatten]] void flatten_fn(void) { }
   7
   8 [[gnu::noinline]] void noinline_fn(void) { }
   9
  10 void foo() {
  11   [[clang::noinline]] bar();
  12   [[clang::noinline(0)]] bar(); // expected-error {{'noinline' attribute takes no arguments}}
  13   int x;
  14   [[clang::noinline]] x = 0; // expected-warning {{'noinline' attribute is ignored because there exists no call expression inside the statement}}
  15   [[clang::noinline]] { asm("nop"); } // expected-warning {{'noinline' attribute is ignored because there exists no call expression inside the statement}}
  16   [[clang::noinline]] label: x = 1; // expected-warning {{'noinline' attribute only applies to functions and statements}}
  17
  18
  19   [[clang::noinline]] always_inline_fn(); // expected-warning {{statement attribute 'noinline' has higher precedence than function attribute 'always_inline'}}
  20   [[clang::noinline]] flatten_fn(); // expected-warning {{statement attribute 'noinline' has higher precedence than function attribute 'flatten'}}
  21   [[clang::noinline]] noinline_fn();
  22
  23   [[gnu::noinline]] bar(); // expected-warning {{attribute is ignored on this statement as it only applies to functions; use '[[clang::noinline]]' on statements}}
  24   __attribute__((noinline)) bar(); // expected-warning {{attribute is ignored on this statement as it only applies to functions; use '[[clang::noinline]]' on statements}}
  25 }
  26
  27 [[clang::noinline]] static int i = bar(); // expected-warning {{'noinline' attribute only applies to functions and statements}}