attr-noinline.c

this is a gcc file, you can download it and learn its usetility, for further detail please look at t

/* { dg-do compile } */
/* { dg-options "-O2 -finline-functions" } */

static inline void __attribute__((__noinline__)) function_definition(void) {} /* { dg-warning "inline function \[^\n\]* given attribute noinline" "" } */

static inline void __attribute__((__noinline__)) function_declaration_both_before(void); /* { dg-warning "inline function \[^\n\]* given attribute noinline" "" } */

static void function_declaration_both_before(void) {}

static void function_declaration_both_after(void);

static inline void __attribute__((__noinline__)) function_declaration_both_after(void); /* { dg-warning "(inline function \[^\n\]* given attribute noinline|declared inline after its definition)" "" } */

static void function_declaration_both_after(void) {}

static void function_declaration_noinline_before(void) __attribute__((__noinline__)); /* { dg-warning "previous declaration \[^\n\]* with attribute noinline" "" } */

static inline void function_declaration_noinline_before(void) {} /* { dg-warning "function \[^\n\]* redeclared as inline" "" } */

static inline void function_declaration_noinline_after(void) {} /* { dg-warning "previous declaration \[^\n\]* was inline" "" } */

static void function_declaration_noinline_after(void) __attribute__((__noinline__)); /* { dg-warning "function \[^\n\]* redeclared with attribute noinline" "" } */

static inline void function_declaration_inline_before(void); /* { dg-warning "previous declaration \[^\n\]* was inline" "" } */

static void __attribute__((__noinline__)) function_declaration_inline_before(void) {} /* { dg-warning "function \[^\n\]* redeclared with attribute noinline" "" } */

static inline void function_declaration_inline_noinline_before(void); /* { dg-warning "previous declaration \[^\n\]* was inline" "" } */

static void function_declaration_inline_noinline_before(void) __attribute__((__noinline__)); /* { dg-warning "function \[^\n\]* redeclared with attribute noinline" "" } */

static void function_declaration_inline_noinline_before(void) {}

static inline void function_declaration_inline_noinline_after(void);

static void function_declaration_inline_noinline_after(void) {} /* { dg-warning "previous declaration \[^\n\]* was inline" "" } */

static void function_declaration_inline_noinline_after(void) __attribute__((__noinline__)); /* { dg-warning "function \[^\n\]* redeclared with attribute noinline" "" } */

static void function_declaration_noinline_inline_before(void) __attribute__((__noinline__)); /* { dg-warning "previous declaration\[^\n\]* with attribute noinline" "" } */

static inline void function_declaration_noinline_inline_before(void); /* { dg-warning "function \[^\n\]* redeclared as inline" "" } */

static void function_declaration_noinline_inline_before(void) {}

void f () {
  function_definition ();
  function_declaration_both_before ();
  function_declaration_both_after ();
  function_declaration_noinline_before ();
  function_declaration_noinline_after ();
  function_declaration_inline_before ();
  function_declaration_inline_noinline_before ();
  function_declaration_inline_noinline_after ();
  function_declaration_noinline_inline_before ();
}

/* { dg-final { scan-assembler "function_definition" } } */
/* { dg-final { scan-assembler "function_declaration_both_before" } } */
/* { dg-final { scan-assembler "function_declaration_both_after" } } */
/* { dg-final { scan-assembler "function_declaration_noinline_before" } } */
/* { dg-final { scan-assembler "function_declaration_noinline_after" } } */
/* { dg-final { scan-assembler "function_declaration_inline_before" } } */
/* { dg-final { scan-assembler "function_declaration_inline_noinline_before" } } */
/* { dg-final { scan-assembler "function_declaration_inline_noinline_after" } } */
/* { dg-final { scan-assembler "function_declaration_noinline_inline_before" } } */