clang/test/Parser/asm-qualifiers.c

   1 // RUN: %clang_cc1 -triple x86_64-linux-gnu -fsyntax-only -verify %s
   2
   3 void qualifiers(void) {
   4   asm("");
   5   asm volatile("");
   6   asm inline("");
   7   asm goto("" ::::foo);
   8 foo:;
   9 }
  10
  11 void unknown_qualifiers(void) {
  12   asm noodle(""); // expected-error {{expected 'volatile', 'inline', 'goto', or '('}}
  13   asm goto noodle("" ::::foo); // expected-error {{expected 'volatile', 'inline', 'goto', or '('}}
  14   asm volatile noodle inline(""); // expected-error {{expected 'volatile', 'inline', 'goto', or '('}}
  15 foo:;
  16 }
  17
  18 void underscores(void) {
  19   __asm__("");
  20   __asm__ __volatile__("");
  21   __asm__ __inline__("");
  22   // Note: goto is not supported with underscore prefix+suffix.
  23   __asm__ goto("" ::::foo);
  24 foo:;
  25 }
  26
  27 void permutations(void) {
  28   asm goto inline volatile("" ::::foo);
  29   asm goto inline("");
  30   asm goto volatile inline("" ::::foo);
  31   asm goto volatile("");
  32   asm inline goto volatile("" ::::foo);
  33   asm inline goto("" ::::foo);
  34   asm inline volatile goto("" ::::foo);
  35   asm inline volatile("");
  36   asm volatile goto("" ::::foo);
  37   asm volatile inline goto("" ::::foo);
  38   asm volatile inline("");
  39 foo:;
  40 }
  41
  42 void duplicates(void) {
  43   asm volatile volatile("");             // expected-error {{duplicate asm qualifier 'volatile'}}
  44   __asm__ __volatile__ __volatile__(""); // expected-error {{duplicate asm qualifier 'volatile'}}
  45   asm inline inline("");                 // expected-error {{duplicate asm qualifier 'inline'}}
  46   __asm__ __inline__ __inline__("");     // expected-error {{duplicate asm qualifier 'inline'}}
  47   asm goto goto("" ::::foo);             // expected-error {{duplicate asm qualifier 'goto'}}
  48   __asm__ goto goto("" ::::foo);         // expected-error {{duplicate asm qualifier 'goto'}}
  49 foo:;
  50 }
  51
  52 // globals
  53 asm ("");
  54 asm volatile (""); // expected-error {{meaningless 'volatile' on asm outside function}}
  55 asm inline (""); // expected-error {{meaningless 'inline' on asm outside function}}
  56 asm goto (""::::noodle); // expected-error {{meaningless 'goto' on asm outside function}}
  57 // expected-error@-1 {{expected ')'}}
  58 // expected-note@-2 {{to match this '('}}