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comparison gcc/testsuite/gcc.dg/asm-b.c @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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68:561a7518be6b 111:04ced10e8804
1 /* { dg-do run { target powerpc*-*-* i?86-*-* x86_64-*-* } } */
2 /* { dg-options "-O1" } */
3 /* Test to make sure that inline-asm causes the tree optimizers to get the
4 V_MAY_DEFs and clobber memory. */
5 /* Test from Jakub Jelinek, modified by Andrew Pinski to work on all powerpc targets. */
6 extern void abort (void);
7
8 unsigned short v = 0x0300;
9
10 void
11 foo (unsigned short *p)
12 {
13 *p = v;
14 }
15
16 int
17 bar (void)
18 {
19 unsigned short x;
20 volatile unsigned short *z;
21 foo (&x);
22 const unsigned int y = x;
23 z = &x;
24 #if defined (__powerpc__) || defined (__PPC__) || defined (__ppc__) || defined (_POWER) || defined (__ppc64__) || defined (__ppc)
25 __asm __volatile ("sthbrx %1,0,%2" : "=m" (*z) : "r" (y), "r" (z));
26 #elif defined __i386__ || defined __x86_64__
27 __asm __volatile ("movb %b1,1(%2)\n\tmovb %h1,(%2)"
28 : "=m" (*z) : "Q" (y), "R" (z));
29 #endif
30 return (x & 1) == 0;
31 }
32
33 int
34 main (void)
35 {
36 if (bar ())
37 abort ();
38 return 0;
39 }