40 lines
942 B
C
40 lines
942 B
C
/* { dg-do run { target powerpc*-*-* i?86-*-* x86_64-*-* } } */
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/* { dg-options "-O1" } */
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/* Test to make sure that inline-asm causes the tree optimizers to get the
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V_MAY_DEFs and clobber memory. */
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/* Test from Jakub Jelinek, modified by Andrew Pinski to work on all powerpc targets. */
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extern void abort (void);
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unsigned short v = 0x0300;
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void
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foo (unsigned short *p)
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{
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*p = v;
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}
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int
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bar (void)
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{
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unsigned short x;
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volatile unsigned short *z;
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foo (&x);
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const unsigned int y = x;
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z = &x;
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#if defined (__powerpc__) || defined (__PPC__) || defined (__ppc__) || defined (_POWER) || defined (__ppc64__) || defined (__ppc)
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__asm __volatile ("sthbrx %1,0,%2" : "=m" (*z) : "r" (y), "r" (z));
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#elif defined __i386__ || defined __x86_64__
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__asm __volatile ("movb %b1,1(%2)\n\tmovb %h1,(%2)"
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: "=m" (*z) : "Q" (y), "R" (z));
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#endif
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return (x & 1) == 0;
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}
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int
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main (void)
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{
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if (bar ())
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abort ();
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return 0;
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}
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