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[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [testsuite/] [gcc.dg/] [asm-b.c] - Rev 154
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/* { dg-do run { target powerpc*-*-* i?86-*-* x86_64-*-* } } */ /* { dg-options "-O1" } */ /* Test to make sure that inline-asm causes the tree optimizers to get the V_MAY_DEFs and clobber memory. */ /* Test from Jakub Jelinek, modified by Andrew Pinski to work on all powerpc targets. */ extern void abort (void); unsigned short v = 0x0300; void foo (unsigned short *p) { *p = v; } int bar (void) { unsigned short x; volatile unsigned short *z; foo (&x); const unsigned int y = x; z = &x; #if defined (__powerpc__) || defined (__PPC__) || defined (__ppc__) || defined (_POWER) || defined (__ppc64__) __asm __volatile ("sthbrx %1,0,%2" : "=m" (*z) : "r" (y), "r" (z)); #elif defined __i386__ || defined __x86_64__ __asm __volatile ("movb %b1,1(%2); movb %h1,(%2)" : "=m" (*z) : "r" (y), "r" (z)); #endif return (x & 1) == 0; } int main (void) { if (bar ()) abort (); return 0; }
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