view gcc/testsuite/gcc.dg/tree-ssa/pr71947-4.c @ 131:84e7813d76e9

gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
parents 04ced10e8804
children
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line source

/* { dg-do compile } */
/* { dg-options "-O2 -fno-tree-vrp -fdump-tree-dom-details" } */



static inline long load(long *p)
{
        long ret;
        asm ("xyzzy      %1,%0\n\t" : "=r" (ret) : "m" (*p));
        if (ret != *p)
                __builtin_unreachable();
        return ret;
}

long foo(long *mem)
{
        long ret;
        ret = load(mem);
        return ret + *mem;
}

/* { dg-final { scan-tree-dump "Folded to: _\[0-9\]+ = _\[0-9\]+ \\* 2"  "dom2" } } */