File: ssa-fre-9.c

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gcc-arm-none-eabi 15%3A7-2018-q2-5
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/* { dg-do compile } */
/* { dg-options "-O -fno-tree-sra -fdump-tree-fre1-stats" } */

union loc {
    unsigned reg;
    signed offset;
};
void __frame_state_for2 (volatile char *state_in)
{
    union loc fs;
    {
	*state_in = fs.reg;
	*state_in = fs.offset;
    }
}
void __frame_state_for1 (volatile char *state_in)
{
    union loc fs;
    for (;;)
    {
	*state_in = fs.offset;
	*state_in = fs.reg;
    }
}

/* { dg-final { scan-tree-dump-times "Eliminated: 2" 2 "fre1" } } */
/* { dg-final { scan-tree-dump-times "Insertions: 1" 2 "fre1" } } */