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/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-pre-stats" } */
union loc { unsigned reg; signed offset; };
void __frame_state_for (volatile char *state_in, int x)
{
/* We should move all the loads out of this loop. Right now, we only
move one. It takes two insertions because we insert a cast. */
union loc fs;
int reg;
for (;;) {
switch (x) {
case 0:
*state_in = fs.reg;
case 1:
*state_in = fs.offset;
}
}
}
/* This is a weird testcase. It should need PPRE to hoist the loop
invariants and the volatileness of state_in prevents DSE of the
first store. Thus, this is XFAILed. */
/* { dg-final { scan-tree-dump "Insertions: 2" "pre" { xfail *-*-* } } } */
/* { dg-final { cleanup-tree-dump "pre" } } */
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