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Rev 298 |
Rev 338 |
/* { dg-do compile } */
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/* { dg-do compile } */
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/* { dg-options "-O2 -fdump-tree-pre-stats" } */
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/* { dg-options "-O2 -fdump-tree-pre-stats" } */
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union loc { unsigned reg; signed offset; };
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union loc { unsigned reg; signed offset; };
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void __frame_state_for (volatile char *state_in, int x)
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void __frame_state_for (volatile char *state_in, int x)
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{
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{
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/* We should move all the loads out of this loop. Right now, we only
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/* We should move all the loads out of this loop. Right now, we only
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move one. It takes two insertions because we insert a cast. */
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move one. It takes two insertions because we insert a cast. */
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union loc fs;
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union loc fs;
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int reg;
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int reg;
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for (;;) {
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for (;;) {
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switch (x) {
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switch (x) {
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case 0:
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case 0:
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*state_in = fs.reg;
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*state_in = fs.reg;
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case 1:
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case 1:
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*state_in = fs.offset;
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*state_in = fs.offset;
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}
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}
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}
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}
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}
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}
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/* This is a weird testcase. It should need PPRE to hoist the loop
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/* This is a weird testcase. It should need PPRE to hoist the loop
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invariants and the volatileness of state_in prevents DSE of the
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invariants and the volatileness of state_in prevents DSE of the
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first store. Thus, this is XFAILed. */
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first store. Thus, this is XFAILed. */
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/* { dg-final { scan-tree-dump "Insertions: 2" "pre" { xfail *-*-* } } } */
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/* { dg-final { scan-tree-dump "Insertions: 2" "pre" { xfail *-*-* } } } */
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/* { dg-final { cleanup-tree-dump "pre" } } */
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/* { dg-final { cleanup-tree-dump "pre" } } */
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