| /* { 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 *-*-* } } } */ |
