Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-10.c @ 158:494b0b89df80 default tip
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author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Mon, 25 May 2020 18:13:55 +0900 |
parents | 04ced10e8804 |
children |
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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 *-*-* } } } */