Mercurial > hg > CbC > CbC_gcc
comparison gcc/testsuite/gcc.dg/tree-ssa/pr87126.c @ 131:84e7813d76e9
gcc-8.2
| author | mir3636 |
|---|---|
| date | Thu, 25 Oct 2018 07:37:49 +0900 |
| parents | |
| children |
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| 111:04ced10e8804 | 131:84e7813d76e9 |
|---|---|
| 1 /* { dg-do compile } */ | |
| 2 /* { dg-options "-O2 -fdump-tree-fre1" } */ | |
| 3 | |
| 4 int a, *b; | |
| 5 | |
| 6 void f () | |
| 7 { | |
| 8 int d = 0, e = d; | |
| 9 while (a++) | |
| 10 ; | |
| 11 if (e) | |
| 12 goto L2; | |
| 13 L1: | |
| 14 d = e; | |
| 15 b = &d; | |
| 16 L2: | |
| 17 if (d) | |
| 18 goto L1; | |
| 19 } | |
| 20 | |
| 21 /* The load of d could be eliminated if we'd value-number the | |
| 22 irreducible region in RPO of the reducible result. Likewise | |
| 23 a redundant store could be removed. */ | |
| 24 /* { dg-final { scan-tree-dump-times "d = 0;" 1 "fre1" { xfail *-*-* } } } */ | |
| 25 /* { dg-final { scan-tree-dump-not " = d;" "fre1" { xfail *-*-* } } } */ |