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| author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
|---|---|---|
| committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
| commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
| tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/gcc.dg/tree-ssa/pr21658.c | |
| download | cbb-gcc-4.6.4-15d2061ac0796199866debe9ac87130894b0cdd3.tar.bz2 cbb-gcc-4.6.4-15d2061ac0796199866debe9ac87130894b0cdd3.tar.xz | |
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Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/pr21658.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/pr21658.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr21658.c b/gcc/testsuite/gcc.dg/tree-ssa/pr21658.c new file mode 100644 index 000000000..c1a48c04b --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/pr21658.c @@ -0,0 +1,21 @@ +/* PR tree-optimization/21658 + CCP did not propagate an ADDR_EXPR far enough, preventing the "if" + statement below from being folded. */ + +/* { dg-do compile } */ +/* { dg-options "-O2 -fno-tree-dominator-opts -fdump-tree-ccp1-details" } */ + +void link_error (void); + +void +f (void) +{ + int a[10]; + int *p = &a[5]; + int *q = p - 1; + if (q != &a[4]) + link_error (); +} + +/* { dg-final { scan-tree-dump-times "Folded into: if " 1 "ccp1"} } */ +/* { dg-final { cleanup-tree-dump "ccp1" } } */ |