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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/struct-aliasing-2.c | |
| download | cbb-gcc-4.6.4-upstream.tar.bz2 cbb-gcc-4.6.4-upstream.tar.xz | |
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Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/struct-aliasing-2.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/struct-aliasing-2.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/struct-aliasing-2.c b/gcc/testsuite/gcc.dg/tree-ssa/struct-aliasing-2.c new file mode 100644 index 000000000..5acf083c7 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/struct-aliasing-2.c @@ -0,0 +1,19 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-fre" } */ + +struct S { unsigned f; }; + +int +foo ( struct S *p) +{ + int *q = (int *)&p->f; + int i = *q; + return i + p->f; +} + + +/* There should only be one load of p->f because fwprop can change + *(int *)&p->f into just (int)p->f. */ +/* { dg-final { scan-tree-dump-times "= \[^\n\]*p_.\\\(D\\\)" 1 "fre" } } */ +/* { dg-final { cleanup-tree-dump "fre" } } */ + |