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| author | bstarynk <bstarynk@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-05-21 10:43:55 +0000 |
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| committer | bstarynk <bstarynk@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-05-21 10:43:55 +0000 |
| commit | bd11046c067c9b3bbae45b2723d7bae0ccc99da2 (patch) | |
| tree | 651676cbef1c8e70dd0202c2989b2ef58678fcd8 /gcc/testsuite/gcc.dg/tree-ssa/vrp67.c | |
| parent | 0d8c07f78603884b20cb9fd6a07879d382565449 (diff) | |
| download | gcc-bd11046c067c9b3bbae45b2723d7bae0ccc99da2.tar.gz | |
2012-05-21 Basile Starynkevitch <basile@starynkevitch.net>
MELT branch merged with trunk rev 187704 using svnmerge
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/melt-branch@187706 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/vrp67.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/vrp67.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/vrp67.c b/gcc/testsuite/gcc.dg/tree-ssa/vrp67.c new file mode 100644 index 00000000000..f02d83780a6 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/vrp67.c @@ -0,0 +1,38 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-vrp1" } */ + +unsigned foo (unsigned i) +{ + if (i == 2) + { + i = i << 2; + if (i != 8) + link_error (); + } + return i; +} +unsigned bar (unsigned i) +{ + if (i == 1 << (sizeof (unsigned) * 8 - 1)) + { + i = i << 1; + if (i != 0) + link_error (); + } + return i; +} +unsigned baz (unsigned i) +{ + i = i & 15; + if (i == 0) + return 0; + i = 1000 - i; + i >>= 1; + i <<= 1; + if (i == 0) + link_error (); + return i; +} + +/* { dg-final { scan-tree-dump-times "Folding predicate" 3 "vrp1" } } */ +/* { dg-final { cleanup-tree-dump "vrp1" } } */ |