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author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
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committer | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
commit | 1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch) | |
tree | c607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pr22026.c | |
parent | 283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff) | |
download | toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.gz toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.bz2 toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.zip |
Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pr22026.c')
-rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pr22026.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pr22026.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pr22026.c new file mode 100644 index 000000000..7e6914d9d --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pr22026.c @@ -0,0 +1,49 @@ +/* PR tree-optimization/22026 + VRP used think that ~[0,0] + ~[0,0] = ~[0,0], which is wrong. The + same applies to subtraction and unsigned multiplication. */ + +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-vrp1" } */ + +int +plus (int x, int y) +{ + if (x != 0) + if (y != 0) + { + int z = x + y; + if (z != 0) + return 1; + } + return 0; +} + +int +minus (int x, int y) +{ + if (x != 0) + if (y != 0) + { + int z = x - y; + if (z != 0) + return 1; + } + return 0; +} + +int +mult (unsigned x, unsigned y) +{ + if (x != 0) + if (y != 0) + { + unsigned z = x * y; + if (z != 0) + return 1; + } + return 0; +} + +/* None of the predicates can be folded in these functions. */ +/* { dg-final { scan-tree-dump-times "Folding predicate" 0 "vrp1" } } */ +/* { dg-final { cleanup-tree-dump "vrp1" } } */ |