diff options
| author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
|---|---|---|
| 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/vrp03.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/vrp03.c')
| -rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/vrp03.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/vrp03.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/vrp03.c new file mode 100644 index 000000000..9b7c08256 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/vrp03.c @@ -0,0 +1,35 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-vrp1" } */ + +struct A +{ + int a; + int b; +}; + +foo (struct A *p, struct A *q) +{ + int *r = 0; + + if (p) + { + if (p == q) + { + /* This should be folded to 'if (1)' because q is [p, p] + and p is ~[0, 0]. */ + if (q) + r = &q->a; + + /* This should be folded to 'if (1)' because q should be + ~[0, 0] and thus &q->a should be ~[0, 0]. */ + if (r) + return 5; + } + } + + return q->a; +} + +/* { dg-final { scan-tree-dump-times "Folding predicate q_.*to 1" 1 "vrp1" } } */ +/* { dg-final { scan-tree-dump-times "Folding predicate r_.*to 1" 1 "vrp1" } } */ +/* { dg-final { cleanup-tree-dump "vrp1" } } */ |