From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/testsuite/gcc.dg/tree-ssa/vrp03.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 gcc/testsuite/gcc.dg/tree-ssa/vrp03.c (limited to 'gcc/testsuite/gcc.dg/tree-ssa/vrp03.c') diff --git a/gcc/testsuite/gcc.dg/tree-ssa/vrp03.c b/gcc/testsuite/gcc.dg/tree-ssa/vrp03.c new file mode 100644 index 000000000..9b7c08256 --- /dev/null +++ b/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" } } */ -- cgit v1.2.3