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/pr21294.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 gcc/testsuite/gcc.dg/tree-ssa/pr21294.c (limited to 'gcc/testsuite/gcc.dg/tree-ssa/pr21294.c') diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr21294.c b/gcc/testsuite/gcc.dg/tree-ssa/pr21294.c new file mode 100644 index 000000000..567e6366a --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/pr21294.c @@ -0,0 +1,23 @@ +/* PR tree-optimization/21294 + VRP did not notice that an address of the form &p->i is nonnull + when p is known to be nonnull. In this testcase, noticing that + allows us to eliminate the second "if" statement. */ + +/* { dg-do compile } */ +/* { dg-options "-O2 -fno-tree-dominator-opts -fdump-tree-vrp1-details" } */ + +struct f { + int i; +}; + +int +foo (struct f *p) +{ + if (p != 0) + if (&p->i != 0) + return 123; + return 0; +} + +/* { dg-final { scan-tree-dump-times "Folding predicate" 1 "vrp1"} } */ +/* { dg-final { cleanup-tree-dump "vrp1" } } */ -- cgit v1.2.3