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/alias-2.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 gcc/testsuite/gcc.dg/tree-ssa/alias-2.c (limited to 'gcc/testsuite/gcc.dg/tree-ssa/alias-2.c') diff --git a/gcc/testsuite/gcc.dg/tree-ssa/alias-2.c b/gcc/testsuite/gcc.dg/tree-ssa/alias-2.c new file mode 100644 index 000000000..ecd0fdc9f --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/alias-2.c @@ -0,0 +1,28 @@ +/* { dg-do compile { target { nonpic } } } */ +/* { dg-options "-O2 -fdump-tree-optimized" } */ +static int a; +int f; +void bar (void) __attribute__((noinline)); +void bar (void) +{ + f = 9; +} + +void link_error (); + +int foo() +{ + int b, c; + a = 5; + b = a; + bar (); + b = b + a; + if (b != 10) + link_error (); + return b; +} + +/* We should have removed the link_error on the tree level as GCC can tell that + a is not touched by the calling bar at all. */ +/* { dg-final { scan-tree-dump-times "link_error" 0 "optimized"} } */ +/* { dg-final { cleanup-tree-dump "optimized" } } */ -- cgit v1.2.3