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/alias-10.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 gcc/testsuite/gcc.dg/alias-10.c (limited to 'gcc/testsuite/gcc.dg/alias-10.c') diff --git a/gcc/testsuite/gcc.dg/alias-10.c b/gcc/testsuite/gcc.dg/alias-10.c new file mode 100644 index 000000000..6e9cb3f3c --- /dev/null +++ b/gcc/testsuite/gcc.dg/alias-10.c @@ -0,0 +1,32 @@ +/* For PR tree-optimization/14784 */ + +/* { dg-do compile } */ +/* { dg-options "-O2 -funswitch-loops -fdump-tree-unswitch-details" } */ + +typedef struct bitmap_element_def +{ + unsigned int indx; +} bitmap_element; + +typedef struct bitmap_head_def { + bitmap_element *first; + int using_obstack; +} bitmap_head; +typedef struct bitmap_head_def *bitmap; + +bitmap_element *bitmap_free; + +void foo (bitmap head, bitmap_element *elt) +{ + while (1) + { + /* Alias analysis problems used to prevent us from recognizing + that this condition is invariant. */ + if (head->using_obstack) + bitmap_free = elt; + } +} + + +/* { dg-final { scan-tree-dump-times "Unswitching" 1 "unswitch"} } */ +/* { dg-final { cleanup-tree-dump "unswitch" } } */ -- cgit v1.2.3