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authorMichael Matz <matz@suse.de>2009-11-27 15:35:50 +0000
committerMichael Matz <matz@gcc.gnu.org>2009-11-27 15:35:50 +0000
commit315adedaf3f2072b55095f101d7df04c39d4e3ae (patch)
tree75f1e805d2291b932c884eafc2b6f80e724af630 /gcc/testsuite/gcc.dg
parent67c330aec42b2b57cf42abc7ceb46865d51cd789 (diff)
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re PR rtl-optimization/42084 (Wrong result with -Os -fno-delete-null-pointer-checks)
PR rtl-optimization/42084 * cfgexpand.c (maybe_cleanup_end_of_block): Add new parameter, use it to stop walking. (expand_gimple_cond): Adjust call to above. testsuite/ * gcc.dg/pr42084.c: New test. From-SVN: r154709
Diffstat (limited to 'gcc/testsuite/gcc.dg')
-rw-r--r--gcc/testsuite/gcc.dg/pr42084.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr42084.c b/gcc/testsuite/gcc.dg/pr42084.c
new file mode 100644
index 0000000..d5aad96
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr42084.c
@@ -0,0 +1,22 @@
+/* { dg-do run } */
+/* { dg-options "-O1 -fno-delete-null-pointer-checks" } */
+extern void abort (void);
+int g = 0;
+static int __attribute__((noinline)) f (long long a, long long b)
+{
+ int cmp;
+ cmp = a > b;
+ if (&g == 0)
+ cmp-=2;
+ else
+ cmp++;
+ return cmp;
+}
+
+int main (void)
+{
+ int ret = f (2, 1);
+ if (ret != 2)
+ abort ();
+ return 0;
+}