re PR rtl-optimization/50764 (ICE: in maybe_record_trace_start, at…

re PR rtl-optimization/50764 (ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge)

2011-11-22  Tom de Vries  <tom@codesourcery.com>

	PR rtl-optimization/50764
	* gcc.dg/pr50764.c: New test.

From-SVN: r181640

gcc/testsuite/ChangeLog

+2011-11-22  Tom de Vries  <tom@codesourcery.com>
+
+	PR rtl-optimization/50764
+	* gcc.dg/pr50764.c: New test.
+
 2011-11-22  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/51265

gcc/testsuite/gcc.dg/pr50764.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -fsched2-use-superblocks -ftree-tail-merge" } */
+
+typedef int aligned __attribute__ ((aligned (64)));
+extern void abort (void);
+
+int bar (void *p);
+
+void
+foo (void)
+{
+  char *p = __builtin_alloca (13);
+  aligned i;
+
+  if (bar (p) || bar (&i))
+    abort ();
+}