From patchwork Sun Sep  2 08:57:12 2012
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Subject: [testsuite] : Add testcase for PR49206
From: Uros Bizjak <ubizjak@gmail.com>
X-Patchwork-Id: 181172
Message-Id: <CAFULd4aBmTTxckwi_veL3nTd=Arrb7L4Cs4n8YCEOrobO3151Q@mail.gmail.com>
To: gcc-patches@gcc.gnu.org
Date: Sun, 2 Sep 2012 10:57:12 +0200

Hello!

The testcase failed to compile with 4.6 with spill failure, but
compiles OK with 4.7+. I have backed-out the change that made the bug
latent, and the testcase still passed on mainline. This is maximum we
can do with the testcase at this point, so attached patch adds the
test to gcc testsuite, so the bug can be closed.

2012-09-02  Uros Bizjak  <ubizjak@gmail.com>

	PR target/49206
	* gcc.c-torture/compile/pr49206.c: New test.

Tested on x86_64-pc-linux-gnu {,-m32} and committed to mainline SVN.

Uros.


Index: gcc.c-torture/compile/pr49206.c
===================================================================
--- gcc.c-torture/compile/pr49206.c	(revision 0)
+++ gcc.c-torture/compile/pr49206.c	(working copy)
@@ -0,0 +1,26 @@
+struct S1
+{
+  short f0;
+};
+extern volatile struct S1 g_5;
+extern int g_120, i;
+extern short g_339;
+
+int
+func_72 (int x, int y, struct S1 z)
+{
+  for (z.f0 = -3; z.f0 > 16; z.f0 += 1)
+    foo ();
+  return g_120;
+}
+
+int
+main ()
+{
+  while (g_339 % 0x200003)
+    continue;
+  if (i)
+    func_72 (0, 0, g_5);
+  foo (&g_339);
+  return 0;
+}