[committed] Add testcase for already fixed issue (PR rtl-optimization/81595)

Message ID 20171208190739.GC2353@tucnak
State New
Headers show
Series
  • [committed] Add testcase for already fixed issue (PR rtl-optimization/81595)
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Commit Message

Jakub Jelinek Dec. 8, 2017, 7:07 p.m.
Hi!

This bug has been already fixed by Eric in r254188.
Regtested on x86_64-linux -m64/-m32, verified it FAILs with the patch reverted
on both, committed to trunk as obvious.

2017-12-08  Jakub Jelinek  <jakub@redhat.com>

	PR rtl-optimization/81595
	* gcc.c-torture/compile/pr81595.c: New test.


	Jakub

Patch

--- gcc/testsuite/gcc.c-torture/compile/pr81595.c.jj	2017-12-08 20:02:05.823795057 +0100
+++ gcc/testsuite/gcc.c-torture/compile/pr81595.c	2017-12-08 20:00:05.000000000 +0100
@@ -0,0 +1,39 @@ 
+/* PR rtl-optimization/81595 */
+
+void
+foo (__INTPTR_TYPE__ *x, int *y, int *z, int u, int v)
+{
+  while (u != 0)
+    {
+      if (*x != 0)
+	{
+	  int a = 1;
+ l1:
+	  if (*y != 0)
+	    {
+	      while (a < 2)
+		{
+		  a = 0;
+		  x = (__INTPTR_TYPE__ *)&x;
+ l2:
+		  ++a;
+		}
+	      while (*z != 0)
+		;
+	    }
+	  a /= 0;
+	}
+      else
+	{
+	  *z /= (*z != 0) ? 2 : 0;
+	  while (v < 1)
+	    {
+	      *y = 0;
+	      if (v != 0)
+		goto l1;
+	      ++v;
+	    }
+	  goto l2;
+	}
+    }
+}