re PR rtl-optimization/55010 (Internal consistency failure : invalid rtl sharing found in the insn)

	PR rtl-optimization/55010
	* cse.c (fold_rtx) <RTX_COMPARE>: Call copy_rtx on folded_arg{0,1}
	before passing it to simplify_relational_operation.

	* gcc.dg/pr55010.c: New test.

From-SVN: r192760

gcc/ChangeLog

 2012-10-24  Jakub Jelinek  <jakub@redhat.com>
 
+	PR rtl-optimization/55010
+	* cse.c (fold_rtx) <RTX_COMPARE>: Call copy_rtx on folded_arg{0,1}
+	before passing it to simplify_relational_operation.
+
 	PR debug/54828
 	* gimple.h (is_gimple_sizepos): New inline function.
 	* gimplify.c (gimplify_one_sizepos): Use it.  Remove useless

gcc/cse.c

@@ -3461,9 +3461,10 @@ fold_rtx (rtx x, rtx insn)
 	}
 
       {
-	rtx op0 = const_arg0 ? const_arg0 : folded_arg0;
-	rtx op1 = const_arg1 ? const_arg1 : folded_arg1;
-        new_rtx = simplify_relational_operation (code, mode, mode_arg0, op0, op1);
+	rtx op0 = const_arg0 ? const_arg0 : copy_rtx (folded_arg0);
+	rtx op1 = const_arg1 ? const_arg1 : copy_rtx (folded_arg1);
+	new_rtx = simplify_relational_operation (code, mode, mode_arg0,
+						 op0, op1);
       }
       break;
 

gcc/testsuite/ChangeLog

 2012-10-24  Jakub Jelinek  <jakub@redhat.com>
 
+	PR rtl-optimization/55010
+	* gcc.dg/pr55010.c: New test.
+
 	PR debug/54828
 	* g++.dg/debug/pr54828.C: New test.
 

gcc/testsuite/gcc.dg/pr55010.c

+/* PR rtl-optimization/55010 */
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+/* { dg-additional-options "-march=i686" { target { { i?86-*-* x86_64-*-* } && ia32 } } } */
+
+long long int a;
+unsigned long long int b;
+
+void
+foo (void)
+{
+  a = (a < 0) / ((a -= b) ? b >= ((b = a) || 0) : 0);
+}