re PR tree-optimization/20470 (Branching sequence generated for ABS(x-y))

2005-03-25  Pat Haugen  <pthaugen@us.ibm.com>

        PR tree-optimization/20470
        * gcc.dg/tree-ssa/pr20470.c: New test.

From-SVN: r97063

gcc/testsuite/ChangeLog

+2005-03-25  Pat Haugen  <pthaugen@us.ibm.com>
+
+	PR tree-optimization/20470
+	* gcc.dg/tree-ssa/pr20470.c: New test.
+
 2005-03-25  Geoffrey Keating  <geoffk@apple.com>
 
 	* gcc.dg/ppc-stfiwx.c: New.

gcc/testsuite/gcc.dg/tree-ssa/pr20470.c

+/* { dg-do compile } */
+/* { dg-options "-fdump-tree-generic" } */
+
+/* PR tree-optimization/20470:
+    Missing fold to abs(x) when x == MINUS_EXPR.  */
+#define abs(x)  ((x) >= 0 ? (x) : -(x))
+
+int i,j,k;
+void f1()
+{
+  i = abs(j-k);
+}
+
+/* { dg-final { scan-tree-dump-times "ABS_EXPR" 1 "generic" } } */