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Fix vrp68 testcase

Message ID alpine.LNX.2.00.1206191726090.28884@zhemvz.fhfr.qr
State New
Headers show

Commit Message

Richard Biener June 19, 2012, 3:26 p.m. UTC 
This fixes the testcase to match reality - and update the comments
appropriately in it.

Tested on x86_64-unknown-linux-gnu, applied.

Richard.

2012-06-19  Richard Guenther  <rguenther@suse.de>

	* gcc.dg/tree-ssa/vrp68.c: Adjust testcase.
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Patch

Index: gcc/testsuite/gcc.dg/tree-ssa/vrp68.c
===================================================================
--- gcc/testsuite/gcc.dg/tree-ssa/vrp68.c	(revision 188780)
+++ gcc/testsuite/gcc.dg/tree-ssa/vrp68.c	(working copy)
@@ -8,17 +8,11 @@  void test1 (int i, int j, int b)
   RANGE(i, 2, 6);
   ANTI_RANGE(j, 1, 7);
   MERGE(b, i, j);
-  CHECK_ANTI_RANGE(i, 7, 7);
   CHECK_ANTI_RANGE(i, 1, 1);
-  /* If we swap the anti-range tests the ~[6, 6] test is never eliminated.  */
 }
 int main() { }
 
-/* While subsequent VRP/DOM passes manage to even recognize the ~[6, 6]
-   test as redundant a single VRP run will arbitrarily choose ~[0, 0] when
-   merging [1, 5] with ~[0, 6] so the first VRP pass can only eliminate
-   the ~[0, 0] check as redundant.  */
+/* VRP will arbitrarily choose ~[1, 1] when merging [2, 6] with ~[1, 7].  */
 
-/* { dg-final { scan-tree-dump-times "link_error" 0 "vrp1" { xfail *-*-* } } } */
-/* { dg-final { scan-tree-dump-times "link_error" 1 "vrp1" } } */
+/* { dg-final { scan-tree-dump-times "link_error" 0 "vrp1" } } */
 /* { dg-final { cleanup-tree-dump "vrp1" } } */