As noted in PR56900, the new vrp87 test does not work on some targets as
the code ultimately fed to vrp is dependent on BRANCH_COST.
I scanned all the backends for those which use the default BRANCH_COST,
which is known to perturb the code in a way that VRP can't see the
optimization opportunity. For each of those targets this patch simply
avoids running the test.
Spot checked v850 & m68k (default BRANCH_COST, should not run) and x86
(should run).
Installed as obvious.
JEff
commit 9613e7e3cf45587992a3aacc93e83591f5922b55
Author: Jeff Law <l...@redhat.com>
Date: Thu Apr 11 07:50:08 2013 -0600
* gcc.dg/tree-ssa/vrp87.c: Do not run test on various targets.
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 58447db..4b3310c 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2013-04-11 Jeff Law <l...@redhat.com>
+
+ * gcc.dg/tree-ssa/vrp87.c: Do not run test on various targets.
+
2013-04-11 Paolo Carlini <paolo.carl...@oracle.com>
PR c++/56913
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/vrp87.c
b/gcc/testsuite/gcc.dg/tree-ssa/vrp87.c
index 7feff81..c8e4571 100644
--- a/gcc/testsuite/gcc.dg/tree-ssa/vrp87.c
+++ b/gcc/testsuite/gcc.dg/tree-ssa/vrp87.c
@@ -1,4 +1,5 @@
-/* { dg-do compile } */
+/* { dg-do compile { target { ! "m68k*-*-* mmix*-*-* mep*-*-* bfin*-*-*
v850*-*-* picochip*-*-* moxie*-*-* cris*-*-* m32c*-*-* fr30*-*-* mcore*-*-*"} }
} */
+
/* { dg-options "-O2 -fdump-tree-vrp2-details -fdump-tree-cddce2-details" } */
struct bitmap_head_def;
