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[committed] Increaes MIPS branch cost for gcc.dg/pr46309.c

Message ID 87vcoutl3d.fsf@firetop.home
State New
Headers show

Commit Message

Richard Sandiford Jan. 2, 2012, 11:11 a.m. UTC 
As Jakub says in the PR, the fix for PR 46309 indirectly depends on
BRANCH_COST, and the PR is still open because of that.  For the time
being, it seems better to avoid the failure for MIPS targets by
tuning for a processor with a high branch cost.

Tested on mips64-linux-gnu and applied.

Richard


gcc/testsuite/
	* gcc.dg/pr46309.c: Add -mtune=octeon2 for MIPS.
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Patch

Index: gcc/testsuite/gcc.dg/pr46309.c
===================================================================
--- gcc/testsuite/gcc.dg/pr46309.c	2011-12-31 11:12:38.000000000 +0000
+++ gcc/testsuite/gcc.dg/pr46309.c	2011-12-31 11:14:19.000000000 +0000
@@ -1,6 +1,9 @@ 
 /* PR tree-optimization/46309 */
 /* { dg-do compile } */
 /* { dg-options "-O2 -fdump-tree-reassoc-details" } */
+/* The transformation depends on BRANCH_COST being greater than 1
+   (see the notes in the PR), so try to force that.  */
+/* { dg-additional-options "-mtune=octeon2" { target mips*-*-* } } */
 
 int
 f1 (int a)