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From d51320157aee7ce2a4e2478c8457eae2022192fb Mon Sep 17 00:00:00 2001
From: pthaugen <pthaugen@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu, 26 May 2011 15:33:43 +0000
Subject: [PATCH] * config/rs6000/rs6000.c (rs6000_register_move_cost): Make LR/CTR
moves expensive on Power7 also.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@174294 138bc75d-0d04-0410-961f-82ee72b054a4
index 898a87b..b39801a 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -26670,9 +26670,10 @@ rs6000_register_move_cost (enum machine_mode mode,
else if (from == CR_REGS)
ret = 4;
- /* Power6 has slower LR/CTR moves so make them more expensive than
- memory in order to bias spills to memory .*/
- else if (rs6000_cpu == PROCESSOR_POWER6
+ /* For those processors that have slow LR/CTR moves, make them more
+ expensive than memory in order to bias spills to memory .*/
+ else if ((rs6000_cpu == PROCESSOR_POWER6
+ || rs6000_cpu == PROCESSOR_POWER7)
&& reg_classes_intersect_p (from, LINK_OR_CTR_REGS))
ret = 6 * hard_regno_nregs[0][mode];
--
1.7.0.4
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