[PATCH GCC8][28/33]Don't count non-interger PHIs for register pressure

[Bin Cheng]

Hi,
Given only integer variables are meaningful for register pressure estimation in 
IVOPTs,
this patch skips non-integer type PHIs when counting register pressure.
Is it OK?
Thanks,
bin

2017-04-11  Bin Cheng  <bin.ch...@arm.com>

        * tree-ssa-loop-ivopts.c (determine_set_costs): Skip non-interger
        when counting register pressure.


From ea74dcacc97e4aee0de952dc0142d71502cc5252 Mon Sep 17 00:00:00 2001
From: Bin Cheng <binch...@e108451-lin.cambridge.arm.com>
Date: Tue, 7 Mar 2017 16:26:27 +0000
Subject: [PATCH 28/33] skip-non_int-phi-reg-pressure-20170221.txt

---
 gcc/tree-ssa-loop-ivopts.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/gcc/tree-ssa-loop-ivopts.c b/gcc/tree-ssa-loop-ivopts.c
index 0b9170c..db8254c 100644
--- a/gcc/tree-ssa-loop-ivopts.c
+++ b/gcc/tree-ssa-loop-ivopts.c
@@ -5583,6 +5583,9 @@ determine_set_costs (struct ivopts_data *data)
       if (get_iv (data, op))
        continue;
 
+      if (!INTEGRAL_TYPE_P (TREE_TYPE (op)))
+       continue;
+
       n++;
     }
 
-- 
1.9.1