From: James Greenhalgh <james.greenhalgh@arm.com>
Date: Fri, 16 May 2014 08:52:30 +0000 (+0000)
Subject: [AArch64 costs 6/18] Set default costs and handle vector modes.
X-Git-Tag: releases/gcc-5.1.0~7548
X-Git-Url: https://gcc.gnu.org/git/?a=commitdiff_plain;h=7fc5ef02f4a8071a6d323bc998cdb641e6070371;p=gcc.git

[AArch64 costs 6/18] Set default costs and handle vector modes.

gcc/

	* config/aarch64/aarch64.c (aarch64_rtx_costs): Set default costs.

From-SVN: r210498
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e449380a4411..97017485ef86 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2014-05-16  James Greenhalgh  <james.greenhalgh@arm.com>
+
+	* config/aarch64/aarch64.c (aarch64_rtx_costs): Set default costs.
+
 2014-05-16  James Greenhalgh  <james.greenhalgh@arm.com>
 	    Philipp Tomsich  <philipp.tomsich@theobroma-systems.com>
 
diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index 2b6479dc17c8..52189f4a9679 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -4843,6 +4843,21 @@ aarch64_rtx_costs (rtx x, int code, int outer ATTRIBUTE_UNUSED,
     = aarch64_tune_params->insn_extra_cost;
   enum machine_mode mode = GET_MODE (x);
 
+  /* By default, assume that everything has equivalent cost to the
+     cheapest instruction.  Any additional costs are applied as a delta
+     above this default.  */
+  *cost = COSTS_N_INSNS (1);
+
+  /* TODO: The cost infrastructure currently does not handle
+     vector operations.  Assume that all vector operations
+     are equally expensive.  */
+  if (VECTOR_MODE_P (mode))
+    {
+      if (speed)
+	*cost += extra_cost->vect.alu;
+      return true;
+    }
+
   switch (code)
     {
     case SET: