From: Kyrylo Tkachov <kyrylo.tkachov@arm.com>
Date: Wed, 23 Apr 2014 15:30:53 +0000 (+0000)
Subject: [AArch64] Add handling of bswap operations in rtx costs
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=18b42b2a9c7b632653801344329076b934861930;p=gcc.git

[AArch64] Add handling of bswap operations in rtx costs

	* config/aarch64/aarch64.c (aarch64_rtx_costs): Handle BSWAP.

From-SVN: r209706
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e499b256f61..99f4b0d75e1 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2014-04-23  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	* config/aarch64/aarch64.c (aarch64_rtx_costs): Handle BSWAP.
+
 2014-04-23  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
 	* config/arm/arm.md (arm_rev16si2): New pattern.
diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index 68c29aa0da7..277c0875032 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -4694,6 +4694,14 @@ aarch64_rtx_costs (rtx x, int code, int outer ATTRIBUTE_UNUSED,
 
       return false;
 
+    case BSWAP:
+      *cost = COSTS_N_INSNS (1);
+
+      if (speed)
+        *cost += extra_cost->alu.rev;
+
+      return false;
+
     case IOR:
       if (aarch_rev16_p (x))
         {