From 5977a10d4a600792417e439d7bc67a514226a125 Mon Sep 17 00:00:00 2001
From: Ian Bolton <ian.bolton@arm.com>
Date: Tue, 19 Mar 2013 16:18:46 +0000
Subject: [PATCH] AArch64 backend support for ROR instruction.

From-SVN: r196796
---
 gcc/ChangeLog                 |  5 +++++
 gcc/config/aarch64/aarch64.md | 28 ++++++++++++++++++++++++++++
 gcc/testsuite/ChangeLog       |  4 ++++
 3 files changed, 37 insertions(+)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 4b2d216356d..d55999eec69 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2013-03-19  Ian Bolton  <ian.bolton@arm.com>
+
+	* config/aarch64/aarch64.md (*ror<mode>3_insn): New pattern.
+	(*rorsi3_insn_uxtw): Likewise.
+
 2013-03-19  Ian Bolton  <ian.bolton@arm.com>
 
 	* config/aarch64/aarch64.md (*extr<mode>5_insn): New pattern.
diff --git a/gcc/config/aarch64/aarch64.md b/gcc/config/aarch64/aarch64.md
index 8fc86d47de9..4358b448c6d 100644
--- a/gcc/config/aarch64/aarch64.md
+++ b/gcc/config/aarch64/aarch64.md
@@ -2731,6 +2731,34 @@
    (set_attr "mode" "SI")]
 )
 
+(define_insn "*ror<mode>3_insn"
+  [(set (match_operand:GPI 0 "register_operand" "=r")
+	(rotate:GPI (match_operand:GPI 1 "register_operand" "r")
+		    (match_operand 2 "const_int_operand" "n")))]
+  "UINTVAL (operands[2]) < GET_MODE_BITSIZE (<MODE>mode)"
+{
+  operands[3] = GEN_INT (<sizen> - UINTVAL (operands[2]));
+  return "ror\\t%<w>0, %<w>1, %3";
+}
+  [(set_attr "v8type" "shift")
+   (set_attr "mode" "<MODE>")]
+)
+
+;; zero_extend version of the above
+(define_insn "*rorsi3_insn_uxtw"
+  [(set (match_operand:DI 0 "register_operand" "=r")
+	(zero_extend:DI
+	 (rotate:SI (match_operand:SI 1 "register_operand" "r")
+		    (match_operand 2 "const_int_operand" "n"))))]
+  "UINTVAL (operands[2]) < 32"
+{
+  operands[3] = GEN_INT (32 - UINTVAL (operands[2]));
+  return "ror\\t%w0, %w1, %3";
+}
+  [(set_attr "v8type" "shift")
+   (set_attr "mode" "SI")]
+)
+
 (define_insn "*<ANY_EXTEND:optab><GPI:mode>_ashl<SHORT:mode>"
   [(set (match_operand:GPI 0 "register_operand" "=r")
 	(ANY_EXTEND:GPI
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index fa69025f095..e198a6e0af2 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2013-03-19  Ian Bolton  <ian.bolton@arm.com>
+
+	* gcc.target/aarch64/ror.c: New test.
+
 2013-03-19  Ian Bolton  <ian.bolton@arm.com>
 
 	* gcc.target/aarch64/extr.c: New test.