From bd83ff2c6700863b92c59931c4ba4a1bef97a50f Mon Sep 17 00:00:00 2001
From: Ian Bolton <ian.bolton@arm.com>
Date: Tue, 19 Mar 2013 16:17:14 +0000
Subject: [PATCH] AArch64 backend support for EXTR instruction.

From-SVN: r196795
---
 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 b55bc7f..4b2d216 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2013-03-19  Ian Bolton  <ian.bolton@arm.com>
+
+	* config/aarch64/aarch64.md (*extr<mode>5_insn): New pattern.
+	(*extrsi5_insn_uxtw): Likewise.
+
 2013-03-19  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/56273
diff --git a/gcc/config/aarch64/aarch64.md b/gcc/config/aarch64/aarch64.md
index 76a5125..8fc86d4 100644
--- a/gcc/config/aarch64/aarch64.md
+++ b/gcc/config/aarch64/aarch64.md
@@ -2703,6 +2703,34 @@
    (set_attr "mode" "<MODE>")]
 )
 
+(define_insn "*extr<mode>5_insn"
+  [(set (match_operand:GPI 0 "register_operand" "=r")
+	(ior:GPI (ashift:GPI (match_operand:GPI 1 "register_operand" "r")
+			     (match_operand 3 "const_int_operand" "n"))
+		 (lshiftrt:GPI (match_operand:GPI 2 "register_operand" "r")
+			       (match_operand 4 "const_int_operand" "n"))))]
+  "UINTVAL (operands[3]) < GET_MODE_BITSIZE (<MODE>mode) &&
+   (UINTVAL (operands[3]) + UINTVAL (operands[4]) == GET_MODE_BITSIZE (<MODE>mode))"
+  "extr\\t%<w>0, %<w>1, %<w>2, %4"
+  [(set_attr "v8type" "shift")
+   (set_attr "mode" "<MODE>")]
+)
+
+;; zero_extend version of the above
+(define_insn "*extrsi5_insn_uxtw"
+  [(set (match_operand:DI 0 "register_operand" "=r")
+	(zero_extend:DI
+	 (ior:SI (ashift:SI (match_operand:SI 1 "register_operand" "r")
+			    (match_operand 3 "const_int_operand" "n"))
+		 (lshiftrt:SI (match_operand:SI 2 "register_operand" "r")
+			      (match_operand 4 "const_int_operand" "n")))))]
+  "UINTVAL (operands[3]) < 32 &&
+   (UINTVAL (operands[3]) + UINTVAL (operands[4]) == 32)"
+  "extr\\t%w0, %w1, %w2, %4"
+  [(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 5a65528..fa69025 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/extr.c: New test.
+
 2013-03-19  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/56273
-- 
2.7.4