2012-02-28  Andrew Stubbs  <ams@codesourcery.com>

	gcc/
	* config/arm/arm.md (negdi2): Use gen_negdi2_neon.
	* config/arm/neon.md (negdi2_neon): New insn_and_split.

---
 gcc/config/arm/arm.md  |    8 +++++++-
 gcc/config/arm/neon.md |   14 ++++++++++++++
 2 files changed, 21 insertions(+), 1 deletions(-)

diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md
index 751997f..f1dbbf7 100644
--- a/gcc/config/arm/arm.md
+++ b/gcc/config/arm/arm.md
@@ -4048,7 +4048,13 @@
 	 (neg:DI (match_operand:DI 1 "s_register_operand" "")))
     (clobber (reg:CC CC_REGNUM))])]
   "TARGET_EITHER"
-  ""
+  {
+    if (TARGET_NEON)
+      {
+        emit_insn (gen_negdi2_neon (operands[0], operands[1]));
+	DONE;
+      }
+  }
 )
 
 ;; The constraints here are to prevent a *partial* overlap (where %Q0 == %R1).
diff --git a/gcc/config/arm/neon.md b/gcc/config/arm/neon.md
index 757be01..d2cb3ee 100644
--- a/gcc/config/arm/neon.md
+++ b/gcc/config/arm/neon.md
@@ -922,6 +922,20 @@
                     (const_string "neon_int_3")))]
 )
 
+(define_insn_and_split "negdi2_neon"
+  [(set (match_operand:DI 0 "s_register_operand" "=w")
+        (neg:DI (match_operand:DI 1 "s_register_operand" "w")))
+   (clobber (match_scratch:DI 2 "=w"))]
+  "TARGET_NEON"
+  "#"
+  "&& reload_completed"
+  [(set (match_dup 2) (const_int 0))
+   (parallel [(set (match_dup 0) (minus:DI (match_dup 2) (match_dup 1)))
+	      (clobber (reg:CC CC_REGNUM))])]
+  ""
+  [(set_attr "length" "8")]
+)
+
 (define_insn "*umin<mode>3_neon"
   [(set (match_operand:VDQIW 0 "s_register_operand" "=w")
 	(umin:VDQIW (match_operand:VDQIW 1 "s_register_operand" "w")