From 80b8eb11efffd0b634b3e2ebe599c9bda0fac5ac Mon Sep 17 00:00:00 2001
From: Julian Brown <jules@gcc.gnu.org>
Date: Tue, 31 Jul 2007 10:06:24 +0000
Subject: neon.md (vec_set<mode>_internal, [...]): New define_insns.

	gcc/
	* config/arm/neon.md (vec_set<mode>_internal, vec_setv2di_internal):
	New define_insns. Use correct RTL.
	(vec_set<mode>): Write as expander.

From-SVN: r127084
---
 gcc/ChangeLog          |  8 +++++++-
 gcc/config/arm/neon.md | 56 +++++++++++++++++++++++++++++++-------------------
 2 files changed, 42 insertions(+), 22 deletions(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ed544bd..d7a2e7e 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,6 +1,12 @@
+2007-07-31  Julian Brown  <julian@codesourcery.com>
+
+	* config/arm/neon.md (vec_set<mode>_internal, vec_setv2di_internal):
+	New define_insns. Use correct RTL.
+	(vec_set<mode>): Write as expander.
+
 2007-07-31  Razya Ladelsky  <razya@il.ibm.com>
 
-        * matrix-reorg.c (analyze_matrix_allocation_site): Avoid referring 
+	* matrix-reorg.c (analyze_matrix_allocation_site): Avoid referring 
 	to an unallocated space.
 
 2007-07-30  Jan Sjodin  <jan.sjodin@amd.com>
diff --git a/gcc/config/arm/neon.md b/gcc/config/arm/neon.md
index 1b09ead..394f26a 100644
--- a/gcc/config/arm/neon.md
+++ b/gcc/config/arm/neon.md
@@ -727,33 +727,35 @@
   neon_disambiguate_copy (operands, dest, src, 4);
 })
 
-(define_insn "vec_set<mode>"
-  [(set (match_operand:VD 0 "s_register_operand" "+w")
+(define_insn "vec_set<mode>_internal"
+  [(set (match_operand:VD 0 "s_register_operand" "=w")
         (vec_merge:VD
-          (match_operand:VD 3 "s_register_operand" "0")
           (vec_duplicate:VD
             (match_operand:<V_elem> 1 "s_register_operand" "r"))
-          (ashift:SI (const_int 1)
-                     (match_operand:SI 2 "immediate_operand" "i"))))]
+          (match_operand:VD 3 "s_register_operand" "0")
+          (match_operand:SI 2 "immediate_operand" "i")))]
   "TARGET_NEON"
-  "vmov%?.<V_uf_sclr>\t%P0[%c2], %1"
+{
+  operands[2] = GEN_INT (ffs ((int) INTVAL (operands[2]) - 1));
+  
+  return "vmov%?.<V_uf_sclr>\t%P0[%c2], %1";
+}
   [(set_attr "predicable" "yes")
-   (set_attr "neon_type" "neon_mcr")]
-)
+   (set_attr "neon_type" "neon_mcr")])
 
-(define_insn "vec_set<mode>"
-  [(set (match_operand:VQ 0 "s_register_operand" "+w")
+(define_insn "vec_set<mode>_internal"
+  [(set (match_operand:VQ 0 "s_register_operand" "=w")
         (vec_merge:VQ
-          (match_operand:VQ 3 "s_register_operand" "0")
           (vec_duplicate:VQ
             (match_operand:<V_elem> 1 "s_register_operand" "r"))
-          (ashift:SI (const_int 1)
-		     (match_operand:SI 2 "immediate_operand" "i"))))]
+          (match_operand:VQ 3 "s_register_operand" "0")
+          (match_operand:SI 2 "immediate_operand" "i")))]
   "TARGET_NEON"
 {
+  HOST_WIDE_INT elem = ffs (operands[2]) - 1;
   int half_elts = GET_MODE_NUNITS (<MODE>mode) / 2;
-  int elt = INTVAL (operands[2]) % half_elts;
-  int hi = (INTVAL (operands[2]) / half_elts) * 2;
+  int elt = elem % half_elts;
+  int hi = (elem / half_elts) * 2;
   int regno = REGNO (operands[0]);
 
   operands[0] = gen_rtx_REG (<V_HALF>mode, regno + hi);
@@ -765,17 +767,17 @@
    (set_attr "neon_type" "neon_mcr")]
 )
 
-(define_insn "vec_setv2di"
-  [(set (match_operand:V2DI 0 "s_register_operand" "+w")
+(define_insn "vec_setv2di_internal"
+  [(set (match_operand:V2DI 0 "s_register_operand" "=w")
         (vec_merge:V2DI
-          (match_operand:V2DI 3 "s_register_operand" "0")
           (vec_duplicate:V2DI
             (match_operand:DI 1 "s_register_operand" "r"))
-          (ashift:SI (const_int 1)
-		     (match_operand:SI 2 "immediate_operand" "i"))))]
+          (match_operand:V2DI 3 "s_register_operand" "0")
+          (match_operand:SI 2 "immediate_operand" "i")))]
   "TARGET_NEON"
 {
-  int regno = REGNO (operands[0]) + INTVAL (operands[2]);
+  HOST_WIDE_INT elem = ffs (operands[2]) - 1;
+  int regno = REGNO (operands[0]) + 2 * elem;
 
   operands[0] = gen_rtx_REG (DImode, regno);
 
@@ -785,6 +787,18 @@
    (set_attr "neon_type" "neon_mcr_2_mcrr")]
 )
 
+(define_expand "vec_set<mode>"
+  [(match_operand:VDQ 0 "s_register_operand" "")
+   (match_operand:<V_elem> 1 "s_register_operand" "")
+   (match_operand:SI 2 "immediate_operand" "")]
+  "TARGET_NEON"
+{
+  HOST_WIDE_INT elem = (HOST_WIDE_INT) 1 << INTVAL (operands[2]);
+  emit_insn (gen_vec_set<mode>_internal (operands[0], operands[1],
+					 GEN_INT (elem), operands[0]));
+  DONE;
+})
+
 (define_insn "vec_extract<mode>"
   [(set (match_operand:<V_elem> 0 "s_register_operand" "=r")
         (vec_select:<V_elem>
-- 
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