Update loongson vector reductions.

2015-11-06  Simon Dardis  <simon.dardis@imgtec.com>

        * config/mips/loongson.md (vec_loongson_extract_lo_<mode>): New, extract
        low part to scalar.
        (reduc_uplus_<mode>): Remove.
        (reduc_plus_scal_<mode>): Rename from reduc_splus_<mode>, Use vec
        loongson_extract_lo_<mode>.
        (reduc_smax_scal_<mode>, reduc_smin_scal_<mode>): Rename from
        reduc_smax_<mode>, reduc_smax_<mode>, use vec
        loongson_extract_lo_<mode>.
        (reduc_umax_scal_<mode>, reduc_umin_scal_<mode>): Rename.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@229844 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 32 insertions, 24 deletions

diff --git a/gcc/config/mips/loongson.md b/gcc/config/mips/loongson.md
index 0b19bd7baf8..b8489ab5ab9 100644
--- a/gcc/config/mips/loongson.md
+++ b/gcc/config/mips/loongson.md
@@ -852,58 +852,66 @@
   "dsrl\t%0,%1,%2"
   [(set_attr "type" "fcvt")])
 
-(define_expand "reduc_uplus_<mode>"
-  [(match_operand:VWH 0 "register_operand" "")
-   (match_operand:VWH 1 "register_operand" "")]
+(define_insn "vec_loongson_extract_lo_<mode>"
+  [(set (match_operand:<V_inner> 0 "register_operand" "=r")
+        (vec_select:<V_inner>
+          (match_operand:VWHB 1 "register_operand" "f")
+          (parallel [(const_int 0)])))]
   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
-{
-  mips_expand_vec_reduc (operands[0], operands[1], gen_add<mode>3);
-  DONE;
-})
+  "mfc1\t%0,%1"
+  [(set_attr "type" "mfc")])
 
-; ??? Given that we're not describing a widening reduction, we should
-; not have separate optabs for signed and unsigned.
-(define_expand "reduc_splus_<mode>"
-  [(match_operand:VWHB 0 "register_operand" "")
+(define_expand "reduc_plus_scal_<mode>"
+  [(match_operand:<V_inner> 0 "register_operand" "")
    (match_operand:VWHB 1 "register_operand" "")]
   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 {
-  emit_insn (gen_reduc_uplus_<mode>(operands[0], operands[1]));
+  rtx tmp = gen_reg_rtx (GET_MODE (operands[1]));
+  mips_expand_vec_reduc (tmp, operands[1], gen_add<mode>3);
+  emit_insn (gen_vec_loongson_extract_lo_<mode> (operands[0], tmp));
   DONE;
 })
 
-(define_expand "reduc_smax_<mode>"
-  [(match_operand:VWHB 0 "register_operand" "")
+(define_expand "reduc_smax_scal_<mode>"
+  [(match_operand:<V_inner> 0 "register_operand" "")
    (match_operand:VWHB 1 "register_operand" "")]
   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 {
-  mips_expand_vec_reduc (operands[0], operands[1], gen_smax<mode>3);
+  rtx tmp = gen_reg_rtx (GET_MODE (operands[1]));
+  mips_expand_vec_reduc (tmp, operands[1], gen_smax<mode>3);
+  emit_insn (gen_vec_loongson_extract_lo_<mode> (operands[0], tmp));
   DONE;
 })
 
-(define_expand "reduc_smin_<mode>"
-  [(match_operand:VWHB 0 "register_operand" "")
+(define_expand "reduc_smin_scal_<mode>"
+  [(match_operand:<V_inner> 0 "register_operand" "")
    (match_operand:VWHB 1 "register_operand" "")]
   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 {
-  mips_expand_vec_reduc (operands[0], operands[1], gen_smin<mode>3);
+  rtx tmp = gen_reg_rtx (GET_MODE (operands[1]));
+  mips_expand_vec_reduc (tmp, operands[1], gen_smin<mode>3);
+  emit_insn (gen_vec_loongson_extract_lo_<mode> (operands[0], tmp));
   DONE;
 })
 
-(define_expand "reduc_umax_<mode>"
-  [(match_operand:VB 0 "register_operand" "")
+(define_expand "reduc_umax_scal_<mode>"
+  [(match_operand:<V_inner> 0 "register_operand" "")
    (match_operand:VB 1 "register_operand" "")]
   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 {
-  mips_expand_vec_reduc (operands[0], operands[1], gen_umax<mode>3);
+  rtx tmp = gen_reg_rtx (GET_MODE (operands[1]));
+  mips_expand_vec_reduc (tmp, operands[1], gen_umax<mode>3);
+  emit_insn (gen_vec_loongson_extract_lo_<mode> (operands[0], tmp));
   DONE;
 })
 
-(define_expand "reduc_umin_<mode>"
-  [(match_operand:VB 0 "register_operand" "")
+(define_expand "reduc_umin_scal_<mode>"
+  [(match_operand:<V_inner> 0 "register_operand" "")
    (match_operand:VB 1 "register_operand" "")]
   "TARGET_HARD_FLOAT && TARGET_LOONGSON_VECTORS"
 {
-  mips_expand_vec_reduc (operands[0], operands[1], gen_umin<mode>3);
+  rtx tmp = gen_reg_rtx (GET_MODE (operands[1]));
+  mips_expand_vec_reduc (tmp, operands[1], gen_umin<mode>3);
+  emit_insn (gen_vec_loongson_extract_lo_<mode> (operands[0], tmp));
   DONE;
 })