Hi all,

This patch removes all redundant set in vnni patterns.

Ok for trunk?

Thx,
Haochen

gcc/ChangeLog:

        * config/i386/sse.md (sdot_prod<mode>): Remove redundant SET.
        (usdot_prod<mode>): Ditto.
        (sdot_prod<mode>): Ditto.
        (udot_prod<mode>): Ditto.
---
 gcc/config/i386/sse.md | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md
index 532738dcf94..acd10908d76 100644
--- a/gcc/config/i386/sse.md
+++ b/gcc/config/i386/sse.md
@@ -16174,7 +16174,6 @@
       operands[2] = lowpart_subreg (<sseunpackmode>mode,
                                    force_reg (<MODE>mode, operands[2]),
                                    <MODE>mode);
-      emit_insn (gen_rtx_SET (operands[0], operands[3]));
       emit_insn (gen_vpdpwssd_<SDOT_VPDP_SUF> (operands[0], operands[3],
                                               operands[1], operands[2]));
     }
@@ -29963,7 +29962,6 @@
   operands[2] = lowpart_subreg (<ssedvecmode>mode,
                                force_reg (<MODE>mode, operands[2]),
                                <MODE>mode);
-  emit_insn (gen_rtx_SET (operands[0], operands[3]));
   emit_insn (gen_vpdpbusd_<ssedvecmodelower> (operands[0], operands[3],
                                  operands[1], operands[2]));
   DONE;
@@ -30780,7 +30778,6 @@
       operands[2] = lowpart_subreg (<ssedvecmode>mode,
                                    force_reg (<MODE>mode, operands[2]),
                                    <MODE>mode);
-      emit_insn (gen_rtx_SET (operands[0], operands[3]));
       emit_insn (gen_vpdpbssd_<ssedvecmodelower> (operands[0], operands[3],
                                                  operands[1], operands[2]));
     }
@@ -30857,7 +30854,6 @@
       operands[2] = lowpart_subreg (<ssedvecmode>mode,
                                    force_reg (<MODE>mode, operands[2]),
                                    <MODE>mode);
-      emit_insn (gen_rtx_SET (operands[0], operands[3]));
       emit_insn (gen_vpdpbuud_<ssedvecmodelower> (operands[0], operands[3],
                                                  operands[1], operands[2]));
    }
-- 
2.31.1

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