Hi,
V4: Update define_expand names as optab name changes.
V3: Update the define_expand as optab changes.
BR,
Kewen
-----
gcc/ChangeLog:
2020-MM-DD Kewen Lin <li...@gcc.gnu.org>
* config/rs6000/vsx.md (len_load_<mode>): New define_expand.
(len_store_<mode>): Likewise.
diff --git a/gcc/config/rs6000/vsx.md b/gcc/config/rs6000/vsx.md
index 2a28215ac5b..e443960afe3 100644
--- a/gcc/config/rs6000/vsx.md
+++ b/gcc/config/rs6000/vsx.md
@@ -5082,6 +5082,38 @@ (define_expand "stxvl"
operands[3] = gen_reg_rtx (DImode);
})
+;; Define optab for vector access with length vectorization exploitation.
+(define_expand "len_load_<mode>"
+ [(match_operand:VEC_A 0 "vlogical_operand")
+ (match_operand:VEC_A 1 "memory_operand")
+ (match_operand:QI 2 "gpc_reg_operand")]
+ "TARGET_P9_VECTOR && TARGET_64BIT"
+{
+ rtx mem = XEXP (operands[1], 0);
+ mem = force_reg (DImode, mem);
+ rtx len = gen_lowpart (DImode, operands[2]);
+ rtx res = gen_reg_rtx (V16QImode);
+ emit_insn (gen_lxvl (res, mem, len));
+ emit_move_insn (operands[0], gen_lowpart (<MODE>mode, res));
+ DONE;
+})
+
+(define_expand "len_store_<mode>"
+ [(match_operand:VEC_A 0 "memory_operand")
+ (match_operand:VEC_A 1 "vlogical_operand")
+ (match_operand:QI 2 "gpc_reg_operand")
+ ]
+ "TARGET_P9_VECTOR && TARGET_64BIT"
+{
+ rtx val = gen_reg_rtx (V16QImode);
+ emit_move_insn (val, gen_lowpart (V16QImode, operands[1]));
+ rtx mem = XEXP (operands[0], 0);
+ mem = force_reg (DImode, mem);
+ rtx len = gen_lowpart (DImode, operands[2]);
+ emit_insn (gen_stxvl (val, mem, len));
+ DONE;
+})
+
(define_insn "*stxvl"
[(set (mem:V16QI (match_operand:DI 1 "gpc_reg_operand" "b"))
(unspec:V16QI
