[2/7,v4] rs6000: lenload/lenstore optab support

Message ID 88d2914c-fed8-8b56-1a0a-577c5abf3782@linux.ibm.com
State New
Headers show
Series
  • Untitled series #27118
Related show

Commit Message

Jakub Jelinek via Gcc-patches June 23, 2020, 3:58 a.m.
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  <linkw@gcc.gnu.org>

	* config/rs6000/vsx.md (len_load_<mode>): New define_expand.
	(len_store_<mode>): Likewise.

Patch

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