@@ -108,6 +108,7 @@ extern void s390_expand_plus_operand (rtx, rtx, rtx);
extern void emit_symbolic_move (rtx *);
extern void s390_load_address (rtx, rtx);
extern bool s390_expand_cpymem (rtx, rtx, rtx, rtx, rtx);
+extern bool s390_expand_movmem (rtx, rtx, rtx, rtx, rtx);
extern void s390_expand_setmem (rtx, rtx, rtx);
extern bool s390_expand_cmpmem (rtx, rtx, rtx, rtx);
extern void s390_expand_vec_strlen (rtx, rtx, rtx);
@@ -5818,6 +5818,94 @@ s390_expand_cpymem (rtx dst, rtx src, rtx len, rtx min_len_rtx, rtx max_len_rtx)
return false;
}
+bool
+s390_expand_movmem (rtx dst, rtx src, rtx len, rtx min_len_rtx, rtx max_len_rtx)
+{
+ /* Exit early in case nothing has to be done. */
+ if (CONST_INT_P (len) && UINTVAL (len) == 0)
+ return true;
+ /* Exit early in case length is not upper bounded. */
+ else if (max_len_rtx == NULL)
+ return false;
+
+ unsigned HOST_WIDE_INT min_len = UINTVAL (min_len_rtx);
+ unsigned HOST_WIDE_INT max_len = UINTVAL (max_len_rtx);
+
+ /* At most 16 bytes. */
+ if (max_len <= 16 && TARGET_VX)
+ {
+ rtx_code_label *end_label;
+
+ if (min_len == 0)
+ {
+ end_label = gen_label_rtx ();
+ emit_cmp_and_jump_insns (len, const0_rtx, EQ, NULL_RTX,
+ GET_MODE (len), 1, end_label,
+ profile_probability::very_unlikely ());
+ }
+
+ rtx lenm1;
+ if (CONST_INT_P (len))
+ {
+ lenm1 = gen_reg_rtx (SImode);
+ emit_move_insn (lenm1, GEN_INT (UINTVAL (len) - 1));
+ }
+ else
+ lenm1
+ = expand_binop (SImode, add_optab, convert_to_mode (SImode, len, 1),
+ constm1_rtx, NULL_RTX, 1, OPTAB_DIRECT);
+
+ rtx tmp = gen_reg_rtx (V16QImode);
+ emit_insn (gen_vllv16qi (tmp, lenm1, src));
+ emit_insn (gen_vstlv16qi (tmp, lenm1, dst));
+
+ if (min_len == 0)
+ emit_label (end_label);
+
+ return true;
+ }
+
+ /* At most 256 bytes. */
+ else if (max_len <= 256 && TARGET_Z15)
+ {
+ rtx_code_label *end_label = gen_label_rtx ();
+
+ if (min_len == 0)
+ emit_cmp_and_jump_insns (len, const0_rtx, EQ, NULL_RTX, GET_MODE (len),
+ 1, end_label,
+ profile_probability::very_unlikely ());
+
+ rtx dst_addr = gen_reg_rtx (Pmode);
+ rtx src_addr = gen_reg_rtx (Pmode);
+ emit_move_insn (dst_addr, force_operand (XEXP (dst, 0), NULL_RTX));
+ emit_move_insn (src_addr, force_operand (XEXP (src, 0), NULL_RTX));
+
+ rtx lenm1 = CONST_INT_P (len)
+ ? GEN_INT (UINTVAL (len) - 1)
+ : expand_binop (GET_MODE (len), add_optab, len, constm1_rtx,
+ NULL_RTX, 1, OPTAB_DIRECT);
+
+ rtx_code_label *right_to_left_label = gen_label_rtx ();
+ emit_cmp_and_jump_insns (src_addr, dst_addr, LT, NULL_RTX, GET_MODE (len),
+ 1, right_to_left_label);
+
+ // MVC
+ emit_insn (
+ gen_cpymem_short (dst, src, convert_to_mode (Pmode, lenm1, 1)));
+ emit_jump (end_label);
+
+ // MVCRL
+ emit_label (right_to_left_label);
+ emit_insn (gen_mvcrl (dst, src, convert_to_mode (SImode, lenm1, 1)));
+
+ emit_label (end_label);
+
+ return true;
+ }
+
+ return false;
+}
+
/* Emit code to set LEN bytes at DST to VAL.
Make use of clrmem if VAL is zero. */
@@ -61,6 +61,7 @@
UNSPEC_ROUND
UNSPEC_ICM
UNSPEC_TIE
+ UNSPEC_MVCRL
; Convert CC into a str comparison result and copy it into an
; integer register
@@ -3496,6 +3497,40 @@
[(set_attr "length" "8")
(set_attr "type" "vs")])
+(define_expand "movmem<mode>"
+ [(set (match_operand:BLK 0 "memory_operand") ; destination
+ (match_operand:BLK 1 "memory_operand")) ; source
+ (use (match_operand:GPR 2 "general_operand")) ; size
+ (match_operand 3 "") ; align
+ (match_operand 4 "") ; expected align
+ (match_operand 5 "") ; expected size
+ (match_operand 6 "") ; minimal size
+ (match_operand 7 "")] ; maximal size
+ ""
+{
+ if (s390_expand_movmem (operands[0], operands[1], operands[2], operands[6], operands[7]))
+ DONE;
+ else
+ FAIL;
+})
+
+(define_insn "*mvcrl"
+ [(set (match_operand:BLK 0 "memory_operand" "=Q")
+ (unspec:BLK [(match_operand:BLK 1 "memory_operand" "Q")
+ (reg:SI GPR0_REGNUM)]
+ UNSPEC_MVCRL))]
+ "TARGET_Z15"
+ "mvcrl\t%0,%1"
+ [(set_attr "op_type" "SSE")])
+
+(define_expand "mvcrl"
+ [(set (reg:SI GPR0_REGNUM) (match_operand:SI 2 "general_operand"))
+ (set (match_operand:BLK 0 "memory_operand" "=Q")
+ (unspec:BLK [(match_operand:BLK 1 "memory_operand" "Q")
+ (reg:SI GPR0_REGNUM)]
+ UNSPEC_MVCRL))]
+ "TARGET_Z15"
+ "")
;
; Test data class.