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sh.md (ashldi3_std): New define_expand.

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* config/sh/sh.md (ashldi3_std): New define_expand.
	(ashldi3): Use it.

From-SVN: r148018
This commit is contained in:
Kaz Kojima 2009-05-31 21:48:01 +00:00
parent 47ea8d4efa
commit ed7910bb15
2 changed files with 46 additions and 2 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2009-05-31 Kaz Kojima <kkojima@gcc.gnu.org>
* config/sh/sh.md (ashldi3_std): New define_expand.
(ashldi3): Use it.
2009-05-31 Kaz Kojima <kkojima@gcc.gnu.org>
PR target/40313

43
gcc/config/sh/sh.md
View File

@ -3850,6 +3850,34 @@ label:
[(set_attr "length" "4")
(set_attr "type" "arith")])
;; Expander for DImode shift left with SImode operations.
(define_expand "ashldi3_std"
[(set (match_operand:DI 0 "arith_reg_dest" "=r")
(ashift:DI (match_operand:DI 1 "arith_reg_operand" "r")
(match_operand:DI 2 "const_int_operand" "n")))]
"TARGET_SH1 && INTVAL (operands[2]) < 32"
"
{
int low_word = (TARGET_LITTLE_ENDIAN ? 0 : 1);
int high_word = (TARGET_LITTLE_ENDIAN ? 1 : 0);
rtx low_src = operand_subword (operands[1], low_word, 0, DImode);
rtx high_src = operand_subword (operands[1], high_word, 0, DImode);
rtx dst = gen_reg_rtx (DImode);
rtx low_dst = operand_subword (dst, low_word, 1, DImode);
rtx high_dst = operand_subword (dst, high_word, 1, DImode);
rtx tmp0, tmp1;
tmp0 = gen_reg_rtx (SImode);
tmp1 = gen_reg_rtx (SImode);
emit_insn (gen_lshrsi3 (tmp0, low_src, GEN_INT (32 - INTVAL (operands[2]))));
emit_insn (gen_ashlsi3 (low_dst, low_src, operands[2]));
emit_insn (gen_ashlsi3 (tmp1, high_src, operands[2]));
emit_insn (gen_iorsi3 (high_dst, tmp0, tmp1));
emit_move_insn (operands[0], dst);
DONE;
}")
(define_insn "ashldi3_media"
[(set (match_operand:DI 0 "arith_reg_dest" "=r,r")
(ashift:DI (match_operand:DI 1 "arith_reg_operand" "r,r")
@ -3882,8 +3910,19 @@ label:
emit_insn (gen_ashldi3_media (operands[0], operands[1], operands[2]));
DONE;
}
if (GET_CODE (operands[2]) != CONST_INT
|| INTVAL (operands[2]) != 1)
if (GET_CODE (operands[2]) == CONST_INT
&& INTVAL (operands[2]) == 1)
{
emit_insn (gen_ashldi3_k (operands[0], operands[1]));
DONE;
}
else if (GET_CODE (operands[2]) == CONST_INT
&& INTVAL (operands[2]) < 32)
{
emit_insn (gen_ashldi3_std (operands[0], operands[1], operands[2]));
DONE;
}
else
FAIL;
}")