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New define_splits to recombine output from LEGITIMIZE_ADDRESS.

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From-SVN: r12729
This commit is contained in:
Jim Wilson 1996-09-17 12:08:58 -07:00
parent 1bdf86c3ba
commit 653bd7a660
1 changed files with 55 additions and 0 deletions
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55
gcc/config/sh/sh.md
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@ -1709,6 +1709,61 @@
FAIL;
}")
;; If a base address generated by LEGITIMIZE_ADDRESS for SImode is
;; used only once, let combine add in the index again.
(define_split
[(set (match_operand:SI 0 "register_operand" "")
(match_operand:SI 1 "" ""))
(clobber (match_operand 2 "register_operand" ""))]
"! reload_in_progress && ! reload_completed"
[(use (reg:SI 0))]
"
{
rtx addr, reg, const_int;
if (GET_CODE (operands[1]) != MEM)
FAIL;
addr = XEXP (operands[1], 0);
if (GET_CODE (addr) != PLUS)
FAIL;
reg = XEXP (addr, 0);
const_int = XEXP (addr, 1);
if (GET_CODE (reg) != REG || GET_CODE (const_int) != CONST_INT)
FAIL;
emit_move_insn (operands[2], const_int);
emit_move_insn (operands[0],
change_address (operands[1], VOIDmode,
gen_rtx (PLUS, SImode, reg, operands[2])));
DONE;
}")
(define_split
[(set (match_operand:SI 1 "" "")
(match_operand:SI 0 "register_operand" ""))
(clobber (match_operand 2 "register_operand" ""))]
"! reload_in_progress && ! reload_completed"
[(use (reg:SI 0))]
"
{
rtx addr, reg, const_int;
if (GET_CODE (operands[1]) != MEM)
FAIL;
addr = XEXP (operands[1], 0);
if (GET_CODE (addr) != PLUS)
FAIL;
reg = XEXP (addr, 0);
const_int = XEXP (addr, 1);
if (GET_CODE (reg) != REG || GET_CODE (const_int) != CONST_INT)
FAIL;
emit_move_insn (operands[2], const_int);
emit_move_insn (change_address (operands[1], VOIDmode,
gen_rtx (PLUS, SImode, reg, operands[2])),
operands[0]);
DONE;
}")
(define_expand "movdf"
[(set (match_operand:DF 0 "general_movdst_operand" "")
(match_operand:DF 1 "general_movsrc_operand" ""))]