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Fix DImode move problems.

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From-SVN: r8022
This commit is contained in:
Michael Meissner 1994-09-03 18:18:53 +00:00
parent 29226a190a
commit e7f8067642
1 changed files with 34 additions and 29 deletions
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63
gcc/config/i386/i386.md
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@ -1352,40 +1352,45 @@
"* return output_move_double (operands);")
(define_insn ""
[(set (match_operand:DI 0 "push_operand" "=<")
(match_operand:DI 1 "nonmemory_operand" "riF"))
(clobber (match_scratch:SI 2 "X"))
(clobber (match_scratch:SI 3 "X"))]
"!TARGET_386 && TARGET_MOVE"
"* return output_move_double (operands);")
(define_insn ""
[(set (match_operand:DI 0 "push_operand" "=<")
(match_operand:DI 1 "general_operand" "roiF"))
(clobber (match_scratch:SI 2 "X"))
(clobber (match_scratch:SI 3 "X"))]
"!TARGET_386 && !TARGET_MOVE"
"* return output_move_double (operands);")
(define_expand "movdi"
[(parallel [(set (match_operand:DI 0 "general_operand" "")
(match_operand:DI 1 "general_operand" ""))
(clobber (match_scratch:SI 2 ""))
(clobber (match_scratch:SI 3 ""))])]
""
"
[(set (match_operand:DI 0 "push_operand" "=<,<,<")
(match_operand:DI 1 "general_operand" "riF,o,o"))
(clobber (match_scratch:SI 2 "X,=&r,=&r"))
(clobber (match_scratch:SI 3 "X,=&r,X"))]
"!TARGET_386"
"*
{
/* Don't generate memory->memory moves, go through a register */
if (TARGET_MOVE
&& (reload_in_progress | reload_completed) == 0
&& GET_CODE (operands[0]) == MEM
&& GET_CODE (operands[1]) == MEM)
rtx low[1], high[1], xop[4];
split_di (&operands[1], 1, low, high);
xop[0] = operands[2];
xop[1] = operands[3];
xop[2] = high[0];
xop[3] = low[0];
if (GET_CODE (operands[1]) != MEM)
{
operands[1] = force_reg (DImode, operands[1]);
output_asm_insn (AS1 (push%L0,%2), xop);
output_asm_insn (AS1 (push%L0,%3), xop);
}
else if (GET_CODE (operands[3]) == REG)
{ /* 2 scratch registers available */
output_asm_insn (AS2 (mov%L0,%2,%0), xop);
output_asm_insn (AS2 (mov%L0,%3,%1), xop);
output_asm_insn (AS1 (push%L0,%0), xop);
output_asm_insn (AS1 (push%L0,%1), xop);
}
else
{ /* 1 scratch register */
output_asm_insn (AS2 (mov%L0,%2,%0), xop);
output_asm_insn (AS1 (push%L0,%0), xop);
output_asm_insn (AS2 (mov%L0,%3,%0), xop);
output_asm_insn (AS1 (push%L0,%0), xop);
}
RET;
}")
(define_insn ""
(define_insn "movdi"
[(set (match_operand:DI 0 "general_operand" "=r,rm,o,o")
(match_operand:DI 1 "general_operand" "m,riF,o,o"))
(clobber (match_scratch:SI 2 "X,X,=&r,=&r"))