OpenE2K/gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

(movti): Split CONST_INTs into 4 moves, and force all other constants to

Browse Source 
memory.

From-SVN: r2236
This commit is contained in:
Jim Wilson 1992-09-24 22:33:07 -07:00
parent 1154b096fa
commit a9fb8bb959
1 changed files with 29 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
gcc/config/a29k/a29k.md
View File

@ -2254,6 +2254,35 @@
{
if (GET_CODE (operands[0]) == MEM)
operands[1] = force_reg (TImode, operands[1]);
/* We can't handle constants in general because there is no rtl to represent
128 bit constants. Splitting happens to work for CONST_INTs so we split
them for good code. Other constants will get forced to memory. */
if (GET_CODE (operands[1]) == CONST_INT)
{
rtx part0, part1, part2, part3;
part0 = operand_subword (operands[0], 0, 1, TImode);
part1 = operand_subword (operands[0], 1, 1, TImode);
part2 = operand_subword (operands[0], 2, 1, TImode);
part3 = operand_subword (operands[0], 3, 1, TImode);
emit_move_insn (part0, const0_rtx);
emit_move_insn (part1, const0_rtx);
emit_move_insn (part2, const0_rtx);
emit_move_insn (part3, const0_rtx);
DONE;
}
else if (CONSTANT_P (operands[1]))
{
operands[1] = force_const_mem (TImode, operands[1]);
if (! memory_address_p (TImode, XEXP (operands[1], 0))
&& ! reload_in_progress)
operands[1] = change_address (operands[1], TImode,
XEXP (operands[1], 0));
}
}")
;; For compare operations, we simply store the comparison operands and