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rs6000.c (expand_block_move): DImode loads and stores require word-aligned displacements.

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* rs6000.c (expand_block_move): DImode loads and stores require
	word-aligned displacements.  Increment address registers with
	adddi3 on 64-bit platform.  Use TARGET_POWERPC64 not TARGET_64BIT.

From-SVN: r29606
This commit is contained in:
David Edelsohn 1999-09-22 22:27:58 +00:00 committed by David Edelsohn
parent 405f63da1c
commit cc0d9ba869
2 changed files with 132 additions and 54 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
Wed Sep 22 17:55:31 1999 David Edelsohn <edelsohn@gnu.org>
* rs6000.c (expand_block_move): DImode loads and stores require
word-aligned displacements. Increment address registers with
adddi3 on 64-bit platform. Use TARGET_POWERPC64 not TARGET_64BIT.
Wed Sep 22 17:35:55 1999 Michael Meissner <meissner@cygnus.com>
* dwarf2out.c (base_type_die): Use the name __unknown__ if there

180
gcc/config/rs6000/rs6000.c
View File

@ -2073,7 +2073,7 @@ expand_block_move (operands)
int move_bytes;
/* If this is not a fixed size move, just call memcpy */
if (!constp)
if (! constp)
return 0;
/* Anything to move? */
@ -2088,7 +2088,7 @@ expand_block_move (operands)
if (bytes > 4*8)
return 0;
}
else if (!STRICT_ALIGNMENT)
else if (! STRICT_ALIGNMENT)
{
if (bytes > 4*8)
return 0;
@ -2105,89 +2105,134 @@ expand_block_move (operands)
for ( ; bytes > 0; bytes -= move_bytes)
{
if (bytes > 24 /* move up to 32 bytes at a time */
&& !fixed_regs[5]
&& !fixed_regs[6]
&& !fixed_regs[7]
&& !fixed_regs[8]
&& !fixed_regs[9]
&& !fixed_regs[10]
&& !fixed_regs[11]
&& !fixed_regs[12])
&& ! fixed_regs[5]
&& ! fixed_regs[6]
&& ! fixed_regs[7]
&& ! fixed_regs[8]
&& ! fixed_regs[9]
&& ! fixed_regs[10]
&& ! fixed_regs[11]
&& ! fixed_regs[12])
{
move_bytes = (bytes > 32) ? 32 : bytes;
emit_insn (gen_movstrsi_8reg (expand_block_move_mem (BLKmode, dest_reg, orig_dest),
expand_block_move_mem (BLKmode, src_reg, orig_src),
GEN_INT ((move_bytes == 32) ? 0 : move_bytes),
emit_insn (gen_movstrsi_8reg (expand_block_move_mem (BLKmode,
dest_reg,
orig_dest),
expand_block_move_mem (BLKmode,
src_reg,
orig_src),
GEN_INT ((move_bytes == 32)
? 0 : move_bytes),
align_rtx));
}
else if (bytes > 16 /* move up to 24 bytes at a time */
&& !fixed_regs[7]
&& !fixed_regs[8]
&& !fixed_regs[9]
&& !fixed_regs[10]
&& !fixed_regs[11]
&& !fixed_regs[12])
&& ! fixed_regs[7]
&& ! fixed_regs[8]
&& ! fixed_regs[9]
&& ! fixed_regs[10]
&& ! fixed_regs[11]
&& ! fixed_regs[12])
{
move_bytes = (bytes > 24) ? 24 : bytes;
emit_insn (gen_movstrsi_6reg (expand_block_move_mem (BLKmode, dest_reg, orig_dest),
expand_block_move_mem (BLKmode, src_reg, orig_src),
emit_insn (gen_movstrsi_6reg (expand_block_move_mem (BLKmode,
dest_reg,
orig_dest),
expand_block_move_mem (BLKmode,
src_reg,
orig_src),
GEN_INT (move_bytes),
align_rtx));
}
else if (bytes > 8 /* move up to 16 bytes at a time */
&& !fixed_regs[9]
&& !fixed_regs[10]
&& !fixed_regs[11]
&& !fixed_regs[12])
&& ! fixed_regs[9]
&& ! fixed_regs[10]
&& ! fixed_regs[11]
&& ! fixed_regs[12])
{
move_bytes = (bytes > 16) ? 16 : bytes;
emit_insn (gen_movstrsi_4reg (expand_block_move_mem (BLKmode, dest_reg, orig_dest),
expand_block_move_mem (BLKmode, src_reg, orig_src),
emit_insn (gen_movstrsi_4reg (expand_block_move_mem (BLKmode,
dest_reg,
orig_dest),
expand_block_move_mem (BLKmode,
src_reg,
orig_src),
GEN_INT (move_bytes),
align_rtx));
}
else if (bytes > 4 && !TARGET_64BIT)
else if (bytes > 4 && ! TARGET_POWERPC64)
{ /* move up to 8 bytes at a time */
move_bytes = (bytes > 8) ? 8 : bytes;
emit_insn (gen_movstrsi_2reg (expand_block_move_mem (BLKmode, dest_reg, orig_dest),
expand_block_move_mem (BLKmode, src_reg, orig_src),
emit_insn (gen_movstrsi_2reg (expand_block_move_mem (BLKmode,
dest_reg,
orig_dest),
expand_block_move_mem (BLKmode,
src_reg,
orig_src),
GEN_INT (move_bytes),
align_rtx));
}
else if (bytes >= 4 && (align >= 4 || !STRICT_ALIGNMENT))
else if (bytes >= 4 && (align >= 4 || ! STRICT_ALIGNMENT))
{ /* move 4 bytes */
move_bytes = 4;
tmp_reg = gen_reg_rtx (SImode);
emit_move_insn (tmp_reg, expand_block_move_mem (SImode, src_reg, orig_src));
emit_move_insn (expand_block_move_mem (SImode, dest_reg, orig_dest), tmp_reg);
emit_move_insn (tmp_reg,
expand_block_move_mem (SImode,
src_reg, orig_src));
emit_move_insn (expand_block_move_mem (SImode,
dest_reg, orig_dest),
tmp_reg);
}
else if (bytes == 2 && (align >= 2 || !STRICT_ALIGNMENT))
else if (bytes == 2 && (align >= 2 || ! STRICT_ALIGNMENT))
{ /* move 2 bytes */
move_bytes = 2;
tmp_reg = gen_reg_rtx (HImode);
emit_move_insn (tmp_reg, expand_block_move_mem (HImode, src_reg, orig_src));
emit_move_insn (expand_block_move_mem (HImode, dest_reg, orig_dest), tmp_reg);
emit_move_insn (tmp_reg,
expand_block_move_mem (HImode,
src_reg, orig_src));
emit_move_insn (expand_block_move_mem (HImode,
dest_reg, orig_dest),
tmp_reg);
}
else if (bytes == 1) /* move 1 byte */
{
move_bytes = 1;
tmp_reg = gen_reg_rtx (QImode);
emit_move_insn (tmp_reg, expand_block_move_mem (QImode, src_reg, orig_src));
emit_move_insn (expand_block_move_mem (QImode, dest_reg, orig_dest), tmp_reg);
emit_move_insn (tmp_reg,
expand_block_move_mem (QImode,
src_reg, orig_src));
emit_move_insn (expand_block_move_mem (QImode,
dest_reg, orig_dest),
tmp_reg);
}
else
{ /* move up to 4 bytes at a time */
move_bytes = (bytes > 4) ? 4 : bytes;
emit_insn (gen_movstrsi_1reg (expand_block_move_mem (BLKmode, dest_reg, orig_dest),
expand_block_move_mem (BLKmode, src_reg, orig_src),
emit_insn (gen_movstrsi_1reg (expand_block_move_mem (BLKmode,
dest_reg,
orig_dest),
expand_block_move_mem (BLKmode,
src_reg,
orig_src),
GEN_INT (move_bytes),
align_rtx));
}
if (bytes > move_bytes)
{
emit_insn (gen_addsi3 (src_reg, src_reg, GEN_INT (move_bytes)));
emit_insn (gen_addsi3 (dest_reg, dest_reg, GEN_INT (move_bytes)));
if (! TARGET_POWERPC64)
{
emit_insn (gen_addsi3 (src_reg, src_reg,
GEN_INT (move_bytes)));
emit_insn (gen_addsi3 (dest_reg, dest_reg,
GEN_INT (move_bytes)));
}
else
{
emit_insn (gen_adddi3 (src_reg, src_reg,
GEN_INT (move_bytes)));
emit_insn (gen_adddi3 (dest_reg, dest_reg,
GEN_INT (move_bytes)));
}
}
}
}
@ -2209,34 +2254,61 @@ expand_block_move (operands)
dest_addr = plus_constant (dest_reg, offset);
}
/* Generate the appropriate load and store, saving the stores for later */
if (bytes >= 8 && TARGET_64BIT && (align >= 8 || !STRICT_ALIGNMENT))
/* Generate the appropriate load and store, saving the stores
for later. */
if (bytes >= 8 && TARGET_POWERPC64
/* 64-bit loads and stores require word-aligned displacements. */
&& (align >= 8 || (! STRICT_ALIGNMENT && align >= 4)))
{
move_bytes = 8;
tmp_reg = gen_reg_rtx (DImode);
emit_insn (gen_movdi (tmp_reg, expand_block_move_mem (DImode, src_addr, orig_src)));
stores[ num_reg++ ] = gen_movdi (expand_block_move_mem (DImode, dest_addr, orig_dest), tmp_reg);
emit_insn (gen_movdi (tmp_reg,
expand_block_move_mem (DImode,
src_addr,
orig_src)));
stores[num_reg++] = gen_movdi (expand_block_move_mem (DImode,
dest_addr,
orig_dest),
tmp_reg);
}
else if (bytes >= 4 && (align >= 4 || !STRICT_ALIGNMENT))
else if (bytes >= 4 && (align >= 4 || ! STRICT_ALIGNMENT))
{
move_bytes = 4;
tmp_reg = gen_reg_rtx (SImode);
emit_insn (gen_movsi (tmp_reg, expand_block_move_mem (SImode, src_addr, orig_src)));
stores[ num_reg++ ] = gen_movsi (expand_block_move_mem (SImode, dest_addr, orig_dest), tmp_reg);
emit_insn (gen_movsi (tmp_reg,
expand_block_move_mem (SImode,
src_addr,
orig_src)));
stores[num_reg++] = gen_movsi (expand_block_move_mem (SImode,
dest_addr,
orig_dest),
tmp_reg);
}
else if (bytes >= 2 && (align >= 2 || !STRICT_ALIGNMENT))
else if (bytes >= 2 && (align >= 2 || ! STRICT_ALIGNMENT))
{
move_bytes = 2;
tmp_reg = gen_reg_rtx (HImode);
emit_insn (gen_movsi (tmp_reg, expand_block_move_mem (HImode, src_addr, orig_src)));
stores[ num_reg++ ] = gen_movhi (expand_block_move_mem (HImode, dest_addr, orig_dest), tmp_reg);
emit_insn (gen_movsi (tmp_reg,
expand_block_move_mem (HImode,
src_addr,
orig_src)));
stores[num_reg++] = gen_movhi (expand_block_move_mem (HImode,
dest_addr,
orig_dest),
tmp_reg);
}
else
{
move_bytes = 1;
tmp_reg = gen_reg_rtx (QImode);
emit_insn (gen_movsi (tmp_reg, expand_block_move_mem (QImode, src_addr, orig_src)));
stores[ num_reg++ ] = gen_movqi (expand_block_move_mem (QImode, dest_addr, orig_dest), tmp_reg);
emit_insn (gen_movsi (tmp_reg,
expand_block_move_mem (QImode,
src_addr,
orig_src)));
stores[num_reg++] = gen_movqi (expand_block_move_mem (QImode,
dest_addr,
orig_dest),
tmp_reg);
}
if (num_reg >= MAX_MOVE_REG)