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m32r.c (m32r_expand_block_move): Return 0 if nothing was done.

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* config/m32r/m32r.c (m32r_expand_block_move):  Return 0 if nothing was done.
* config/m32r/m32r.md (movmemsi):  If m32r_expand_block_move did nothing then FAIL.
* config/m32r/m32r/m32r-protos.h  (m32r_expand_block_move): Update prototype.

From-SVN: r100095
This commit is contained in:
Kazuhiro Inaoka 2005-05-24 07:45:24 +00:00 committed by Nick Clifton
parent 37495922d7
commit 0be4693a48
4 changed files with 22 additions and 8 deletions
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9
gcc/ChangeLog
View File

@ -1,3 +1,12 @@
2005-05-24 Kazuhiro Inaoka <inaoka.kazuhiro@renesas.com>
* config/m32r/m32r.c (m32r_expand_block_move): Return 0 if
nothing was done.
* config/m32r/m32r.md (movmemsi): If m32r_expand_block_move did
nothing then FAIL.
* config/m32r/m32r/m32r-protos.h (m32r_expand_block_move): Update
prototype.
2005-05-23 Jeff Law <law@redhat.com>
* tree-ssa-dom.c (cprop_into_stmt): Do not call

2
gcc/config/m32r/m32r-protos.h
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@ -47,7 +47,7 @@ extern void m32r_initialize_trampoline (rtx, rtx, rtx);
extern int zero_and_one (rtx, rtx);
extern char * emit_cond_move (rtx *, rtx);
extern void m32r_output_block_move (rtx, rtx *);
extern void m32r_expand_block_move (rtx *);
extern int m32r_expand_block_move (rtx *);
extern void m32r_print_operand (FILE *, rtx, int);
extern void m32r_print_operand_address (FILE *, rtx);
extern int m32r_not_same_reg (rtx, rtx);

11
gcc/config/m32r/m32r.c
View File

@ -2201,9 +2201,11 @@ block_move_call (rtx dest_reg, rtx src_reg, rtx bytes_rtx)
operands[0] is the pointer to the destination.
operands[1] is the pointer to the source.
operands[2] is the number of bytes to move.
operands[3] is the alignment. */
operands[3] is the alignment.
void
Returns 1 upon success, 0 otherwise. */
int
m32r_expand_block_move (rtx operands[])
{
rtx orig_dst = operands[0];
@ -2218,7 +2220,7 @@ m32r_expand_block_move (rtx operands[])
rtx dst_reg;
if (constp && bytes <= 0)
return;
return 1;
/* Move the address into scratch registers. */
dst_reg = copy_addr_to_reg (XEXP (orig_dst, 0));
@ -2233,7 +2235,7 @@ m32r_expand_block_move (rtx operands[])
if (optimize_size || ! constp || align != UNITS_PER_WORD)
{
block_move_call (dst_reg, src_reg, bytes_rtx);
return;
return 0;
}
leftover = bytes % MAX_MOVE_BYTES;
@ -2290,6 +2292,7 @@ m32r_expand_block_move (rtx operands[])
emit_insn (gen_movmemsi_internal (dst_reg, src_reg, GEN_INT (leftover),
gen_reg_rtx (SImode),
gen_reg_rtx (SImode)));
return 1;
}

8
gcc/config/m32r/m32r.md
View File

@ -2542,10 +2542,12 @@
""
"
{
if (operands[0]) /* avoid unused code messages */
if (operands[0]) /* Avoid unused code messages. */
{
m32r_expand_block_move (operands);
DONE;
if (m32r_expand_block_move (operands))
DONE;
else
FAIL;
}
}")