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sh.md (insv): Use copy_addr_to_reg.

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* sh.md (insv): Use copy_addr_to_reg.
	* final.c (insn_lengths_max_uid) New variable.
	(init_insn_lengths, shorten_branches): Set it.
	(get_attr_lengths): Test insn uid against insn_lengths_max_uid.

From-SVN: r26676
This commit is contained in:
J"orn Rennecke 1999-04-27 12:23:20 +00:00 committed by Joern Rennecke
parent f915e937d9
commit ea3cbda501
3 changed files with 15 additions and 3 deletions
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8
gcc/ChangeLog
View File

@ -1,3 +1,11 @@
Tue Apr 27 20:19:47 1999 J"orn Rennecke <amylaar@cygnus.co.uk>
* sh.md (insv): Use copy_addr_to_reg.
* final.c (insn_lengths_max_uid) New variable.
(init_insn_lengths, shorten_branches): Set it.
(get_attr_lengths): Test insn uid against insn_lengths_max_uid.
1999-04-27 08:32 -0400 Zack Weinberg <zack@rabi.columbia.edu>
* expr.c (emit_move_insn_1): Abort if MODE argument is invalid.

3
gcc/config/sh/sh.md
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@ -4414,10 +4414,9 @@
size /= 8;
orig_address = XEXP (operands[0], 0);
addr_target = gen_reg_rtx (SImode);
shift_reg = gen_reg_rtx (SImode);
emit_insn (gen_movsi (shift_reg, operands[3]));
emit_insn (gen_addsi3 (addr_target, orig_address, GEN_INT (size - 1)));
addr_target = copy_addr_to_reg (plus_constant (orig_address, size - 1));
operands[0] = change_address (operands[0], QImode, addr_target);
emit_insn (gen_movqi (operands[0], gen_rtx (SUBREG, QImode, shift_reg, 0)));

7
gcc/final.c
View File

@ -627,6 +627,9 @@ dbr_sequence_length ()
static short *insn_lengths;
int *insn_addresses;
/* Max uid for which the above arrays are valid. */
static int insn_lengths_max_uid;
/* Address of insn being processed. Used by `insn_current_length'. */
int insn_current_address;
@ -673,6 +676,7 @@ init_insn_lengths ()
{
free (insn_lengths);
insn_lengths = 0;
insn_lengths_max_uid = 0;
}
if (insn_addresses)
{
@ -698,7 +702,7 @@ get_attr_length (insn)
int i;
int length = 0;
if (insn_lengths)
if (insn_lengths_max_uid > INSN_UID (insn))
return insn_lengths[INSN_UID (insn)];
else
switch (GET_CODE (insn))
@ -1128,6 +1132,7 @@ shorten_branches (first)
/* Allocate the rest of the arrays. */
insn_lengths = (short *) xmalloc (max_uid * sizeof (short));
insn_addresses = (int *) xmalloc (max_uid * sizeof (int));
insn_lengths_max_uid = max_uid;
/* Syntax errors can lead to labels being outside of the main insn stream.
Initialize insn_addresses, so that we get reproducible results. */
bzero ((char *)insn_addresses, max_uid * sizeof *insn_addresses);