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* config/xtensa-relax.c (widen_spec_list): Use new "WIDE.<opcode>"

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syntax instead of hardcoded opcodes with ".w18" suffixes.
	(wide_branch_opcode): New.
	(build_transition): Use it to check for wide branch opcodes with
	either ".w18" or ".w15" suffixes.
This commit is contained in:
Bob Wilson 2006-04-25 17:11:10 +00:00
parent 5033a6459b
commit 1946c96e94
2 changed files with 65 additions and 26 deletions
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8
gas/ChangeLog
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@ -1,3 +1,11 @@
2006-04-25 Bob Wilson <bob.wilson@acm.org>
* config/xtensa-relax.c (widen_spec_list): Use new "WIDE.<opcode>"
syntax instead of hardcoded opcodes with ".w18" suffixes.
(wide_branch_opcode): New.
(build_transition): Use it to check for wide branch opcodes with
either ".w18" or ".w15" suffixes.
2006-04-25 Bob Wilson <bob.wilson@acm.org>
* config/tc-xtensa.c (xtensa_create_literal_symbol,

83
gas/config/xtensa-relax.c
View File

@ -349,30 +349,30 @@ static string_pattern_pair widen_spec_list[] =
table since they are more efficient than the branch-around
relaxations. */
{"beqz %as,%label ? IsaUseWideBranches", "beqz.w18 %as,%label"},
{"bnez %as,%label ? IsaUseWideBranches", "bnez.w18 %as,%label"},
{"bgez %as,%label ? IsaUseWideBranches", "bgez.w18 %as,%label"},
{"bltz %as,%label ? IsaUseWideBranches", "bltz.w18 %as,%label"},
{"beqi %as,%imm,%label ? IsaUseWideBranches", "beqi.w18 %as,%imm,%label"},
{"bnei %as,%imm,%label ? IsaUseWideBranches", "bnei.w18 %as,%imm,%label"},
{"bgei %as,%imm,%label ? IsaUseWideBranches", "bgei.w18 %as,%imm,%label"},
{"blti %as,%imm,%label ? IsaUseWideBranches", "blti.w18 %as,%imm,%label"},
{"bgeui %as,%imm,%label ? IsaUseWideBranches", "bgeui.w18 %as,%imm,%label"},
{"bltui %as,%imm,%label ? IsaUseWideBranches", "bltui.w18 %as,%imm,%label"},
{"bbci %as,%imm,%label ? IsaUseWideBranches", "bbci.w18 %as,%imm,%label"},
{"bbsi %as,%imm,%label ? IsaUseWideBranches", "bbsi.w18 %as,%imm,%label"},
{"beq %as,%at,%label ? IsaUseWideBranches", "beq.w18 %as,%at,%label"},
{"bne %as,%at,%label ? IsaUseWideBranches", "bne.w18 %as,%at,%label"},
{"bge %as,%at,%label ? IsaUseWideBranches", "bge.w18 %as,%at,%label"},
{"blt %as,%at,%label ? IsaUseWideBranches", "blt.w18 %as,%at,%label"},
{"bgeu %as,%at,%label ? IsaUseWideBranches", "bgeu.w18 %as,%at,%label"},
{"bltu %as,%at,%label ? IsaUseWideBranches", "bltu.w18 %as,%at,%label"},
{"bany %as,%at,%label ? IsaUseWideBranches", "bany.w18 %as,%at,%label"},
{"bnone %as,%at,%label ? IsaUseWideBranches", "bnone.w18 %as,%at,%label"},
{"ball %as,%at,%label ? IsaUseWideBranches", "ball.w18 %as,%at,%label"},
{"bnall %as,%at,%label ? IsaUseWideBranches", "bnall.w18 %as,%at,%label"},
{"bbc %as,%at,%label ? IsaUseWideBranches", "bbc.w18 %as,%at,%label"},
{"bbs %as,%at,%label ? IsaUseWideBranches", "bbs.w18 %as,%at,%label"},
{"beqz %as,%label ? IsaUseWideBranches", "WIDE.beqz %as,%label"},
{"bnez %as,%label ? IsaUseWideBranches", "WIDE.bnez %as,%label"},
{"bgez %as,%label ? IsaUseWideBranches", "WIDE.bgez %as,%label"},
{"bltz %as,%label ? IsaUseWideBranches", "WIDE.bltz %as,%label"},
{"beqi %as,%imm,%label ? IsaUseWideBranches", "WIDE.beqi %as,%imm,%label"},
{"bnei %as,%imm,%label ? IsaUseWideBranches", "WIDE.bnei %as,%imm,%label"},
{"bgei %as,%imm,%label ? IsaUseWideBranches", "WIDE.bgei %as,%imm,%label"},
{"blti %as,%imm,%label ? IsaUseWideBranches", "WIDE.blti %as,%imm,%label"},
{"bgeui %as,%imm,%label ? IsaUseWideBranches", "WIDE.bgeui %as,%imm,%label"},
{"bltui %as,%imm,%label ? IsaUseWideBranches", "WIDE.bltui %as,%imm,%label"},
{"bbci %as,%imm,%label ? IsaUseWideBranches", "WIDE.bbci %as,%imm,%label"},
{"bbsi %as,%imm,%label ? IsaUseWideBranches", "WIDE.bbsi %as,%imm,%label"},
{"beq %as,%at,%label ? IsaUseWideBranches", "WIDE.beq %as,%at,%label"},
{"bne %as,%at,%label ? IsaUseWideBranches", "WIDE.bne %as,%at,%label"},
{"bge %as,%at,%label ? IsaUseWideBranches", "WIDE.bge %as,%at,%label"},
{"blt %as,%at,%label ? IsaUseWideBranches", "WIDE.blt %as,%at,%label"},
{"bgeu %as,%at,%label ? IsaUseWideBranches", "WIDE.bgeu %as,%at,%label"},
{"bltu %as,%at,%label ? IsaUseWideBranches", "WIDE.bltu %as,%at,%label"},
{"bany %as,%at,%label ? IsaUseWideBranches", "WIDE.bany %as,%at,%label"},
{"bnone %as,%at,%label ? IsaUseWideBranches", "WIDE.bnone %as,%at,%label"},
{"ball %as,%at,%label ? IsaUseWideBranches", "WIDE.ball %as,%at,%label"},
{"bnall %as,%at,%label ? IsaUseWideBranches", "WIDE.bnall %as,%at,%label"},
{"bbc %as,%at,%label ? IsaUseWideBranches", "WIDE.bbc %as,%at,%label"},
{"bbs %as,%at,%label ? IsaUseWideBranches", "WIDE.bbs %as,%at,%label"},
/* Widening branch comparisons eq/ne to zero. Prefer relaxing to narrow
branches if the density option is available. */
@ -1554,6 +1554,31 @@ transition_applies (insn_pattern *initial_insn,
}
static bfd_boolean
wide_branch_opcode (const char *opcode_name,
char *suffix,
xtensa_opcode *popcode)
{
xtensa_isa isa = xtensa_default_isa;
xtensa_opcode opcode;
static char wbr_name_buf[20];
if (strncmp (opcode_name, "WIDE.", 5) != 0)
return FALSE;
strcpy (wbr_name_buf, opcode_name + 5);
strcat (wbr_name_buf, suffix);
opcode = xtensa_opcode_lookup (isa, wbr_name_buf);
if (opcode != XTENSA_UNDEFINED)
{
*popcode = opcode;
return TRUE;
}
return FALSE;
}
static TransitionRule *
build_transition (insn_pattern *initial_insn,
insn_repl *replace_insns,
@ -1731,13 +1756,19 @@ build_transition (insn_pattern *initial_insn,
else
{
bi->typ = INSTR_INSTR;
bi->opcode = xtensa_opcode_lookup (isa, r->t.opcode_name);
if (wide_branch_opcode (opcode_name, ".w18", &bi->opcode)
|| wide_branch_opcode (opcode_name, ".w15", &bi->opcode))
opcode_name = xtensa_opcode_name (isa, bi->opcode);
else
bi->opcode = xtensa_opcode_lookup (isa, opcode_name);
if (bi->opcode == XTENSA_UNDEFINED)
{
as_warn (_("invalid opcode '%s' in transition rule '%s'"),
r->t.opcode_name, to_string);
opcode_name, to_string);
return NULL;
}
/* Check for the right number of ops. */
if (xtensa_opcode_num_operands (isa, bi->opcode)
!= (int) operand_count)