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postreload.c (reload_combine): Call control_flow_insn_p only once.

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* postreload.c (reload_combine): Call control_flow_insn_p only once.
	Reverse backward loop.  Fix formatting issues.

From-SVN: r166878
This commit is contained in:
Eric Botcazou 2010-11-17 21:10:19 +00:00 committed by Eric Botcazou
parent a6759a8a0b
commit 7ad93142a8
2 changed files with 19 additions and 15 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2010-11-17 Eric Botcazou <ebotcazou@adacore.com>
* postreload.c (reload_combine): Call control_flow_insn_p only once.
Reverse backward loop. Fix formatting issues.
2010-11-17 Paolo Bonzini <bonzini@gnu.org>
* c-parser.c (c_token_is_qualifier,

29
gcc/postreload.c
View File

@ -1224,7 +1224,6 @@ static void
reload_combine (void)
{
rtx insn, prev;
int i;
basic_block bb;
unsigned int r;
int min_labelno, n_labels;
@ -1292,6 +1291,7 @@ reload_combine (void)
for (insn = get_last_insn (); insn; insn = prev)
{
bool control_flow_insn;
rtx note;
prev = PREV_INSN (insn);
@ -1311,7 +1311,8 @@ reload_combine (void)
reload_combine_ruid++;
if (control_flow_insn_p (insn))
control_flow_insn = control_flow_insn_p (insn);
if (control_flow_insn)
last_jump_ruid = reload_combine_ruid;
if (reload_combine_recognize_const_pattern (insn)
@ -1339,9 +1340,9 @@ reload_combine (void)
{
unsigned int i;
unsigned int start_reg = REGNO (usage_rtx);
unsigned int num_regs =
hard_regno_nregs[start_reg][GET_MODE (usage_rtx)];
unsigned int end_reg = start_reg + num_regs - 1;
unsigned int num_regs
= hard_regno_nregs[start_reg][GET_MODE (usage_rtx)];
unsigned int end_reg = start_reg + num_regs - 1;
for (i = start_reg; i <= end_reg; i++)
if (GET_CODE (XEXP (link, 0)) == CLOBBER)
{
@ -1352,10 +1353,9 @@ reload_combine (void)
reg_state[i].use_index = -1;
}
}
}
if (control_flow_insn_p (insn) && GET_CODE (PATTERN (insn)) != RETURN)
if (control_flow_insn && GET_CODE (PATTERN (insn)) != RETURN)
{
/* Non-spill registers might be used at the call destination in
some unknown fashion, so we have to mark the unknown use. */
@ -1367,20 +1367,19 @@ reload_combine (void)
else
live = &ever_live_at_start;
for (i = FIRST_PSEUDO_REGISTER - 1; i >= 0; --i)
if (TEST_HARD_REG_BIT (*live, i))
reg_state[i].use_index = -1;
for (r = 0; r < FIRST_PSEUDO_REGISTER; r++)
if (TEST_HARD_REG_BIT (*live, r))
reg_state[r].use_index = -1;
}
reload_combine_note_use (&PATTERN (insn), insn,
reload_combine_ruid, NULL_RTX);
reload_combine_note_use (&PATTERN (insn), insn, reload_combine_ruid,
NULL_RTX);
for (note = REG_NOTES (insn); note; note = XEXP (note, 1))
{
if (REG_NOTE_KIND (note) == REG_INC
&& REG_P (XEXP (note, 0)))
if (REG_NOTE_KIND (note) == REG_INC && REG_P (XEXP (note, 0)))
{
int regno = REGNO (XEXP (note, 0));
reg_state[regno].store_ruid = reload_combine_ruid;
reg_state[regno].real_store_ruid = reload_combine_ruid;
reg_state[regno].use_index = -1;