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bitmap.c (bitmap_set_range): Handle count==1 specially. 

gcc/
	* bitmap.c (bitmap_set_range): Handle count==1 specially.
	(bitmap_clear_range): Likewise.
	* cfgcleanup.c (mark_effect): Use bitmap_clear_range and
	bitmap_set_range unconditionally.
	* df-problems.c (df_simulate_one_insn_forwards): Likewise.
	* df-scan.c (df_mark_reg): Likewise.
	* haifa-sched.c (setup_ref_regs): Likewise.
	* sched-rgn.c (update_live_1): Likewise.

From-SVN: r223344
This commit is contained in:
Richard Sandiford 2015-05-19 07:11:37 +00:00 committed by Richard Sandiford
parent 72d19505ee
commit 07a737f333
7 changed files with 32 additions and 40 deletions
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11
gcc/ChangeLog
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@ -1,3 +1,14 @@
2015-05-19 Richard Sandiford <richard.sandiford@arm.com>
* bitmap.c (bitmap_set_range): Handle count==1 specially.
(bitmap_clear_range): Likewise.
* cfgcleanup.c (mark_effect): Use bitmap_clear_range and
bitmap_set_range unconditionally.
* df-problems.c (df_simulate_one_insn_forwards): Likewise.
* df-scan.c (df_mark_reg): Likewise.
* haifa-sched.c (setup_ref_regs): Likewise.
* sched-rgn.c (update_live_1): Likewise.
2015-05-19 Richard Sandiford <richard.sandiford@arm.com>
* regs.h (END_HARD_REGNO): Delete.

12
gcc/bitmap.c
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@ -1212,6 +1212,12 @@ bitmap_set_range (bitmap head, unsigned int start, unsigned int count)
if (!count)
return;
if (count == 1)
{
bitmap_set_bit (head, start);
return;
}
first_index = start / BITMAP_ELEMENT_ALL_BITS;
end_bit_plus1 = start + count;
last_index = (end_bit_plus1 - 1) / BITMAP_ELEMENT_ALL_BITS;
@ -1311,6 +1317,12 @@ bitmap_clear_range (bitmap head, unsigned int start, unsigned int count)
if (!count)
return;
if (count == 1)
{
bitmap_clear_bit (head, start);
return;
}
first_index = start / BITMAP_ELEMENT_ALL_BITS;
end_bit_plus1 = start + count;
last_index = (end_bit_plus1 - 1) / BITMAP_ELEMENT_ALL_BITS;

19
gcc/cfgcleanup.c
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@ -222,22 +222,15 @@ try_simplify_condjump (basic_block cbranch_block)
static bool
mark_effect (rtx exp, regset nonequal)
{
int regno;
rtx dest;
switch (GET_CODE (exp))
{
/* In case we do clobber the register, mark it as equal, as we know the
value is dead so it don't have to match. */
case CLOBBER:
if (REG_P (XEXP (exp, 0)))
{
dest = XEXP (exp, 0);
regno = REGNO (dest);
if (HARD_REGISTER_NUM_P (regno))
bitmap_clear_range (nonequal, regno, REG_NREGS (dest));
else
bitmap_clear_bit (nonequal, regno);
}
dest = XEXP (exp, 0);
if (REG_P (dest))
bitmap_clear_range (nonequal, REGNO (dest), REG_NREGS (dest));
return false;
case SET:
@ -248,11 +241,7 @@ mark_effect (rtx exp, regset nonequal)
return false;
if (!REG_P (dest))
return true;
regno = REGNO (dest);
if (HARD_REGISTER_NUM_P (regno))
bitmap_set_range (nonequal, regno, REG_NREGS (dest));
else
bitmap_set_bit (nonequal, regno);
bitmap_set_range (nonequal, REGNO (dest), REG_NREGS (dest));
return false;
default:

6
gcc/df-problems.c
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@ -3574,11 +3574,7 @@ df_simulate_one_insn_forwards (basic_block bb, rtx_insn *insn, bitmap live)
case REG_UNUSED:
{
rtx reg = XEXP (link, 0);
int regno = REGNO (reg);
if (HARD_REGISTER_NUM_P (regno))
bitmap_clear_range (live, regno, REG_NREGS (reg));
else
bitmap_clear_bit (live, regno);
bitmap_clear_range (live, REGNO (reg), REG_NREGS (reg));
}
break;
default:

10
gcc/df-scan.c
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@ -3518,15 +3518,7 @@ df_get_eh_block_artificial_uses (bitmap eh_block_artificial_uses)
static void
df_mark_reg (rtx reg, void *vset)
{
bitmap set = (bitmap) vset;
int regno = REGNO (reg);
gcc_assert (GET_MODE (reg) != BLKmode);
if (regno < FIRST_PSEUDO_REGISTER)
bitmap_set_range (set, regno, REG_NREGS (reg));
else
bitmap_set_bit (set, regno);
bitmap_set_range ((bitmap) vset, REGNO (reg), REG_NREGS (reg));
}

8
gcc/haifa-sched.c
View File

@ -1032,17 +1032,13 @@ initiate_reg_pressure_info (bitmap live)
static void
setup_ref_regs (rtx x)
{
int i, j, regno;
int i, j;
const RTX_CODE code = GET_CODE (x);
const char *fmt;
if (REG_P (x))
{
regno = REGNO (x);
if (HARD_REGISTER_NUM_P (regno))
bitmap_set_range (region_ref_regs, regno, REG_NREGS (x));
else
bitmap_set_bit (region_ref_regs, REGNO (x));
bitmap_set_range (region_ref_regs, REGNO (x), REG_NREGS (x));
return;
}
fmt = GET_RTX_FORMAT (code);

6
gcc/sched-rgn.c
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@ -1801,11 +1801,7 @@ update_live_1 (int src, rtx x)
for (i = 0; i < candidate_table[src].update_bbs.nr_members; i++)
{
basic_block b = candidate_table[src].update_bbs.first_member[i];
if (HARD_REGISTER_NUM_P (regno))
bitmap_set_range (df_get_live_in (b), regno, REG_NREGS (reg));
else
bitmap_set_bit (df_get_live_in (b), regno);
bitmap_set_range (df_get_live_in (b), regno, REG_NREGS (reg));
}
}
}