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re PR target/43358 (IRA: internal compiler error: in pool_free, at alloc-pool.c:335)

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gcc/
	PR rtl-optimization/43358
	* ira-lives.c (process_single_reg_class_operands): Adjust the costs
	of a single hard register, using simplify_subreg_regno to decide
	what that register should be.

From-SVN: r163249
This commit is contained in:
Richard Sandiford 2010-08-14 19:59:13 +00:00 • committed by Richard Sandiford
parent 73a949c0ba
commit 6d1e1a26d9
2 changed files with 42 additions and 21 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2010-08-14 Richard Sandiford <rdsandiford@googlemail.com>
PR rtl-optimization/43358
* ira-lives.c (process_single_reg_class_operands): Adjust the costs
of a single hard register, using simplify_subreg_regno to decide
what that register should be.
2010-08-14 Mingjie Xing <mingjie.xing@gmail.com>
* config/mips/mips.c (CODE_FOR_loongson_pmullh): Define.

56
gcc/ira-lives.c
View file

@ -897,7 +897,7 @@ ira_implicitly_set_insn_hard_regs (HARD_REG_SET *set)
static void
process_single_reg_class_operands (bool in_p, int freq)
{
int i, regno, cost;
int i, regno;
unsigned int px;
enum reg_class cl;
rtx operand;
@ -924,32 +924,46 @@ process_single_reg_class_operands (bool in_p, int freq)
if (REG_P (operand)
&& (regno = REGNO (operand)) >= FIRST_PSEUDO_REGISTER)
{
enum machine_mode mode;
enum reg_class cover_class;
operand_a = ira_curr_regno_allocno_map[regno];
mode = ALLOCNO_MODE (operand_a);
cover_class = ALLOCNO_COVER_CLASS (operand_a);
if (ira_class_subset_p[cl][cover_class]
&& ira_class_hard_regs_num[cl] != 0
&& (ira_class_hard_reg_index[cover_class]
[ira_class_hard_regs[cl][0]]) >= 0
&& reg_class_size[cl] <= (unsigned) CLASS_MAX_NREGS (cl, mode))
&& ira_class_hard_regs_num[cl] != 0)
{
int i, size;
cost
= (freq
* (in_p
? ira_get_register_move_cost (mode, cover_class, cl)
: ira_get_register_move_cost (mode, cl, cover_class)));
ira_allocate_and_set_costs
(&ALLOCNO_CONFLICT_HARD_REG_COSTS (operand_a), cover_class, 0);
size = ira_reg_class_nregs[cover_class][mode];
for (i = 0; i < size; i++)
ALLOCNO_CONFLICT_HARD_REG_COSTS (operand_a)
[ira_class_hard_reg_index
[cover_class][ira_class_hard_regs[cl][i]]]
-= cost;
/* View the desired allocation of OPERAND as:
(REG:YMODE YREGNO),
a simplification of:
(subreg:YMODE (reg:XMODE XREGNO) OFFSET). */
enum machine_mode ymode, xmode;
int xregno, yregno;
HOST_WIDE_INT offset;
xmode = recog_data.operand_mode[i];
xregno = ira_class_hard_regs[cl][0];
ymode = ALLOCNO_MODE (operand_a);
offset = subreg_lowpart_offset (ymode, xmode);
yregno = simplify_subreg_regno (xregno, xmode, offset, ymode);
if (yregno >= 0
&& ira_class_hard_reg_index[cover_class][yregno] >= 0)
{
int cost;
ira_allocate_and_set_costs
(&ALLOCNO_CONFLICT_HARD_REG_COSTS (operand_a),
cover_class, 0);
cost
= (freq
* (in_p
? ira_get_register_move_cost (xmode, cover_class, cl)
: ira_get_register_move_cost (xmode, cl,
cover_class)));
ALLOCNO_CONFLICT_HARD_REG_COSTS (operand_a)
[ira_class_hard_reg_index[cover_class][yregno]] -= cost;
}
}
}