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re PR rtl-optimization/37333 (ICE in ira_flattening, at ira-build.c:2146)

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2008-09-09  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-opt/37333
	
	* ira-build.c (ira_create_allocno): Setup frequency to 0.

	* ira-color.c (update_conflict_hard_regno_costs): Remove assert.
	Check zero freq and increase if necessary.

From-SVN: r140160
This commit is contained in:
Vladimir Makarov 2008-09-09 17:05:56 +00:00 committed by Vladimir Makarov
parent 496071caa6
commit 854bd721f8
3 changed files with 15 additions and 4 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2008-09-09 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-opt/37333
* ira-build.c (ira_create_allocno): Setup frequency to 0.
* ira-color.c (update_conflict_hard_regno_costs): Remove assert.
Check zero freq and increase if necessary.
2008-09-09 Vladimir Makarov <vmakarov@redhat.com>
* ira-conflicts.c (process_regs_for_copy): Check that the hard

2
gcc/ira-build.c
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@ -443,7 +443,7 @@ ira_create_allocno (int regno, bool cap_p, ira_loop_tree_node_t loop_tree_node)
COPY_HARD_REG_SET (ALLOCNO_CONFLICT_HARD_REGS (a), ira_no_alloc_regs);
COPY_HARD_REG_SET (ALLOCNO_TOTAL_CONFLICT_HARD_REGS (a), ira_no_alloc_regs);
ALLOCNO_NREFS (a) = 0;
ALLOCNO_FREQ (a) = 1;
ALLOCNO_FREQ (a) = 0;
ALLOCNO_HARD_REGNO (a) = -1;
ALLOCNO_CALL_FREQ (a) = 0;
ALLOCNO_CALLS_CROSSED_NUM (a) = 0;

8
gcc/ira-color.c
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@ -210,7 +210,7 @@ static void
update_conflict_hard_regno_costs (int *costs, ira_allocno_t allocno,
int divisor, bool decr_p)
{
int i, cost, class_size, mult, div;
int i, cost, class_size, freq, mult, div;
int *conflict_costs;
bool cont_p;
enum machine_mode mode;
@ -258,9 +258,11 @@ update_conflict_hard_regno_costs (int *costs, ira_allocno_t allocno,
cont_p = true;
else
{
ira_assert (ALLOCNO_FREQ (another_allocno) != 0);
mult = cp->freq;
div = ALLOCNO_FREQ (another_allocno) * divisor;
freq = ALLOCNO_FREQ (another_allocno);
if (freq == 0)
freq = 1;
div = freq * divisor;
cont_p = false;
for (i = class_size - 1; i >= 0; i--)
{