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re PR middle-end/45364 (Compiling wine's directx.c with -O1 -g takes a very long time) 

2014-01-28  Richard Biener  <rguenther@suse.de>

	PR rtl-optimization/45364
	PR rtl-optimization/59890
	* var-tracking.c (local_get_addr_clear_given_value): Handle
	already cleared slot.
	(val_reset): Handle not allocated local_get_addr_cache.
	(vt_find_locations): Use post-order on the inverted CFG.

From-SVN: r207172
This commit is contained in:
Richard Biener 2014-01-28 09:02:59 +00:00 committed by Richard Biener
parent 2ceb362d0a
commit 9ec2d2c168
2 changed files with 17 additions and 6 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2014-01-28 Richard Biener <rguenther@suse.de>
PR rtl-optimization/45364
PR rtl-optimization/59890
* var-tracking.c (local_get_addr_clear_given_value): Handle
already cleared slot.
(val_reset): Handle not allocated local_get_addr_cache.
(vt_find_locations): Use post-order on the inverted CFG.
2014-01-28 Alan Modra <amodra@gmail.com> 2014-01-28 Alan Modra <amodra@gmail.com>
* Makefile.in (BUILD_CPPFLAGS): Do not use ALL_CPPFLAGS. * Makefile.in (BUILD_CPPFLAGS): Do not use ALL_CPPFLAGS.

14
gcc/var-tracking.c
View File

@ -2481,7 +2481,8 @@ static bool
local_get_addr_clear_given_value (const void *v ATTRIBUTE_UNUSED, local_get_addr_clear_given_value (const void *v ATTRIBUTE_UNUSED,
void **slot, void *x) void **slot, void *x)
{ {
if (vt_get_canonicalize_base ((rtx)*slot) == x) if (*slot != NULL
&& vt_get_canonicalize_base ((rtx)*slot) == x)
*slot = NULL; *slot = NULL;
return true; return true;
} }
@ -2501,7 +2502,8 @@ val_reset (dataflow_set *set, decl_or_value dv)
gcc_assert (var->n_var_parts == 1); gcc_assert (var->n_var_parts == 1);
if (var->onepart == ONEPART_VALUE) if (var->onepart == ONEPART_VALUE
&& local_get_addr_cache != NULL)
{ {
rtx x = dv_as_value (dv); rtx x = dv_as_value (dv);
void **slot; void **slot;
@ -6934,12 +6936,12 @@ vt_find_locations (void)
bool success = true; bool success = true;
timevar_push (TV_VAR_TRACKING_DATAFLOW); timevar_push (TV_VAR_TRACKING_DATAFLOW);
/* Compute reverse completion order of depth first search of the CFG /* Compute reverse top sord order of the inverted CFG
so that the data-flow runs faster. */ so that the data-flow runs faster. */
rc_order = XNEWVEC (int, n_basic_blocks_for_fn (cfun) - NUM_FIXED_BLOCKS); rc_order = XNEWVEC (int, n_basic_blocks_for_fn (cfun));
bb_order = XNEWVEC (int, last_basic_block_for_fn (cfun)); bb_order = XNEWVEC (int, last_basic_block_for_fn (cfun));
pre_and_rev_post_order_compute (NULL, rc_order, false); int num = inverted_post_order_compute (rc_order);
for (i = 0; i < n_basic_blocks_for_fn (cfun) - NUM_FIXED_BLOCKS; i++) for (i = 0; i < num; i++)
bb_order[rc_order[i]] = i; bb_order[rc_order[i]] = i;
free (rc_order); free (rc_order);