FreeChainXenon/gcc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

re PR middle-end/63155 (memory hog)

Browse source 
2018-09-24  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/63155
	* tree-ssa-propagate.c (add_ssa_edge): Avoid adding PHIs to
	the worklist when the edge of the respective argument isn't
	executable.

From-SVN: r264523
This commit is contained in:
Richard Biener 2018-09-24 07:08:24 +00:00 • committed by Richard Biener
parent e528260d8f
commit e78c3eb320
2 changed files with 16 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
gcc/ChangeLog
View file

@ -1,3 +1,10 @@
2018-09-24 Richard Biener <rguenther@suse.de>
PR tree-optimization/63155
* tree-ssa-propagate.c (add_ssa_edge): Avoid adding PHIs to
the worklist when the edge of the respective argument isn't
executable.
2018-09-23 Uros Bizjak <ubizjak@gmail.com>
* config/i386/i386.h (enum reg_class): Rename MASK_REGS to

10
gcc/tree-ssa-propagate.c
View file

@ -168,10 +168,18 @@ add_ssa_edge (tree var)
FOR_EACH_IMM_USE_FAST (use_p, iter, var)
{
gimple *use_stmt = USE_STMT (use_p);
basic_block use_bb = gimple_bb (use_stmt);
/* If we did not yet simulate the block wait for this to happen
and do not add the stmt to the SSA edge worklist. */
if (! (gimple_bb (use_stmt)->flags & BB_VISITED))
if (! (use_bb->flags & BB_VISITED))
continue;
/* If this is a use on a not yet executable edge do not bother to
queue it. */
if (gimple_code (use_stmt) == GIMPLE_PHI
&& !(EDGE_PRED (use_bb, PHI_ARG_INDEX_FROM_USE (use_p))->flags
& EDGE_EXECUTABLE))
continue;
if (prop_simulate_again_p (use_stmt)