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| author | Richard Biener <rguenther@suse.de> | 2017-06-26 07:19:37 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2017-06-26 07:19:37 +0000 |
| commit | 25853b33482749fb6a07336ea3790a45cc1752f7 (patch) | |
| tree | fb16b8aa818baf168138b04424264d43e2164300 /gcc/tree-ssa-phionlycprop.c | |
| parent | ddc36d5a1def2504956a9b40f31f09c5873e6349 (diff) | |
| download | gcc-25853b33482749fb6a07336ea3790a45cc1752f7.zip gcc-25853b33482749fb6a07336ea3790a45cc1752f7.tar.gz gcc-25853b33482749fb6a07336ea3790a45cc1752f7.tar.bz2 | |
re PR tree-optimization/80928 (SLP vectorization does not handle induction in outer loop vectorization)
2017-06-26 Richard Biener <rguenther@suse.de>
PR tree-optimization/80928
* cfghooks.c (duplicate_block): Do not copy BB_DUPLICATED flag.
(copy_bbs): Set BB_DUPLICATED flag early.
(execute_on_growing_pred): Do not execute for BB_DUPLICATED
marked blocks.
(execute_on_shrinking_pred): Likewise.
* tree-ssa.c (ssa_redirect_edge): Do not look for PHI args in
BB_DUPLICATED blocks.
* tree-ssa-phionlycoprop.c (eliminate_degenerate_phis_1): Properly
iterate over all PHIs considering removal of *gsi.
From-SVN: r249638
Diffstat (limited to 'gcc/tree-ssa-phionlycprop.c')
| -rw-r--r-- | gcc/tree-ssa-phionlycprop.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/gcc/tree-ssa-phionlycprop.c b/gcc/tree-ssa-phionlycprop.c index aa0f502..9fa427f 100644 --- a/gcc/tree-ssa-phionlycprop.c +++ b/gcc/tree-ssa-phionlycprop.c @@ -420,10 +420,11 @@ eliminate_degenerate_phis_1 (basic_block bb, bitmap interesting_names, basic_block son; bool cfg_altered = false; - for (gsi = gsi_start_phis (bb); !gsi_end_p (gsi); gsi_next (&gsi)) + for (gsi = gsi_start_phis (bb); !gsi_end_p (gsi);) { gphi *phi = gsi.phi (); - + /* We might end up removing PHI so advance the iterator now. */ + gsi_next (&gsi); cfg_altered |= eliminate_const_or_copy (phi, interesting_names, need_eh_cleanup); } |