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| author | Andrew Pinski <andrew_pinski@playstation.sony.com> | 2008-09-16 16:21:35 +0000 |
|---|---|---|
| committer | Andrew Pinski <pinskia@gcc.gnu.org> | 2008-09-16 09:21:35 -0700 |
| commit | b9ff60795bf891e640a88d02971fc8c578708736 (patch) | |
| tree | 2d4989f9f992824ba8ea670dc503c2e5be4f7b2a /gcc | |
| parent | d573123d17fb48ec675aa25f4e8a9754d876228c (diff) | |
| download | gcc-b9ff60795bf891e640a88d02971fc8c578708736.zip gcc-b9ff60795bf891e640a88d02971fc8c578708736.tar.gz gcc-b9ff60795bf891e640a88d02971fc8c578708736.tar.bz2 | |
re PR rtl-optimization/37263 (extra code for doloop with unsigned 32bit types on LP64)
2008-09-16 Andrew Pinski <andrew_pinski@playstation.sony.com>
PR middle-end/37263
* tree-ssa-loop-ivopts.c (determine_use_iv_cost_condition): Prefer the
eliminate IV if the cost are the same.
From-SVN: r140395
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/tree-ssa-loop-ivopts.c | 4 |
2 files changed, 8 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ff6e245..a419a8f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2008-09-16 Andrew Pinski <andrew_pinski@playstation.sony.com> + + PR middle-end/37263 + * tree-ssa-loop-ivopts.c (determine_use_iv_cost_condition): Prefer the + eliminate IV if the cost are the same. + 2008-09-16 Richard Guenther <rguenther@suse.de> PR middle-end/37380 diff --git a/gcc/tree-ssa-loop-ivopts.c b/gcc/tree-ssa-loop-ivopts.c index 341f41c..4639588 100644 --- a/gcc/tree-ssa-loop-ivopts.c +++ b/gcc/tree-ssa-loop-ivopts.c @@ -3880,8 +3880,8 @@ determine_use_iv_cost_condition (struct ivopts_data *data, fd_ivopts_data = data; walk_tree (&cmp_iv->base, find_depends, &depends_on_express, NULL); - /* Choose the better approach. */ - if (compare_costs (elim_cost, express_cost) < 0) + /* Choose the better approach, preferring the eliminated IV. */ + if (compare_costs (elim_cost, express_cost) <= 0) { cost = elim_cost; depends_on = depends_on_elim; |