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| author | Zdenek Dvorak <rakdver@gcc.gnu.org> | 2006-05-24 22:55:15 +0000 |
|---|---|---|
| committer | Zdenek Dvorak <rakdver@gcc.gnu.org> | 2006-05-24 22:55:15 +0000 |
| commit | d7f5de76fdc534c7eb7bb532b212936665ec2080 (patch) | |
| tree | 1cb568e88ce4a846caaddba12bd18eb12329f4b8 /gcc/tree-flow.h | |
| parent | 91f8ce668b14d42e1bcbead322f869009fc896f0 (diff) | |
| download | gcc-d7f5de76fdc534c7eb7bb532b212936665ec2080.zip gcc-d7f5de76fdc534c7eb7bb532b212936665ec2080.tar.gz gcc-d7f5de76fdc534c7eb7bb532b212936665ec2080.tar.bz2 | |
re PR tree-optimization/27639 (VRP miscompilation of simple loop)
PR tree-optimization/27639
PR tree-optimization/26719
* tree-vrp.c (adjust_range_with_scev): Use scev_direction and adjust
call to scev_probably_wraps_p.
* tree-ssa-loop-niter.c (compare_trees, convert_step_widening,
used_in_pointer_arithmetic_p, convert_step): Removed.
(nowrap_type_p): New function.
(scev_probably_wraps_p): Rewritten.
* tree-scalar-evolution.c (instantiate_parameters_1): Do not call
chrec_convert if chrec_convert_aggressive might have been used.
* tree-chrec.c (convert_affine_scev, chrec_convert_1,
scev_direction): New functions.
(chrec_convert): Changed to a wrapper over chrec_convert_1.
* tree-ssa-loop-ivopts.c (idx_find_step): Use convert_affine_scev
instead of convert_step.
* tree-flow.h (scev_probably_wraps_p): Declaration changed.
(convert_step): Declaration removed.
(convert_affine_scev, nowrap_type_p, scev_direction): Declare.
* gcc.dg/pr27639.c: New test.
* gcc.dg/pr26719.c: New test.
* gcc.dg/tree-ssa/scev-cast.c: New test.
From-SVN: r114057
Diffstat (limited to 'gcc/tree-flow.h')
| -rw-r--r-- | gcc/tree-flow.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/gcc/tree-flow.h b/gcc/tree-flow.h index 1bd3237..8563402 100644 --- a/gcc/tree-flow.h +++ b/gcc/tree-flow.h @@ -810,9 +810,13 @@ tree find_loop_niter (struct loop *, edge *); tree loop_niter_by_eval (struct loop *, edge); tree find_loop_niter_by_eval (struct loop *, edge *); void estimate_numbers_of_iterations (struct loops *); -bool scev_probably_wraps_p (tree, tree, tree, tree, struct loop *, bool *, - bool *); -tree convert_step (struct loop *, tree, tree, tree, tree); +bool scev_probably_wraps_p (tree, tree, tree, struct loop *, bool); +bool convert_affine_scev (struct loop *, tree, tree *, tree *, tree, bool); + +bool nowrap_type_p (tree); +enum ev_direction {EV_DIR_GROWS, EV_DIR_DECREASES, EV_DIR_UNKNOWN}; +enum ev_direction scev_direction (tree); + void free_numbers_of_iterations_estimates (struct loops *); void free_numbers_of_iterations_estimates_loop (struct loop *); void rewrite_into_loop_closed_ssa (bitmap, unsigned); |