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| author | Zdenek Dvorak <rakdver@gcc.gnu.org> | 2004-09-25 11:06:43 +0000 |
|---|---|---|
| committer | Zdenek Dvorak <rakdver@gcc.gnu.org> | 2004-09-25 11:06:43 +0000 |
| commit | f34fa464bb843234b1ca23c752ce8cb2207b9dff (patch) | |
| tree | 94519e6887d55fa32512e268b6a4a6a4262a6623 | |
| parent | 17b2e29d7058aaa466b6562c919c8ad4e235576e (diff) | |
| download | gcc-f34fa464bb843234b1ca23c752ce8cb2207b9dff.zip gcc-f34fa464bb843234b1ca23c752ce8cb2207b9dff.tar.gz gcc-f34fa464bb843234b1ca23c752ce8cb2207b9dff.tar.bz2 | |
re PR tree-optimization/17474 (Compiling at -01 yields different results)
PR tree-optimization/17474
* tree-ssa-ccp.c (maybe_fold_offset_to_component_ref): Determine
offset of the field correctly when DECL_FIELD_BIT_OFFSET != 0.
From-SVN: r88095
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/tree-ssa-ccp.c | 8 |
2 files changed, 12 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 023b449..63d2098 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,6 +1,12 @@ +2004-09-25 Zdenek Dvorak <rakdver@atrey.karlin.mff.cuni.cz> + + PR tree-optimization/17474 + * tree-ssa-ccp.c (maybe_fold_offset_to_component_ref): Determine + offset of the field correctly when DECL_FIELD_BIT_OFFSET != 0. + 2004-09-25 Jan Hubicka <jh@suse.cz> - * predict.c (counts_to_freqs): Make glolbal. + * predict.c (counts_to_freqs): Make global. * predict.h (counts_to_freqa): Declare. * profile.c (compute_branch_probabilities): Compute frequencies * tree-profile.c (do_tree_profiling): Refine conditional on when diff --git a/gcc/tree-ssa-ccp.c b/gcc/tree-ssa-ccp.c index bb37fcf..144a8bf 100644 --- a/gcc/tree-ssa-ccp.c +++ b/gcc/tree-ssa-ccp.c @@ -1395,7 +1395,7 @@ static tree maybe_fold_offset_to_component_ref (tree record_type, tree base, tree offset, tree orig_type, bool base_is_ptr) { - tree f, t, field_type, tail_array_field; + tree f, t, field_type, tail_array_field, field_offset; if (TREE_CODE (record_type) != RECORD_TYPE && TREE_CODE (record_type) != UNION_TYPE @@ -1415,7 +1415,9 @@ maybe_fold_offset_to_component_ref (tree record_type, tree base, tree offset, continue; if (DECL_BIT_FIELD (f)) continue; - if (TREE_CODE (DECL_FIELD_OFFSET (f)) != INTEGER_CST) + + field_offset = byte_position (f); + if (TREE_CODE (field_offset) != INTEGER_CST) continue; /* ??? Java creates "interesting" fields for representing base classes. @@ -1428,7 +1430,7 @@ maybe_fold_offset_to_component_ref (tree record_type, tree base, tree offset, tail_array_field = NULL_TREE; /* Check to see if this offset overlaps with the field. */ - cmp = tree_int_cst_compare (DECL_FIELD_OFFSET (f), offset); + cmp = tree_int_cst_compare (field_offset, offset); if (cmp > 0) continue; |