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| author | Dorit Nuzman <dorit@il.ibm.com> | 2007-07-12 14:42:08 +0000 |
|---|---|---|
| committer | Dorit Nuzman <dorit@gcc.gnu.org> | 2007-07-12 14:42:08 +0000 |
| commit | 5b900a4c0ee38a66b04b4ceeecb8b194ddde7e57 (patch) | |
| tree | 1d606e4397ee32cd9fe29b0165fe91119ff4fbc6 /gcc/targhooks.c | |
| parent | 2df6377e6e01046582d489ae59b5be1371b42d59 (diff) | |
| download | gcc-5b900a4c0ee38a66b04b4ceeecb8b194ddde7e57.zip gcc-5b900a4c0ee38a66b04b4ceeecb8b194ddde7e57.tar.gz gcc-5b900a4c0ee38a66b04b4ceeecb8b194ddde7e57.tar.bz2 | |
re PR target/25413 (wrong alignment or incorrect address computation in vectorized code on Pentium 4 SSE)
2007-07-12 Dorit Nuzman <dorit@il.ibm.com>
Devang Patel <dpatel@apple.com>
PR tree-optimization/25413
* targhooks.c (default_builtin_vector_alignment_reachable): New.
* targhooks.h (default_builtin_vector_alignment_reachable): New.
* tree.h (contains_packed_reference): New.
* expr.c (contains_packed_reference): New.
* tree-vect-analyze.c (vector_alignment_reachable_p): New.
(vect_enhance_data_refs_alignment): Call
vector_alignment_reachable_p.
* target.h (vector_alignment_reachable): New builtin.
* target-def.h (TARGET_VECTOR_ALIGNMENT_REACHABLE): New.
* config/rs6000/rs6000.c (rs6000_vector_alignment_reachable): New.
(TARGET_VECTOR_ALIGNMENT_REACHABLE): Define.
Co-Authored-By: Devang Patel <dpatel@apple.com>
From-SVN: r126591
Diffstat (limited to 'gcc/targhooks.c')
| -rw-r--r-- | gcc/targhooks.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/targhooks.c b/gcc/targhooks.c index b063e72..f875b87 100644 --- a/gcc/targhooks.c +++ b/gcc/targhooks.c @@ -653,4 +653,20 @@ tree default_mangle_decl_assembler_name (tree decl ATTRIBUTE_UNUSED, return id; } +bool +default_builtin_vector_alignment_reachable (tree type, bool is_packed) +{ + if (is_packed) + return false; + + /* Assuming that types whose size is > pointer-size are not guaranteed to be + naturally aligned. */ + if (tree_int_cst_compare (TYPE_SIZE (type), bitsize_int (POINTER_SIZE)) > 0) + return false; + + /* Assuming that types whose size is <= pointer-size + are naturally aligned. */ + return true; +} + #include "gt-targhooks.h" |