diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-02-26 13:34:38 +0000 |
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| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-02-26 13:34:38 +0000 |
| commit | d3791b80669d53ddc926d281fbceef21e474392f (patch) | |
| tree | 34c433c5896a376908b666c2976d2a1df592a0e3 /gcc/tree-vect-stmts.c | |
| parent | 4066b65158314dd0bb5b47d5c87ee06612a69383 (diff) | |
| download | gcc-d3791b80669d53ddc926d281fbceef21e474392f.tar.gz | |
2010-02-26 Richard Guenther <rguenther@suse.de>
PR tree-optimization/43188
* tree-vect-stmts.c (get_vectype_for_scalar_type): Do not build
vector types of over-aligned element type.
* gcc.c-torture/compile/pr43188.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@157088 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-vect-stmts.c')
| -rw-r--r-- | gcc/tree-vect-stmts.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/tree-vect-stmts.c b/gcc/tree-vect-stmts.c index 99230909d7d..ce604b3dea6 100644 --- a/gcc/tree-vect-stmts.c +++ b/gcc/tree-vect-stmts.c @@ -4405,13 +4405,18 @@ tree get_vectype_for_scalar_type (tree scalar_type) { enum machine_mode inner_mode = TYPE_MODE (scalar_type); - int nbytes = GET_MODE_SIZE (inner_mode); + unsigned int nbytes = GET_MODE_SIZE (inner_mode); int nunits; tree vectype; if (nbytes == 0 || nbytes >= UNITS_PER_SIMD_WORD (inner_mode)) return NULL_TREE; + /* We can't build a vector type of elements with alignment bigger than + their size. */ + if (nbytes < TYPE_ALIGN_UNIT (scalar_type)) + return NULL_TREE; + /* FORNOW: Only a single vector size per mode (UNITS_PER_SIMD_WORD) is expected. */ nunits = UNITS_PER_SIMD_WORD (inner_mode) / nbytes; |