diff options
Diffstat (limited to 'gcc/tree-vectorizer.c')
| -rw-r--r-- | gcc/tree-vectorizer.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/tree-vectorizer.c b/gcc/tree-vectorizer.c index 8369a6b..89ebe90 100644 --- a/gcc/tree-vectorizer.c +++ b/gcc/tree-vectorizer.c @@ -527,7 +527,12 @@ vect_can_force_dr_alignment_p (tree decl, unsigned int alignment) if (TREE_STATIC (decl)) return (alignment <= MAX_OFILE_ALIGNMENT); else - return (alignment <= STACK_BOUNDARY); + /* This is not 100% correct. The absolute correct stack alignment + is STACK_BOUNDARY. We're supposed to hope, but not assume, that + PREFERRED_STACK_BOUNDARY is honored by all translation units. + However, until someone implements forced stack alignment, SSE + isn't really usable without this. */ + return (alignment <= PREFERRED_STACK_BOUNDARY); } |