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| author | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-12-21 00:41:24 +0000 |
|---|---|---|
| committer | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-12-21 00:41:24 +0000 |
| commit | 64791788b1009469dbbb8709957c2069c77cf400 (patch) | |
| tree | d40a75700f03d712360993d8d1068d8a7eacbf26 /gcc/tree-vect-generic.c | |
| parent | 5dcb35d925a7dea3c4b25c57a14d9a432fcfe52e (diff) | |
| download | gcc-64791788b1009469dbbb8709957c2069c77cf400.tar.gz | |
Always simplify vector shifts by scalars.
Also decompose vectors in large integer modes.
* tree-vect-generic.c (expand_vector_operations_1): Correct tests
for vector types -- use the type not the mode. Fix optab selection
for vector shifts by a scalar. Handle over-large integer modes
like BLKmode.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@182563 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-vect-generic.c')
| -rw-r--r-- | gcc/tree-vect-generic.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/gcc/tree-vect-generic.c b/gcc/tree-vect-generic.c index dc01ce7b24c..469a46545fc 100644 --- a/gcc/tree-vect-generic.c +++ b/gcc/tree-vect-generic.c @@ -796,10 +796,12 @@ expand_vector_operations_1 (gimple_stmt_iterator *gsi) || code == LROTATE_EXPR || code == RROTATE_EXPR) { + optab opv; + /* Check whether we have vector <op> {x,x,x,x} where x could be a scalar variable or a constant. Transform vector <op> {x,x,x,x} ==> vector <op> scalar. */ - if (VECTOR_MODE_P (TYPE_MODE (TREE_TYPE (rhs2)))) + if (VECTOR_INTEGER_TYPE_P (TREE_TYPE (rhs2))) { tree first; gimple def_stmt; @@ -818,17 +820,18 @@ expand_vector_operations_1 (gimple_stmt_iterator *gsi) } } - if (VECTOR_MODE_P (TYPE_MODE (TREE_TYPE (rhs2)))) - op = optab_for_tree_code (code, type, optab_vector); + opv = optab_for_tree_code (code, type, optab_vector); + if (VECTOR_INTEGER_TYPE_P (TREE_TYPE (rhs2))) + op = opv; else { op = optab_for_tree_code (code, type, optab_scalar); /* The rtl expander will expand vector/scalar as vector/vector if necessary. Don't bother converting the stmt here. */ - if (op == NULL - || optab_handler (op, TYPE_MODE (type)) == CODE_FOR_nothing) - op = optab_for_tree_code (code, type, optab_vector); + if (optab_handler (op, TYPE_MODE (type)) == CODE_FOR_nothing + && optab_handler (opv, TYPE_MODE (type)) != CODE_FOR_nothing) + return; } } else @@ -859,14 +862,16 @@ expand_vector_operations_1 (gimple_stmt_iterator *gsi) /* For very wide vectors, try using a smaller vector mode. */ compute_type = type; - if (TYPE_MODE (type) == BLKmode && op) + if (!VECTOR_MODE_P (TYPE_MODE (type)) && op) { tree vector_compute_type = type_for_widest_vector_mode (TYPE_MODE (TREE_TYPE (type)), op, TYPE_SATURATING (TREE_TYPE (type))); if (vector_compute_type != NULL_TREE && (TYPE_VECTOR_SUBPARTS (vector_compute_type) - < TYPE_VECTOR_SUBPARTS (compute_type))) + < TYPE_VECTOR_SUBPARTS (compute_type)) + && (optab_handler (op, TYPE_MODE (vector_compute_type)) + != CODE_FOR_nothing)) compute_type = vector_compute_type; } |