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| author | Alan Lawrence <alan.lawrence@arm.com> | 2014-10-27 14:04:43 +0000 |
|---|---|---|
| committer | Alan Lawrence <alalaw01@gcc.gnu.org> | 2014-10-27 14:04:43 +0000 |
| commit | 99f76d9bacfcef28546dda5a51cb3651ba422518 (patch) | |
| tree | b3fd50b4cacca8673a98acd16f6b70f7f379c0ac /gcc/tree.def | |
| parent | 60393bbc613a987e068945e55ab4e5e9dad29742 (diff) | |
| download | gcc-99f76d9bacfcef28546dda5a51cb3651ba422518.zip gcc-99f76d9bacfcef28546dda5a51cb3651ba422518.tar.gz gcc-99f76d9bacfcef28546dda5a51cb3651ba422518.tar.bz2 | |
[Vectorizer] Make REDUC_xxx_EXPR tree codes produce a scalar result
PR tree-optimization/61114
* expr.c (expand_expr_real_2): For REDUC_{MIN,MAX,PLUS}_EXPR, add
extract_bit_field around optab result.
* fold-const.c (fold_unary_loc): For REDUC_{MIN,MAX,PLUS}_EXPR, produce
scalar not vector.
* tree-cfg.c (verify_gimple_assign_unary): Check result vs operand type
for REDUC_{MIN,MAX,PLUS}_EXPR.
* tree-vect-loop.c (vect_analyze_loop): Update comment.
(vect_create_epilog_for_reduction): For direct vector reduction, use
result of tree code directly without extract_bit_field.
* tree.def (REDUC_MAX_EXPR, REDUC_MIN_EXPR, REDUC_PLUS_EXPR): Update
comment.
From-SVN: r216736
Diffstat (limited to 'gcc/tree.def')
| -rw-r--r-- | gcc/tree.def | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/gcc/tree.def b/gcc/tree.def index bd39e4b..c830e4b 100644 --- a/gcc/tree.def +++ b/gcc/tree.def @@ -1161,10 +1161,9 @@ DEFTREECODE (TRANSACTION_EXPR, "transaction_expr", tcc_expression, 1) result (e.g. summing the elements of the vector, finding the minimum over the vector elements, etc). Operand 0 is a vector. - The expression returns a vector of the same type, with the first - element in the vector holding the result of the reduction of all elements - of the operand. The content of the other elements in the returned vector - is undefined. */ + The expression returns a scalar, with type the same as the elements of the + vector, holding the result of the reduction of all elements of the operand. + */ DEFTREECODE (REDUC_MAX_EXPR, "reduc_max_expr", tcc_unary, 1) DEFTREECODE (REDUC_MIN_EXPR, "reduc_min_expr", tcc_unary, 1) DEFTREECODE (REDUC_PLUS_EXPR, "reduc_plus_expr", tcc_unary, 1) |