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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/fold-const.c | |
| 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/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index be6241f..ba9b013 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -8259,12 +8259,13 @@ fold_unary_loc (location_t loc, enum tree_code code, tree type, tree op0) case REDUC_MAX_EXPR: case REDUC_PLUS_EXPR: { - unsigned int nelts = TYPE_VECTOR_SUBPARTS (type), i; + unsigned int nelts, i; tree *elts; enum tree_code subcode; if (TREE_CODE (op0) != VECTOR_CST) return NULL_TREE; + nelts = TYPE_VECTOR_SUBPARTS (TREE_TYPE (op0)); elts = XALLOCAVEC (tree, nelts); if (!vec_cst_ctor_to_array (op0, elts)) @@ -8283,10 +8284,9 @@ fold_unary_loc (location_t loc, enum tree_code code, tree type, tree op0) elts[0] = const_binop (subcode, elts[0], elts[i]); if (elts[0] == NULL_TREE || !CONSTANT_CLASS_P (elts[0])) return NULL_TREE; - elts[i] = build_zero_cst (TREE_TYPE (type)); } - return build_vector (type, elts); + return elts[0]; } default: |