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[PATCH] Fix PR86557
- From: Richard Biener <rguenther at suse dot de>
- To: gcc-patches at gcc dot gnu dot org
- Date: Wed, 18 Jul 2018 14:53:47 +0200 (CEST)
- Subject: [PATCH] Fix PR86557
The following fixes the vectorizer part of PR86557, vectorizing
of EXACT_DIV_EXPR. The x86 backend still lacks arithmetic DImode
right shift support for vectors without AVX512.
Bootstrapped and tested on x86_64-unknown-linux-gnu, applied.
Richard.
2018-07-18 Richard Biener <rguenther@suse.de>
PR tree-optimization/86557
* tree-vect-patterns.c (vect_recog_divmod_pattern): Also handle
EXACT_DIV_EXPR.
diff --git a/gcc/tree-vect-patterns.c b/gcc/tree-vect-patterns.c
index 4c22afd2b5f..0f63ccf87bb 100644
--- a/gcc/tree-vect-patterns.c
+++ b/gcc/tree-vect-patterns.c
@@ -2684,6 +2684,7 @@ vect_recog_divmod_pattern (stmt_vec_info stmt_vinfo, tree *type_out)
switch (rhs_code)
{
case TRUNC_DIV_EXPR:
+ case EXACT_DIV_EXPR:
case TRUNC_MOD_EXPR:
break;
default:
@@ -2730,7 +2731,8 @@ vect_recog_divmod_pattern (stmt_vec_info stmt_vinfo, tree *type_out)
cond = build2 (LT_EXPR, boolean_type_node, oprnd0,
build_int_cst (itype, 0));
- if (rhs_code == TRUNC_DIV_EXPR)
+ if (rhs_code == TRUNC_DIV_EXPR
+ || rhs_code == EXACT_DIV_EXPR)
{
tree var = vect_recog_temp_ssa_var (itype, NULL);
tree shift;