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* [gcc r13-3268] vect: Don't pattern match BITFIELD_REF's of non-integrals [PR107226]
@ 2022-10-13 9:35 Andre Simoes Dias Vieira
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From: Andre Simoes Dias Vieira @ 2022-10-13 9:35 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:7f9a7465c863e482708d2a00f5f7ff91ae3a7e0b
commit r13-3268-g7f9a7465c863e482708d2a00f5f7ff91ae3a7e0b
Author: Andre Vieira <andre.simoesdiasvieira@arm.com>
Date: Thu Oct 13 10:34:27 2022 +0100
vect: Don't pattern match BITFIELD_REF's of non-integrals [PR107226]
The original patch supported matching the vect_recog_bitfield_ref_pattern for
BITFIELD_REF's where the first operand didn't have a INTEGRAL_TYPE_P type.
That means it would also match vectors, leading to regressions in targets that
supported vectorization of those.
gcc/ChangeLog:
PR tree-optimization/107226
* tree-vect-patterns.cc (vect_recog_bitfield_ref_pattern): Reject
BITFIELD_REF's with non integral typed first operands.
Diff:
---
gcc/tree-vect-patterns.cc | 21 ++-------------------
1 file changed, 2 insertions(+), 19 deletions(-)
diff --git a/gcc/tree-vect-patterns.cc b/gcc/tree-vect-patterns.cc
index 0cc315d3126..6afd57a50c4 100644
--- a/gcc/tree-vect-patterns.cc
+++ b/gcc/tree-vect-patterns.cc
@@ -1913,6 +1913,7 @@ vect_recog_bitfield_ref_pattern (vec_info *vinfo, stmt_vec_info stmt_info,
return NULL;
if (!INTEGRAL_TYPE_P (TREE_TYPE (bf_ref))
+ || !INTEGRAL_TYPE_P (TREE_TYPE (container))
|| TYPE_MODE (TREE_TYPE (container)) == E_BLKmode)
return NULL;
@@ -1921,25 +1922,7 @@ vect_recog_bitfield_ref_pattern (vec_info *vinfo, stmt_vec_info stmt_info,
tree ret = gimple_assign_lhs (first_stmt);
tree ret_type = TREE_TYPE (ret);
bool shift_first = true;
- tree vectype;
-
- /* If the first operand of the BIT_FIELD_REF is not an INTEGER type, convert
- it to one of the same width so we can perform the necessary masking and
- shifting. */
- if (!INTEGRAL_TYPE_P (TREE_TYPE (container)))
- {
- unsigned HOST_WIDE_INT container_size =
- tree_to_uhwi (TYPE_SIZE (TREE_TYPE (container)));
- tree int_type = build_nonstandard_integer_type (container_size, true);
- pattern_stmt
- = gimple_build_assign (vect_recog_temp_ssa_var (int_type),
- VIEW_CONVERT_EXPR, container);
- vectype = get_vectype_for_scalar_type (vinfo, int_type);
- container = gimple_assign_lhs (pattern_stmt);
- append_pattern_def_seq (vinfo, stmt_info, pattern_stmt, vectype);
- }
- else
- vectype = get_vectype_for_scalar_type (vinfo, TREE_TYPE (container));
+ tree vectype = get_vectype_for_scalar_type (vinfo, TREE_TYPE (container));
/* We move the conversion earlier if the loaded type is smaller than the
return type to enable the use of widening loads. */
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2022-10-13 9:35 [gcc r13-3268] vect: Don't pattern match BITFIELD_REF's of non-integrals [PR107226] Andre Simoes Dias Vieira
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