diff options
| author | Richard Biener <rguenther@suse.de> | 2023-05-23 15:12:33 +0200 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2023-05-23 17:57:33 +0200 |
| commit | f504b70eb0fc1339322960041a85606df4547897 (patch) | |
| tree | 08ac86c433b797bd68048835d4b1b56f8c34ea84 /gcc | |
| parent | 9d5034aad9868bed45472ef5bfac22dd9ac0e0cb (diff) | |
| download | gcc-f504b70eb0fc1339322960041a85606df4547897.zip gcc-f504b70eb0fc1339322960041a85606df4547897.tar.gz gcc-f504b70eb0fc1339322960041a85606df4547897.tar.bz2 | |
Account for vector splat GPR->XMM move cost
The following also accounts for a GPR->XMM move cost for splat
operations and properly guards eliding the cost when moving from
memory only for SSE4.1 or HImode or larger operands. This
doesn't fix the PR fully yet.
PR target/109944
* config/i386/i386.cc (ix86_vector_costs::add_stmt_cost):
For vector construction or splats apply GPR->XMM move
costing. QImode memory can be handled directly only
with SSE4.1 pinsrb.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/i386/i386.cc | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/gcc/config/i386/i386.cc b/gcc/config/i386/i386.cc index 2710c6d..271fbd4 100644 --- a/gcc/config/i386/i386.cc +++ b/gcc/config/i386/i386.cc @@ -23690,7 +23690,7 @@ ix86_vector_costs::add_stmt_cost (int count, vect_cost_for_stmt kind, stmt_cost = ix86_builtin_vectorization_cost (kind, vectype, misalign); stmt_cost *= (TYPE_VECTOR_SUBPARTS (vectype) + 1); } - else if (kind == vec_construct + else if ((kind == vec_construct || kind == scalar_to_vec) && node && SLP_TREE_DEF_TYPE (node) == vect_external_def && INTEGRAL_TYPE_P (TREE_TYPE (vectype))) @@ -23723,7 +23723,9 @@ ix86_vector_costs::add_stmt_cost (int count, vect_cost_for_stmt kind, Likewise with a BIT_FIELD_REF extracting from a vector register we can hope to avoid using a GPR. */ if (!is_gimple_assign (def) - || (!gimple_assign_load_p (def) + || ((!gimple_assign_load_p (def) + || (!TARGET_SSE4_1 + && GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (op))) == 1)) && (gimple_assign_rhs_code (def) != BIT_FIELD_REF || !VECTOR_TYPE_P (TREE_TYPE (TREE_OPERAND (gimple_assign_rhs1 (def), 0)))))) |