On 6/13/23 09:55, Andrew Stubbs wrote:
Subject:
[PATCH] vect: Vectorize via libfuncs
From:
Andrew Stubbs <a...@codesourcery.com>
Date:
6/13/23, 09:55
To:
"gcc-patches@gcc.gnu.org" <gcc-patches@gcc.gnu.org>
This patch allows vectorization when operators are available as
libfuncs, rather that only as insns.
This will be useful for amdgcn where we plan to vectorize loops that
contain integer division or modulus, but don't want to generate inline
instructions for the division algorithm every time.
The change should have not affect architectures that do not define
vector-mode libfuncs.
OK for mainline?
Andrew
230613-vect-allow-libfuncs.patch
vect: vectorize via libfuncs
This patch allows vectorization when the libfuncs are defined.
gcc/ChangeLog:
* tree-vect-generic.cc: Include optabs-libfuncs.h.
(get_compute_type): Check optab_libfunc.
* tree-vect-stmts.cc: Include optabs-libfuncs.h.
(vectorizable_operation): Check optab_libfunc.
diff --git a/gcc/tree-vect-generic.cc b/gcc/tree-vect-generic.cc
index b7d4a919c55..4d784a70c0d 100644
--- a/gcc/tree-vect-generic.cc
+++ b/gcc/tree-vect-generic.cc
@@ -44,6 +44,7 @@ along with GCC; see the file COPYING3. If not see
#include "gimple-fold.h"
#include "gimple-match.h"
#include "recog.h" /* FIXME: for insn_data */
+#include "optabs-libfuncs.h"
/* Build a ternary operation and gimplify it. Emit code before GSI.
@@ -1714,7 +1715,8 @@ get_compute_type (enum tree_code code, optab op, tree
type)
machine_mode compute_mode = TYPE_MODE (compute_type);
if (VECTOR_MODE_P (compute_mode))
{
- if (op && optab_handler (op, compute_mode) != CODE_FOR_nothing)
+ if (op && (optab_handler (op, compute_mode) != CODE_FOR_nothing
+ || optab_libfunc (op, compute_mode)))
Formatting nit. Bring the && down and align it under OP. That'll
require re-indenting the optab_libfunc call as well.
OK with that nit.
jeff
