From: Richard Biener <rguenther@suse.de>
Date: Thu, 30 Jan 2025 10:42:51 +0000 (+0100)
Subject: Remove --param vect-force-slp
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=1ae9e3c88ea2fdcb28f4bb58645efb52d8b33c7a;p=thirdparty%2Fgcc.git

Remove --param vect-force-slp

The following removes the ability to switch back to non SLP-only
operation of the vectorizer - a requirement to start cleaning out
non-SLP paths without risk of regressing that case.

	* params.opt (--param=vect-force-slp): Remove.
	* doc/invoke.texi (--param=vect-force-slp): Likewise.
	* tree-vect-loop.cc (vect_analyze_loop_2): Assume
	param_vect_force_slp is 1.
	* tree-vect-stmts.cc (vect_analyze_stmt): Likewise.
---

diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index a0f60e736e1..5b1861815de 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -17225,9 +17225,6 @@ this parameter.  The default value of this parameter is 50.
 @item vect-induction-float
 Enable loop vectorization of floating point inductions.
 
-@item vect-force-slp
-Force the use of SLP when vectorizing, fail if not possible.
-
 @item vrp-block-limit
 Maximum number of basic blocks before VRP switches to a lower memory algorithm.
 
diff --git a/gcc/params.opt b/gcc/params.opt
index ef19051286b..1f0abeccc4b 100644
--- a/gcc/params.opt
+++ b/gcc/params.opt
@@ -1253,10 +1253,6 @@ The maximum factor which the loop vectorizer applies to the cost of statements i
 Common Joined UInteger Var(param_vect_induction_float) Init(1) IntegerRange(0, 1) Param Optimization
 Enable loop vectorization of floating point inductions.
 
--param=vect-force-slp=
-Common Joined UInteger Var(param_vect_force_slp) Init(1) IntegerRange(0, 1) Param Optimization
-Force the use of SLP when vectorizing, fail if not possible.
-
 -param=vrp-block-limit=
 Common Joined UInteger Var(param_vrp_block_limit) Init(150000) Optimization Param
 Maximum number of basic blocks before VRP switches to a fast model with less memory requirements.
diff --git a/gcc/tree-vect-loop.cc b/gcc/tree-vect-loop.cc
index 1c9e9b040d0..5ec164bd602 100644
--- a/gcc/tree-vect-loop.cc
+++ b/gcc/tree-vect-loop.cc
@@ -2934,7 +2934,7 @@ start_over:
 
   /* When we arrive here with SLP disabled and we are supposed
      to use SLP for everything fail vectorization.  */
-  if (!slp && param_vect_force_slp)
+  if (!slp)
     return opt_result::failure_at (vect_location,
 				   "may need non-SLP handling\n");
 
diff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc
index 5af1973734e..61456b1f3b7 100644
--- a/gcc/tree-vect-stmts.cc
+++ b/gcc/tree-vect-stmts.cc
@@ -14022,7 +14022,7 @@ vect_analyze_stmt (vec_info *vinfo,
 
   /* When we arrive here with a non-SLP statement and we are supposed
      to use SLP for everything fail vectorization.  */
-  if (!node && param_vect_force_slp)
+  if (!node)
     return opt_result::failure_at (stmt_info->stmt,
 				   "needs non-SLP handling\n");