From 443c999c967d555f6942834b0924c60226b3e6f2 Mon Sep 17 00:00:00 2001
From: Hal Finkel <hfinkel@anl.gov>
Date: Tue, 11 Dec 2012 19:59:32 +0000
Subject: [PATCH] Add -fslp-vectorize to enable bb-vectorize
Add -fslp-vectorize (with -ftree-slp-vectorize as an alias for gcc compatibility)
to provide a way to enable the basic-block vectorization pass. This uses the same
acronym as gcc, superword-level parallelism (SLP), also common in the literature,
to refer to basic-block vectorization.
Nadav suggested this as a follow-up to the adding of -fvectorize.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169909 91177308-0d34-0410-b5e6-96231b3b80d8
---
include/clang/Driver/Options.td | 5 +++++
lib/Driver/Tools.cpp | 7 +++++++
test/Driver/clang_f_opts.c | 13 +++++++++++++
3 files changed, 25 insertions(+)
diff --git a/include/clang/Driver/Options.td b/include/clang/Driver/Options.td
index c3edfe31985..759864369cd 100644
--- a/include/clang/Driver/Options.td
+++ b/include/clang/Driver/Options.td
@@ -655,6 +655,11 @@ def fvectorize : Flag<["-"], "fvectorize">, Group<f_Group>,
def fno_vectorize : Flag<["-"], "fno-vectorize">, Group<f_Group>;
def ftree_vectorize : Flag<["-"], "ftree-vectorize">, Alias<fvectorize>;
def fno_tree_vectorize : Flag<["-"], "fno-tree-vectorize">, Alias<fno_vectorize>;
+def fslp_vectorize : Flag<["-"], "fslp-vectorize">, Group<f_Group>,
+ HelpText<"Enable the superword-level parallelism vectorization passes">;
+def fno_slp_vectorize : Flag<["-"], "fno-slp-vectorize">, Group<f_Group>;
+def ftree_slp_vectorize : Flag<["-"], "ftree-slp-vectorize">, Alias<fslp_vectorize>;
+def fno_tree_slp_vectorize : Flag<["-"], "fno-tree-slp-vectorize">, Alias<fno_slp_vectorize>;
def Wlarge_by_value_copy_def : Flag<["-"], "Wlarge-by-value-copy">,
HelpText<"Warn if a function definition returns or accepts an object larger "
"in bytes than a given value">, Flags<[HelpHidden]>;
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index 9ae03fc8c6b..25aab58660c 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -2935,6 +2935,13 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
CmdArgs.push_back("-vectorize-loops");
}
+ // -fno-slp-vectorize is default.
+ if (Args.hasFlag(options::OPT_fslp_vectorize,
+ options::OPT_fno_slp_vectorize, false)) {
+ CmdArgs.push_back("-backend-option");
+ CmdArgs.push_back("-vectorize");
+ }
+
if (Arg *A = Args.getLastArg(options::OPT_fshow_overloads_EQ))
A->render(Args, CmdArgs);
diff --git a/test/Driver/clang_f_opts.c b/test/Driver/clang_f_opts.c
index 8ab7c041479..6fc9239ce5e 100644
--- a/test/Driver/clang_f_opts.c
+++ b/test/Driver/clang_f_opts.c
@@ -51,3 +51,16 @@
// CHECK-VECTORIZE: "-vectorize-loops"
// CHECK-NO-VECTORIZE-NOT: "-backend-option"
// CHECK-NO-VECTORIZE-NOT: "-vectorize-loops"
+
+// RUN: %clang -### -S -fslp-vectorize %s 2>&1 | FileCheck -check-prefix=CHECK-SLP-VECTORIZE %s
+// RUN: %clang -### -S -fno-slp-vectorize -fslp-vectorize %s 2>&1 | FileCheck -check-prefix=CHECK-SLP-VECTORIZE %s
+// RUN: %clang -### -S -fno-slp-vectorize %s 2>&1 | FileCheck -check-prefix=CHECK-NO-SLP-VECTORIZE %s
+// RUN: %clang -### -S -fslp-vectorize -fno-slp-vectorize %s 2>&1 | FileCheck -check-prefix=CHECK-NO-SLP-VECTORIZE %s
+// RUN: %clang -### -S -ftree-slp-vectorize %s 2>&1 | FileCheck -check-prefix=CHECK-SLP-VECTORIZE %s
+// RUN: %clang -### -S -ftree-no-slp-vectorize -fslp-vectorize %s 2>&1 | FileCheck -check-prefix=CHECK-SLP-VECTORIZE %s
+// RUN: %clang -### -S -ftree-no-slp-vectorize %s 2>&1 | FileCheck -check-prefix=CHECK-NO-SLP-VECTORIZE %s
+// RUN: %clang -### -S -ftree-slp-vectorize -fno-slp-vectorize %s 2>&1 | FileCheck -check-prefix=CHECK-NO-SLP-VECTORIZE %s
+// CHECK-SLP-VECTORIZE: "-backend-option"
+// CHECK-SLP-VECTORIZE: "-vectorize"
+// CHECK-NO-SLP-VECTORIZE-NOT: "-backend-option"
+// CHECK-NO-SLP-VECTORIZE-NOT: "-vectorize"
--
GitLab