[PATCH] D56714: [SLP] introduce control over arithmetic horizontal reduction
Fedor Sergeev via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Tue Jan 15 03:31:45 PST 2019
fedor.sergeev updated this revision to Diff 181767.
fedor.sergeev added a comment.
Herald added a subscriber: zzheng.
adding control to a couple tests that expect hor to happen
Repository:
rL LLVM
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D56714/new/
https://reviews.llvm.org/D56714
Files:
lib/Transforms/Vectorize/SLPVectorizer.cpp
test/Transforms/SLPVectorizer/X86/PR39774.ll
test/Transforms/SLPVectorizer/X86/reduction_unrolled.ll
Index: test/Transforms/SLPVectorizer/X86/reduction_unrolled.ll
===================================================================
--- test/Transforms/SLPVectorizer/X86/reduction_unrolled.ll
+++ test/Transforms/SLPVectorizer/X86/reduction_unrolled.ll
@@ -1,6 +1,6 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt -slp-vectorizer -slp-vectorize-hor -S -mtriple=x86_64-unknown-linux-gnu -mcpu=bdver2 -debug < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,AVX
-; RUN: opt -slp-vectorizer -slp-vectorize-hor -S -mtriple=x86_64-unknown-linux-gnu -mcpu=core2 -debug < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,SSE
+; RUN: opt -slp-vectorizer -slp-vectorize-hor -slp-vectorize-hor-arith=true -S -mtriple=x86_64-unknown-linux-gnu -mcpu=bdver2 -debug < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,AVX
+; RUN: opt -slp-vectorizer -slp-vectorize-hor -slp-vectorize-hor-arith=true -S -mtriple=x86_64-unknown-linux-gnu -mcpu=core2 -debug < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,SSE
; REQUIRES: asserts
; int test_add(unsigned int *p) {
Index: test/Transforms/SLPVectorizer/X86/PR39774.ll
===================================================================
--- test/Transforms/SLPVectorizer/X86/PR39774.ll
+++ test/Transforms/SLPVectorizer/X86/PR39774.ll
@@ -1,6 +1,6 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt -slp-vectorizer -S < %s -mtriple=x86_64-unknown-linux-gnu -mcpu=skylake -slp-threshold=-7 | FileCheck %s --check-prefixes=ALL,CHECK
-; RUN: opt -slp-vectorizer -S < %s -mtriple=x86_64-unknown-linux-gnu -mcpu=skylake -slp-threshold=-8 -slp-min-tree-size=6 | FileCheck %s --check-prefixes=ALL,FORCE_REDUCTION
+; RUN: opt -slp-vectorizer -slp-vectorize-hor -slp-vectorize-hor-arith=true -S < %s -mtriple=x86_64-unknown-linux-gnu -mcpu=skylake -slp-threshold=-7 | FileCheck %s --check-prefixes=ALL,CHECK
+; RUN: opt -slp-vectorizer -slp-vectorize-hor -slp-vectorize-hor-arith=true -S < %s -mtriple=x86_64-unknown-linux-gnu -mcpu=skylake -slp-threshold=-8 -slp-min-tree-size=6 | FileCheck %s --check-prefixes=ALL,FORCE_REDUCTION
define void @Test(i32) {
; ALL-LABEL: @Test(
Index: lib/Transforms/Vectorize/SLPVectorizer.cpp
===================================================================
--- lib/Transforms/Vectorize/SLPVectorizer.cpp
+++ lib/Transforms/Vectorize/SLPVectorizer.cpp
@@ -115,6 +115,11 @@
ShouldVectorizeHor("slp-vectorize-hor", cl::init(true), cl::Hidden,
cl::desc("Attempt to vectorize horizontal reductions"));
+static cl::opt<bool> ShouldVectorizeHorArith(
+ "slp-vectorize-hor-arith", cl::init(false), cl::Hidden,
+ cl::desc("Attempt to vectorize horizontal reductions for arithmetic "
+ "operations other than add/fadd."));
+
static cl::opt<bool> ShouldStartVectorizeHorAtStore(
"slp-vectorize-hor-store", cl::init(false), cl::Hidden,
cl::desc(
@@ -5131,9 +5136,10 @@
// We currently only support add/mul/logical && min/max reductions.
((Kind == RK_Arithmetic &&
(Opcode == Instruction::Add || Opcode == Instruction::FAdd ||
- Opcode == Instruction::Mul || Opcode == Instruction::FMul ||
- Opcode == Instruction::And || Opcode == Instruction::Or ||
- Opcode == Instruction::Xor)) ||
+ (ShouldVectorizeHorArith &&
+ (Opcode == Instruction::Mul || Opcode == Instruction::FMul ||
+ Opcode == Instruction::And || Opcode == Instruction::Or ||
+ Opcode == Instruction::Xor)))) ||
((Opcode == Instruction::ICmp || Opcode == Instruction::FCmp) &&
(Kind == RK_Min || Kind == RK_Max)) ||
(Opcode == Instruction::ICmp &&
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