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Add support to BBVectorize for vectorizing selects.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154700 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hal Finkel 2012-04-13 20:45:45 +00:00
parent 8800cada20
commit fc3665c875
3 changed files with 41 additions and 0 deletions
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3
include/llvm/Transforms/Vectorize.h
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@ -43,6 +43,9 @@ struct VectorizeConfig {
/// @brief Vectorize the fused-multiply-add intrinsic.
bool VectorizeFMA;
/// @brief Vectorize select instructions.
bool VectorizeSelect;
/// @brief Vectorize loads and stores.
bool VectorizeMemOps;

8
lib/Transforms/Vectorize/BBVectorize.cpp
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@ -95,6 +95,10 @@ static cl::opt<bool>
NoFMA("bb-vectorize-no-fma", cl::init(false), cl::Hidden,
cl::desc("Don't try to vectorize the fused-multiply-add intrinsic"));
static cl::opt<bool>
NoSelect("bb-vectorize-no-select", cl::init(false), cl::Hidden,
cl::desc("Don't try to vectorize select instructions"));
static cl::opt<bool>
NoMemOps("bb-vectorize-no-mem-ops", cl::init(false), cl::Hidden,
cl::desc("Don't try to vectorize loads and stores"));
@ -552,6 +556,9 @@ namespace {
Type *DestTy = C->getDestTy();
if (!DestTy->isSingleValueType() || DestTy->isPointerTy())
return false;
} else if (isa<SelectInst>(I)) {
if (!Config.VectorizeSelect)
return false;
} else if (!(I->isBinaryOp() || isa<ShuffleVectorInst>(I) ||
isa<ExtractElementInst>(I) || isa<InsertElementInst>(I))) {
return false;
@ -1894,6 +1901,7 @@ VectorizeConfig::VectorizeConfig() {
VectorizeCasts = !::NoCasts;
VectorizeMath = !::NoMath;
VectorizeFMA = !::NoFMA;
VectorizeSelect = !::NoSelect;
VectorizeMemOps = !::NoMemOps;
AlignedOnly = ::AlignedOnly;
ReqChainDepth= ::ReqChainDepth;

30
test/Transforms/BBVectorize/simple-sel.ll Normal file
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@ -0,0 +1,30 @@
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
; RUN: opt < %s -bb-vectorize -bb-vectorize-req-chain-depth=3 -instcombine -gvn -S | FileCheck %s
; Basic depth-3 chain with select
define double @test1(double %A1, double %A2, double %B1, double %B2, i1 %C1, i1 %C2) {
; CHECK: @test1
; CHECK: %X1.v.i1.1 = insertelement <2 x double> undef, double %B1, i32 0
; CHECK: %X1.v.i0.1 = insertelement <2 x double> undef, double %A1, i32 0
; CHECK: %X1.v.i1.2 = insertelement <2 x double> %X1.v.i1.1, double %B2, i32 1
; CHECK: %X1.v.i0.2 = insertelement <2 x double> %X1.v.i0.1, double %A2, i32 1
%X1 = fsub double %A1, %B1
%X2 = fsub double %A2, %B2
; CHECK: %X1 = fsub <2 x double> %X1.v.i0.2, %X1.v.i1.2
%Y1 = fmul double %X1, %A1
%Y2 = fmul double %X2, %A2
; CHECK: %Y1 = fmul <2 x double> %X1, %X1.v.i0.2
%Z1 = select i1 %C1, double %Y1, double %B1
%Z2 = select i1 %C2, double %Y2, double %B2
; CHECK: %Z1.v.i0.1 = insertelement <2 x i1> undef, i1 %C1, i32 0
; CHECK: %Z1.v.i0.2 = insertelement <2 x i1> %Z1.v.i0.1, i1 %C2, i32 1
; CHECK: %Z1 = select <2 x i1> %Z1.v.i0.2, <2 x double> %Y1, <2 x double> %X1.v.i1.2
%R = fmul double %Z1, %Z2
; CHECK: %Z1.v.r1 = extractelement <2 x double> %Z1, i32 0
; CHECK: %Z1.v.r2 = extractelement <2 x double> %Z1, i32 1
; CHECK: %R = fmul double %Z1.v.r1, %Z1.v.r2
ret double %R
; CHECK: ret double %R
}