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Add support to BBVectorize for vectorizing selects.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154700 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -43,6 +43,9 @@ struct VectorizeConfig {
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/// @brief Vectorize the fused-multiply-add intrinsic.
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bool VectorizeFMA;
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/// @brief Vectorize select instructions.
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bool VectorizeSelect;
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/// @brief Vectorize loads and stores.
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bool VectorizeMemOps;
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@ -95,6 +95,10 @@ static cl::opt<bool>
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NoFMA("bb-vectorize-no-fma", cl::init(false), cl::Hidden,
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cl::desc("Don't try to vectorize the fused-multiply-add intrinsic"));
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static cl::opt<bool>
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NoSelect("bb-vectorize-no-select", cl::init(false), cl::Hidden,
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cl::desc("Don't try to vectorize select instructions"));
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static cl::opt<bool>
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NoMemOps("bb-vectorize-no-mem-ops", cl::init(false), cl::Hidden,
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cl::desc("Don't try to vectorize loads and stores"));
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@ -552,6 +556,9 @@ namespace {
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Type *DestTy = C->getDestTy();
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if (!DestTy->isSingleValueType() || DestTy->isPointerTy())
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return false;
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} else if (isa<SelectInst>(I)) {
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if (!Config.VectorizeSelect)
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return false;
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} else if (!(I->isBinaryOp() || isa<ShuffleVectorInst>(I) ||
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isa<ExtractElementInst>(I) || isa<InsertElementInst>(I))) {
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return false;
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@ -1894,6 +1901,7 @@ VectorizeConfig::VectorizeConfig() {
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VectorizeCasts = !::NoCasts;
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VectorizeMath = !::NoMath;
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VectorizeFMA = !::NoFMA;
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VectorizeSelect = !::NoSelect;
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VectorizeMemOps = !::NoMemOps;
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AlignedOnly = ::AlignedOnly;
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ReqChainDepth= ::ReqChainDepth;
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30
test/Transforms/BBVectorize/simple-sel.ll
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30
test/Transforms/BBVectorize/simple-sel.ll
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@ -0,0 +1,30 @@
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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"
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; RUN: opt < %s -bb-vectorize -bb-vectorize-req-chain-depth=3 -instcombine -gvn -S | FileCheck %s
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; Basic depth-3 chain with select
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define double @test1(double %A1, double %A2, double %B1, double %B2, i1 %C1, i1 %C2) {
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; CHECK: @test1
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; CHECK: %X1.v.i1.1 = insertelement <2 x double> undef, double %B1, i32 0
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; CHECK: %X1.v.i0.1 = insertelement <2 x double> undef, double %A1, i32 0
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; CHECK: %X1.v.i1.2 = insertelement <2 x double> %X1.v.i1.1, double %B2, i32 1
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; CHECK: %X1.v.i0.2 = insertelement <2 x double> %X1.v.i0.1, double %A2, i32 1
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%X1 = fsub double %A1, %B1
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%X2 = fsub double %A2, %B2
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; CHECK: %X1 = fsub <2 x double> %X1.v.i0.2, %X1.v.i1.2
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%Y1 = fmul double %X1, %A1
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%Y2 = fmul double %X2, %A2
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; CHECK: %Y1 = fmul <2 x double> %X1, %X1.v.i0.2
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%Z1 = select i1 %C1, double %Y1, double %B1
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%Z2 = select i1 %C2, double %Y2, double %B2
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; CHECK: %Z1.v.i0.1 = insertelement <2 x i1> undef, i1 %C1, i32 0
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; CHECK: %Z1.v.i0.2 = insertelement <2 x i1> %Z1.v.i0.1, i1 %C2, i32 1
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; CHECK: %Z1 = select <2 x i1> %Z1.v.i0.2, <2 x double> %Y1, <2 x double> %X1.v.i1.2
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%R = fmul double %Z1, %Z2
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; CHECK: %Z1.v.r1 = extractelement <2 x double> %Z1, i32 0
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; CHECK: %Z1.v.r2 = extractelement <2 x double> %Z1, i32 1
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; CHECK: %R = fmul double %Z1.v.r1, %Z1.v.r2
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ret double %R
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; CHECK: ret double %R
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}
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