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llvm-project/llvm/test/Transforms/BBVectorize/simple-ldstr.ll

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Add a basic-block autovectorization pass. This is the initial checkin of the basic-block autovectorization pass along with some supporting vectorization infrastructure. Special thanks to everyone who helped review this code over the last several months (especially Tobias Grosser). llvm-svn: 149468
2012-02-01 11:51:43 +08:00
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-n8:16:32:64-S128"
; RUN: opt < %s -bb-vectorize -bb-vectorize-req-chain-depth=3 -instcombine -gvn -S | FileCheck %s
; RUN: opt < %s -bb-vectorize -bb-vectorize-req-chain-depth=3 -bb-vectorize-aligned-only -instcombine -gvn -S | FileCheck %s -check-prefix=CHECK-AO
; Simple 3-pair chain with loads and stores
define void @test1(double* %a, double* %b, double* %c) nounwind uwtable readonly {
entry:
%i0 = load double* %a, align 8
%i1 = load double* %b, align 8
%mul = fmul double %i0, %i1
%arrayidx3 = getelementptr inbounds double* %a, i64 1
%i3 = load double* %arrayidx3, align 8
%arrayidx4 = getelementptr inbounds double* %b, i64 1
%i4 = load double* %arrayidx4, align 8
%mul5 = fmul double %i3, %i4
store double %mul, double* %c, align 8
%arrayidx5 = getelementptr inbounds double* %c, i64 1
store double %mul5, double* %arrayidx5, align 8
ret void
; CHECK: @test1
; CHECK: %i0.v.i0 = bitcast double* %a to <2 x double>*
; CHECK: %i1.v.i0 = bitcast double* %b to <2 x double>*
; CHECK: %i0 = load <2 x double>* %i0.v.i0, align 8
; CHECK: %i1 = load <2 x double>* %i1.v.i0, align 8
; CHECK: %mul = fmul <2 x double> %i0, %i1
; CHECK: %0 = bitcast double* %c to <2 x double>*
; CHECK: store <2 x double> %mul, <2 x double>* %0, align 8
; CHECK: ret void
; CHECK-AO: @test1
; CHECK-AO-NOT: <2 x double>
}
; Simple chain with extending loads and stores
define void @test2(float* %a, float* %b, double* %c) nounwind uwtable readonly {
entry:
%i0f = load float* %a, align 4
%i0 = fpext float %i0f to double
%i1f = load float* %b, align 4
%i1 = fpext float %i1f to double
%mul = fmul double %i0, %i1
%arrayidx3 = getelementptr inbounds float* %a, i64 1
%i3f = load float* %arrayidx3, align 4
%i3 = fpext float %i3f to double
%arrayidx4 = getelementptr inbounds float* %b, i64 1
%i4f = load float* %arrayidx4, align 4
%i4 = fpext float %i4f to double
%mul5 = fmul double %i3, %i4
store double %mul, double* %c, align 8
%arrayidx5 = getelementptr inbounds double* %c, i64 1
store double %mul5, double* %arrayidx5, align 8
ret void
; CHECK: @test2
; CHECK: %i0f.v.i0 = bitcast float* %a to <2 x float>*
; CHECK: %i1f.v.i0 = bitcast float* %b to <2 x float>*
; CHECK: %i0f = load <2 x float>* %i0f.v.i0, align 4
; CHECK: %i0 = fpext <2 x float> %i0f to <2 x double>
; CHECK: %i1f = load <2 x float>* %i1f.v.i0, align 4
; CHECK: %i1 = fpext <2 x float> %i1f to <2 x double>
; CHECK: %mul = fmul <2 x double> %i0, %i1
; CHECK: %0 = bitcast double* %c to <2 x double>*
; CHECK: store <2 x double> %mul, <2 x double>* %0, align 8
; CHECK: ret void
; CHECK-AO: @test2
; CHECK-AO-NOT: <2 x double>
}
; Simple chain with loads and truncating stores
define void @test3(double* %a, double* %b, float* %c) nounwind uwtable readonly {
entry:
%i0 = load double* %a, align 8
%i1 = load double* %b, align 8
%mul = fmul double %i0, %i1
%mulf = fptrunc double %mul to float
%arrayidx3 = getelementptr inbounds double* %a, i64 1
%i3 = load double* %arrayidx3, align 8
%arrayidx4 = getelementptr inbounds double* %b, i64 1
%i4 = load double* %arrayidx4, align 8
%mul5 = fmul double %i3, %i4
%mul5f = fptrunc double %mul5 to float
store float %mulf, float* %c, align 8
%arrayidx5 = getelementptr inbounds float* %c, i64 1
store float %mul5f, float* %arrayidx5, align 4
ret void
; CHECK: @test3
; CHECK: %i0.v.i0 = bitcast double* %a to <2 x double>*
; CHECK: %i1.v.i0 = bitcast double* %b to <2 x double>*
; CHECK: %i0 = load <2 x double>* %i0.v.i0, align 8
; CHECK: %i1 = load <2 x double>* %i1.v.i0, align 8
; CHECK: %mul = fmul <2 x double> %i0, %i1
; CHECK: %mulf = fptrunc <2 x double> %mul to <2 x float>
; CHECK: %0 = bitcast float* %c to <2 x float>*
; CHECK: store <2 x float> %mulf, <2 x float>* %0, align 8
; CHECK: ret void
; CHECK-AO: @test3
; CHECK-AO: %i0 = load double* %a, align 8
; CHECK-AO: %i1 = load double* %b, align 8
; CHECK-AO: %mul.v.i1.1 = insertelement <2 x double> undef, double %i1, i32 0
; CHECK-AO: %mul.v.i0.1 = insertelement <2 x double> undef, double %i0, i32 0
; CHECK-AO: %arrayidx3 = getelementptr inbounds double* %a, i64 1
; CHECK-AO: %i3 = load double* %arrayidx3, align 8
; CHECK-AO: %arrayidx4 = getelementptr inbounds double* %b, i64 1
; CHECK-AO: %i4 = load double* %arrayidx4, align 8
; CHECK-AO: %mul.v.i1.2 = insertelement <2 x double> %mul.v.i1.1, double %i4, i32 1
; CHECK-AO: %mul.v.i0.2 = insertelement <2 x double> %mul.v.i0.1, double %i3, i32 1
; CHECK-AO: %mul = fmul <2 x double> %mul.v.i0.2, %mul.v.i1.2
; CHECK-AO: %mulf = fptrunc <2 x double> %mul to <2 x float>
; CHECK-AO: %0 = bitcast float* %c to <2 x float>*
; CHECK-AO: store <2 x float> %mulf, <2 x float>* %0, align 8
; CHECK-AO: ret void
}
BBVectorize should ignore unreachable blocks. Unreachable blocks can have invalid instructions. For example, jump threading can produce self-referential instructions in unreachable blocks. Also, we should not be spending time optimizing unreachable code. Fixes PR14133. llvm-svn: 166423
2012-10-23 02:00:55 +08:00
; Simple 3-pair chain with loads and stores (unreachable)
define void @test4(i1 %bool, double* %a, double* %b, double* %c) nounwind uwtable readonly {
entry:
br i1 %bool, label %if.then1, label %if.end
if.then1:
unreachable
br label %if.then
if.then:
%i0 = load double* %a, align 8
%i1 = load double* %b, align 8
%mul = fmul double %i0, %i1
%arrayidx3 = getelementptr inbounds double* %a, i64 1
%i3 = load double* %arrayidx3, align 8
%arrayidx4 = getelementptr inbounds double* %b, i64 1
%i4 = load double* %arrayidx4, align 8
%mul5 = fmul double %i3, %i4
store double %mul, double* %c, align 8
%arrayidx5 = getelementptr inbounds double* %c, i64 1
store double %mul5, double* %arrayidx5, align 8
br label %if.end
if.end:
ret void
; CHECK: @test4
; CHECK-NOT: <2 x double>
; CHECK-AO: @test4
; CHECK-AO-NOT: <2 x double>
}
BBVectorize: Fix a small bug introduced in r167042. We need to make sure that we take the correct load/store alignment when the inputs are flipped. llvm-svn: 167044
2012-10-31 03:47:37 +08:00
; Simple 3-pair chain with loads and stores
define void @test5(double* %a, double* %b, double* %c) nounwind uwtable readonly {
entry:
%i0 = load double* %a, align 8
%i1 = load double* %b, align 8
%mul = fmul double %i0, %i1
%arrayidx3 = getelementptr inbounds double* %a, i64 1
%i3 = load double* %arrayidx3, align 8
%arrayidx4 = getelementptr inbounds double* %b, i64 1
%i4 = load double* %arrayidx4, align 8
%mul5 = fmul double %i3, %i4
%arrayidx5 = getelementptr inbounds double* %c, i64 1
store double %mul5, double* %arrayidx5, align 8
store double %mul, double* %c, align 4
ret void
; CHECK: @test5
; CHECK: %i0.v.i0 = bitcast double* %a to <2 x double>*
; CHECK: %i1.v.i0 = bitcast double* %b to <2 x double>*
; CHECK: %i0 = load <2 x double>* %i0.v.i0, align 8
; CHECK: %i1 = load <2 x double>* %i1.v.i0, align 8
; CHECK: %mul = fmul <2 x double> %i0, %i1
; CHECK: %0 = bitcast double* %c to <2 x double>*
; CHECK: store <2 x double> %mul, <2 x double>* %0, align 4
; CHECK: ret void
; CHECK-AO: @test5
; CHECK-AO-NOT: <2 x double>
}