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b89304eb7c
The SLP vectorizer should propagate IR-level optimization hints/flags (nsw, nuw, exact, fast-math) when converting scalar instructions into vectors. But this isn't a simple copy - we need to take the intersection (the logical 'and') of the sets of flags on the scalars. The solution is further complicated because we can have non-uniform (non-SIMD) vector ops after: http://reviews.llvm.org/D4015 http://llvm.org/viewvc/llvm-project?view=revision&revision=211339 The vast majority of changed files are existing tests that were not propagating IR flags, but I've also added a new test file for focused testing of IR flag possibilities. Differential Revision: http://reviews.llvm.org/D5172 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217051 91177308-0d34-0410-b5e6-96231b3b80d8
76 lines
2.7 KiB
LLVM
76 lines
2.7 KiB
LLVM
; RUN: opt -S -slp-vectorizer %s | FileCheck %s
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target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
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target triple = "aarch64--linux-gnu"
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%structA = type { [2 x float] }
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define void @test1(%structA* nocapture readonly %J, i32 %xmin, i32 %ymin) {
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; CHECK-LABEL: test1
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; CHECK: %arrayidx4 = getelementptr inbounds %structA* %J, i64 0, i32 0, i64 0
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; CHECK: %arrayidx9 = getelementptr inbounds %structA* %J, i64 0, i32 0, i64 1
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; CHECK: %3 = bitcast float* %arrayidx4 to <2 x float>*
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; CHECK: %4 = load <2 x float>* %3, align 4
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; CHECK: %5 = fsub fast <2 x float> %2, %4
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; CHECK: %6 = fmul fast <2 x float> %5, %5
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; CHECK: %7 = extractelement <2 x float> %6, i32 0
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; CHECK: %8 = extractelement <2 x float> %6, i32 1
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; CHECK: %add = fadd fast float %7, %8
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; CHECK: %cmp = fcmp oeq float %add, 0.000000e+00
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entry:
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br label %for.body3.lr.ph
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for.body3.lr.ph:
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%conv5 = sitofp i32 %ymin to float
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%conv = sitofp i32 %xmin to float
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%arrayidx4 = getelementptr inbounds %structA* %J, i64 0, i32 0, i64 0
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%0 = load float* %arrayidx4, align 4
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%sub = fsub fast float %conv, %0
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%arrayidx9 = getelementptr inbounds %structA* %J, i64 0, i32 0, i64 1
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%1 = load float* %arrayidx9, align 4
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%sub10 = fsub fast float %conv5, %1
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%mul11 = fmul fast float %sub, %sub
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%mul12 = fmul fast float %sub10, %sub10
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%add = fadd fast float %mul11, %mul12
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%cmp = fcmp oeq float %add, 0.000000e+00
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br i1 %cmp, label %for.body3.lr.ph, label %for.end27
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for.end27:
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ret void
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}
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define void @test2(%structA* nocapture readonly %J, i32 %xmin, i32 %ymin) {
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; CHECK-LABEL: test2
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; CHECK: %arrayidx4 = getelementptr inbounds %structA* %J, i64 0, i32 0, i64 0
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; CHECK: %arrayidx9 = getelementptr inbounds %structA* %J, i64 0, i32 0, i64 1
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; CHECK: %3 = bitcast float* %arrayidx4 to <2 x float>*
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; CHECK: %4 = load <2 x float>* %3, align 4
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; CHECK: %5 = fsub fast <2 x float> %2, %4
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; CHECK: %6 = fmul fast <2 x float> %5, %5
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; CHECK: %7 = extractelement <2 x float> %6, i32 0
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; CHECK: %8 = extractelement <2 x float> %6, i32 1
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; CHECK: %add = fadd fast float %8, %7
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; CHECK: %cmp = fcmp oeq float %add, 0.000000e+00
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entry:
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br label %for.body3.lr.ph
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for.body3.lr.ph:
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%conv5 = sitofp i32 %ymin to float
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%conv = sitofp i32 %xmin to float
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%arrayidx4 = getelementptr inbounds %structA* %J, i64 0, i32 0, i64 0
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%0 = load float* %arrayidx4, align 4
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%sub = fsub fast float %conv, %0
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%arrayidx9 = getelementptr inbounds %structA* %J, i64 0, i32 0, i64 1
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%1 = load float* %arrayidx9, align 4
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%sub10 = fsub fast float %conv5, %1
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%mul11 = fmul fast float %sub, %sub
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%mul12 = fmul fast float %sub10, %sub10
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%add = fadd fast float %mul12, %mul11 ;;;<---- Operands commuted!!
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%cmp = fcmp oeq float %add, 0.000000e+00
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br i1 %cmp, label %for.body3.lr.ph, label %for.end27
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for.end27:
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ret void
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}
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