94 lines
2.8 KiB
LLVM
94 lines
2.8 KiB
LLVM
; RUN: opt < %s -basicaa -slp-vectorizer -S -slp-schedule-budget=16 -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7-avx | FileCheck %s
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.9.0"
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; Test if the budget for the scheduling region size works.
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; We test with a reduced budget of 16 which should prevent vectorizing the loads.
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declare void @unknown()
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; CHECK-LABEL: @test
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; CHECK: load float
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; CHECK: load float
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; CHECK: load float
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; CHECK: load float
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; CHECK: call void @unknown
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; CHECK: store float
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; CHECK: store float
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; CHECK: store float
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; CHECK: store float
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; CHECK: load <4 x float>
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; CHECK: store <4 x float>
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define void @test(float * %a, float * %b, float * %c, float * %d) {
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entry:
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; Don't vectorize these loads.
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%l0 = load float, float* %a
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%a1 = getelementptr inbounds float, float* %a, i64 1
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%l1 = load float, float* %a1
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%a2 = getelementptr inbounds float, float* %a, i64 2
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%l2 = load float, float* %a2
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%a3 = getelementptr inbounds float, float* %a, i64 3
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%l3 = load float, float* %a3
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; some unrelated instructions inbetween to enlarge the scheduling region
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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call void @unknown()
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; Don't vectorize these stores because their operands are too far away.
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store float %l0, float* %b
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%b1 = getelementptr inbounds float, float* %b, i64 1
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store float %l1, float* %b1
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%b2 = getelementptr inbounds float, float* %b, i64 2
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store float %l2, float* %b2
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%b3 = getelementptr inbounds float, float* %b, i64 3
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store float %l3, float* %b3
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; But still vectorize the following instructions, because even if the budget
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; is exceeded there is a minimum region size.
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%l4 = load float, float* %c
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%c1 = getelementptr inbounds float, float* %c, i64 1
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%l5 = load float, float* %c1
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%c2 = getelementptr inbounds float, float* %c, i64 2
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%l6 = load float, float* %c2
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%c3 = getelementptr inbounds float, float* %c, i64 3
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%l7 = load float, float* %c3
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store float %l4, float* %d
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%d1 = getelementptr inbounds float, float* %d, i64 1
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store float %l5, float* %d1
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%d2 = getelementptr inbounds float, float* %d, i64 2
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store float %l6, float* %d2
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%d3 = getelementptr inbounds float, float* %d, i64 3
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store float %l7, float* %d3
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ret void
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}
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