58 lines
2.4 KiB
LLVM
58 lines
2.4 KiB
LLVM
; REQUIRES: asserts
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; RUN: opt -passes=loop-vectorize -force-vector-width=1 -force-vector-interleave=2 -debug -S %s 2>&1 | FileCheck %s
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; CHECK: VPlan 'Initial VPlan for VF={1},UF>=1' {
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; CHECK-NEXT: Live-in vp<[[VEC_TC:%.+]]> = vector-trip-count
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; CHECK-EMPTY:
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; CHECK-NEXT: vector.ph:
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; CHECK-NEXT: Successor(s): vector loop
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; CHECK-EMPTY:
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; CHECK-NEXT: <x1> vector loop: {
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; CHECK-NEXT: vector.body:
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; CHECK-NEXT: EMIT vp<[[CAN_IV:%.+]]> = CANONICAL-INDUCTION
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; CHECK-NEXT: vp<[[IV_STEPS:%.]]> = SCALAR-STEPS vp<[[CAN_IV]]>, ir<%start>, ir<1>
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; CHECK-NEXT: CLONE ir<%min> = call vp<[[IV_STEPS]]>, ir<65535>, ir<@llvm.smin.i32>
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; CHECK-NEXT: CLONE ir<%arrayidx> = getelementptr ir<%dst>, vp<[[IV_STEPS]]>
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; CHECK-NEXT: CLONE store ir<%min>, ir<%arrayidx>
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; CHECK-NEXT: EMIT vp<[[INC:%.+]]> = VF * UF +(nuw) vp<[[CAN_IV]]>
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; CHECK-NEXT: EMIT branch-on-count vp<[[INC]]> vp<[[VEC_TC]]>
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; CHECK-NEXT: No successors
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; CHECK-NEXT: }
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;
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define void @test(i32 %start, ptr %dst) {
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; CHECK-LABEL: @test(
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; CHECK: vector.body:
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; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, %vector.ph ], [ [[INDEX_NEXT:%.*]], %vector.body ]
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; CHECK-NEXT: [[OFFSET_IDX:%.*]] = add i32 %start, [[INDEX]]
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; CHECK-NEXT: [[INDUCTION:%.*]] = add i32 [[OFFSET_IDX]], 0
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; CHECK-NEXT: [[INDUCTION1:%.*]] = add i32 [[OFFSET_IDX]], 1
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; CHECK-NEXT: [[TMP1:%.*]] = tail call i32 @llvm.smin.i32(i32 [[INDUCTION]], i32 65535)
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; CHECK-NEXT: [[TMP2:%.*]] = tail call i32 @llvm.smin.i32(i32 [[INDUCTION1]], i32 65535)
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; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds i32, ptr [[DST:%.*]], i32 [[INDUCTION]]
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; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds i32, ptr [[DST]], i32 [[INDUCTION1]]
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; CHECK-NEXT: store i32 [[TMP1]], ptr [[TMP3]], align 8
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; CHECK-NEXT: store i32 [[TMP2]], ptr [[TMP4]], align 8
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; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 2
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; CHECK-NEXT: [[TMP5:%.*]] = icmp eq i32 [[INDEX_NEXT]], %n.vec
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; CHECK-NEXT: br i1 [[TMP5]], label %middle.block, label %vector.body
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; CHECK: middle.block:
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;
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entry:
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br label %loop
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loop:
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%iv = phi i32 [ %start, %entry ], [ %iv.next, %loop ]
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%min = tail call i32 @llvm.smin.i32(i32 %iv, i32 65535)
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%arrayidx = getelementptr inbounds i32 , ptr %dst, i32 %iv
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store i32 %min, ptr %arrayidx, align 8
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%iv.next = add nsw i32 %iv, 1
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%tobool.not = icmp eq i32 %iv.next, 1000
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br i1 %tobool.not, label %exit, label %loop
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exit:
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ret void
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}
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declare i32 @llvm.smin.i32(i32, i32)
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