forked from OSchip/llvm-project
38 lines
1.7 KiB
LLVM
38 lines
1.7 KiB
LLVM
; RUN: opt -S -loop-vectorize -mattr=+sve -mtriple aarch64-linux-gnu \
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; RUN: -prefer-predicate-over-epilogue=scalar-epilogue < %s | FileCheck %s
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define void @invariant_load(i64 %n, i32* noalias nocapture %a, i32* nocapture readonly %b) {
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; CHECK-LABEL: @invariant_load
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; CHECK: vector.body:
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; CHECK: %[[GEP:.*]] = getelementptr inbounds i32, i32* %b, i64 42
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; CHECK-NEXT: %[[INVLOAD:.*]] = load i32, i32* %[[GEP]]
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; CHECK-NEXT: %[[SPLATINS:.*]] = insertelement <vscale x 4 x i32> poison, i32 %[[INVLOAD]], i32 0
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; CHECK-NEXT: %[[SPLAT:.*]] = shufflevector <vscale x 4 x i32> %[[SPLATINS]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
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; CHECK: %[[LOAD:.*]] = load <vscale x 4 x i32>, <vscale x 4 x i32>*
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; CHECK-NEXT: %[[ADD:.*]] = add nsw <vscale x 4 x i32> %[[SPLAT]], %[[LOAD]]
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; CHECK: store <vscale x 4 x i32> %[[ADD]], <vscale x 4 x i32>*
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entry:
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br label %for.body
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for.body: ; preds = %for.body.lr.ph, %for.body
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%iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
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%arrayidx = getelementptr inbounds i32, i32* %b, i64 42
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%0 = load i32, i32* %arrayidx, align 4
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%arrayidx1 = getelementptr inbounds i32, i32* %b, i64 %iv
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%1 = load i32, i32* %arrayidx1, align 4
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%add = add nsw i32 %0, %1
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%arrayidx2 = getelementptr inbounds i32, i32* %a, i64 %iv
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store i32 %add, i32* %arrayidx2, align 4
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%iv.next = add nuw nsw i64 %iv, 1
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%exitcond.not = icmp eq i64 %iv.next, %n
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br i1 %exitcond.not, label %for.end, label %for.body, !llvm.loop !1
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for.end: ; preds = %for.body
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ret void
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}
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!1 = distinct !{!1, !2, !3, !4}
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!2 = !{!"llvm.loop.vectorize.width", i32 4}
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!3 = !{!"llvm.loop.interleave.count", i32 1}
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!4 = !{!"llvm.loop.vectorize.scalable.enable", i1 true}
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