derek.holloway
7502bf64a4
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31 lines
1.0 KiB
LLVM
31 lines
1.0 KiB
LLVM
; RUN: opt -passes=loop-vectorize -pass-remarks-analysis=loop-vectorize -S < %s 2>&1 | FileCheck %s
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; Make sure the unsafe user specified interleave count is ignored.
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; CHECK: remark: <unknown>:0:0: Ignoring user-specified interleave count due to possibly unsafe dependencies in the loop.
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; CHECK-LABEL: @loop_distance_4
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define void @loop_distance_4(ptr %a, ptr %b) {
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entry:
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br label %loop
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loop:
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%iv = phi i64 [ 4, %entry ], [ %iv.next, %loop ]
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%0 = getelementptr i32, ptr %b, i64 %iv
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%arrayidx = getelementptr i8, ptr %0, i64 -16
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%1 = load i32, ptr %arrayidx, align 4
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%arrayidx2 = getelementptr inbounds nuw i32, ptr %a, i64 %iv
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%2 = load i32, ptr %arrayidx2, align 4
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%add = add nsw i32 %2, %1
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store i32 %add, ptr %0, 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, 64
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br i1 %exitcond.not, label %for.end, label %loop, !llvm.loop !1
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for.end:
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ret void
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}
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!1 = !{!1, !2, !3}
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!2 = !{!"llvm.loop.interleave.count", i32 4}
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!3 = !{!"llvm.loop.vectorize.width", i32 4}
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