derek.holloway
7502bf64a4
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46 lines
1.6 KiB
LLVM
46 lines
1.6 KiB
LLVM
; RUN: opt -passes=loop-idiom -S <%s | FileCheck %s
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define void @memcpy_fixed_vec(ptr noalias %a, ptr noalias %b) local_unnamed_addr #1 {
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; CHECK-LABEL: @memcpy_fixed_vec(
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; CHECK: entry:
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; CHECK: memcpy
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; CHECK: vector.body
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entry:
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br label %vector.body
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vector.body: ; preds = %vector.body, %entry
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%index = phi i64 [ 0, %entry ], [ %index.next, %vector.body ]
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%0 = getelementptr inbounds i64, ptr %a, i64 %index
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%wide.load = load <2 x i64>, ptr %0, align 8
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%1 = getelementptr inbounds i64, ptr %b, i64 %index
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store <2 x i64> %wide.load, ptr %1, align 8
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%index.next = add nuw nsw i64 %index, 2
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%2 = icmp eq i64 %index.next, 1024
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br i1 %2, label %for.cond.cleanup, label %vector.body
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for.cond.cleanup: ; preds = %vector.body
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ret void
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}
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define void @memcpy_scalable_vec(ptr noalias %a, ptr noalias %b) local_unnamed_addr #1 {
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; CHECK-LABEL: @memcpy_scalable_vec(
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; CHECK: entry:
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; CHECK-NOT: memcpy
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; CHECK: vector.body
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entry:
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br label %vector.body
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vector.body: ; preds = %vector.body, %entry
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%index = phi i64 [ 0, %entry ], [ %index.next, %vector.body ]
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%0 = getelementptr inbounds <vscale x 2 x i64>, ptr %a, i64 %index
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%wide.load = load <vscale x 2 x i64>, ptr %0, align 16
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%1 = getelementptr inbounds <vscale x 2 x i64>, ptr %b, i64 %index
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store <vscale x 2 x i64> %wide.load, ptr %1, align 16
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%index.next = add nuw nsw i64 %index, 1
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%2 = icmp eq i64 %index.next, 1024
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br i1 %2, label %for.cond.cleanup, label %vector.body
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for.cond.cleanup: ; preds = %vector.body
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ret void
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}
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