derek.holloway
7502bf64a4
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37 lines
1.0 KiB
LLVM
37 lines
1.0 KiB
LLVM
; RUN: llc -mtriple=aarch64 -stop-after=loop-reduce < %s | FileCheck %s
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declare void @foo(i64)
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; Verify that redundant adds or geps aren't inserted by LSR.
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; CHECK-LABEL: @bar(
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define void @bar(ptr %A) {
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entry:
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br label %while.cond
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while.cond:
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; CHECK-LABEL: while.cond:
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; CHECK-NOT: add i64 %lsr.iv, 1
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; CHECK-LABEL: land.rhs:
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; CHECK: getelementptr i8, ptr %lsr.iv, i64 -8
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; CHECK-NOT: getelementptr i8, ptr %lsr.iv, i64 -8
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; CHECK-NOT: add i64, %lsr.iv, 1
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%indvars.iv28 = phi i64 [ %indvars.iv.next29, %land.rhs ], [ 50, %entry ]
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%cmp = icmp sgt i64 %indvars.iv28, 0
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br i1 %cmp, label %land.rhs, label %while.end
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land.rhs:
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%indvars.iv.next29 = add nsw i64 %indvars.iv28, -1
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%arrayidx = getelementptr inbounds double, ptr %A, i64 %indvars.iv.next29
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%Aload = load double, ptr %arrayidx, align 8
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%cmp1 = fcmp oeq double %Aload, 0.000000e+00
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br i1 %cmp1, label %while.cond, label %if.end
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while.end:
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%indvars.iv28.lcssa = phi i64 [ %indvars.iv28, %while.cond ]
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tail call void @foo(i64 %indvars.iv28.lcssa)
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br label %if.end
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if.end:
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ret void
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}
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