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add testcase from Ryotaro Kasuga's review
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llvm/test/Analysis/DependenceAnalysis/DifferentOffsets.ll

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@@ -70,3 +70,25 @@ entry:
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%0 = load i32, ptr %arrayidx1, align 1
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ret i32 %0
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}
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define i32 @gep_i8_vs_i32(ptr nocapture %A, i64 %n, i64 %m) {
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; CHECK-LABEL: 'gep_i8_vs_i32'
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; CHECK-NEXT: Src: store i32 42, ptr %arrayidx0, align 1 --> Dst: store i32 42, ptr %arrayidx0, align 1
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; CHECK-NEXT: da analyze - none!
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; CHECK-NEXT: Src: store i32 42, ptr %arrayidx0, align 1 --> Dst: store i32 42, ptr %arrayidx1, align 4
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; CHECK-NEXT: da analyze - output [|<]!
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; CHECK-NEXT: Runtime Assumptions:
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; CHECK-NEXT: Equal predicate: (zext i2 (trunc i64 %n to i2) to i64) == 0
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; CHECK-NEXT: Src: store i32 42, ptr %arrayidx1, align 4 --> Dst: store i32 42, ptr %arrayidx1, align 4
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; CHECK-NEXT: da analyze - none!
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; CHECK-NEXT: Runtime Assumptions:
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; CHECK-NEXT: Equal predicate: (zext i2 (trunc i64 %n to i2) to i64) == 0
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;
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entry:
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%arrayidx0 = getelementptr inbounds i8, ptr %A, i64 %n
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store i32 42, ptr %arrayidx0, align 1
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%arrayidx1 = getelementptr inbounds i32, ptr %A, i64 %m
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store i32 42, ptr %arrayidx1, align 4
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ret i32 0
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}

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