File: 2002-09-09-PointerIndVar.ll

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llvm 2.6-9.1
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; Induction variable pass is doing bad things with pointer induction vars, 
; trying to do arithmetic on them directly.
;
; RUN: llvm-as < %s | opt -indvars
;
define void @test(i32 %A, i32 %S, i8* %S.upgrd.1) {
; <label>:0
        br label %Loop

Loop:           ; preds = %Loop, %0
        %PIV = phi i8* [ %S.upgrd.1, %0 ], [ %PIVNext.upgrd.3, %Loop ]          ; <i8*> [#uses=1]
        %PIV.upgrd.2 = ptrtoint i8* %PIV to i64         ; <i64> [#uses=1]
        %PIVNext = add i64 %PIV.upgrd.2, 8              ; <i64> [#uses=1]
        %PIVNext.upgrd.3 = inttoptr i64 %PIVNext to i8*         ; <i8*> [#uses=1]
        br label %Loop
}