view test/Transforms/IndVarSimplify/2006-03-31-NegativeStride.ll @ 100:7d135dc70f03 LLVM 3.9

LLVM 3.9
author Miyagi Mitsuki <e135756@ie.u-ryukyu.ac.jp>
date Tue, 26 Jan 2016 22:53:40 +0900
parents 95c75e76d11b
children 1172e4bd9c6f
line wrap: on
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; PR726
; RUN: opt < %s -indvars -S | \
; RUN:   grep "ret i32 27"

; Make sure to compute the right exit value based on negative strides.

define i32 @test() {
entry:
        br label %cond_true

cond_true:              ; preds = %cond_true, %entry
        %a.0.0 = phi i32 [ 10, %entry ], [ %tmp4, %cond_true ]          ; <i32> [#uses=2]
        %b.0.0 = phi i32 [ 0, %entry ], [ %tmp2, %cond_true ]           ; <i32> [#uses=1]
        %tmp2 = add i32 %b.0.0, %a.0.0          ; <i32> [#uses=2]
        %tmp4 = add i32 %a.0.0, -1              ; <i32> [#uses=2]
        %tmp = icmp sgt i32 %tmp4, 7            ; <i1> [#uses=1]
        br i1 %tmp, label %cond_true, label %bb7

bb7:            ; preds = %cond_true
        ret i32 %tmp2
}