third_party/llvm-7.0/llvm/test/Analysis/ScalarEvolution/div-overflow.ll

; RUN: opt < %s -scalar-evolution -analyze | FileCheck %s

; CHECK: -->  ((-128 * %a) /u -128)

; Don't let ScalarEvolution fold this div away.

define i8 @foo(i8 %a) {
        %t0 = shl i8 %a, 7
        %t1 = lshr i8 %t0, 7
        ret i8 %t1
}