llvm-for-llvmta/test/Analysis/ScalarEvolution/div-overflow.ll

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2022-04-25 10:02:23 +02:00
; RUN: opt < %s -scalar-evolution -analyze -enable-new-pm=0 | FileCheck %s
; RUN: opt < %s "-passes=print<scalar-evolution>" -disable-output 2>&1 | 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
}