| ; RUN: opt -instsimplify -S < %s | FileCheck %s | |
| ; CHECK-LABEL: @test | |
| define i1 @test(i8 %p, i8* %pq) { | |
| %q = load i8, i8* %pq, !range !0 ; %q is known nonzero; no known bits | |
| %1 = or i8 %p, 2 ; %1[1] = 1 | |
| %2 = and i8 %1, 254 ; %2[0] = 0, %2[1] = 1 | |
| %A = lshr i8 %2, 1 ; We should know that %A is nonzero. | |
| %x = icmp eq i8 %A, 0 | |
| ; CHECK: ret i1 false | |
| ret i1 %x | |
| } | |
| !0 = !{ i8 1, i8 5 } |