; RUN: opt < %s -S -instcombine | FileCheck %s

declare i32 @llvm.bitreverse.i32(i32)

; CHECK-LABEL: @test1
; CHECK: ret i1 true
define i1 @test1(i32 %arg) {
  %a = or i32 %arg, 4294901760
  %b = call i32 @llvm.bitreverse.i32(i32 %a)
  %and = and i32 %b, 65535
  %res = icmp eq i32 %and, 65535
  ret i1 %res
}

; CHECK-LABEL: @test2
; CHECK: ret i1 true
define i1 @test2(i32 %arg) {
  %a = or i32 %arg, 1
  %b = call i32 @llvm.bitreverse.i32(i32 %a)
  %c = and i32 %b, 2147483648
  %d = call i32 @llvm.bitreverse.i32(i32 %c)
  %res = icmp eq i32 %d, 1
  ret i1 %res
}

; CHECK-LABEL: @test3
; CHECK: ret i1 false
define i1 @test3(i32 %arg) {
  %a = or i32 %arg, 65536
  %b = call i32 @llvm.bitreverse.i32(i32 %a)
  %and = and i32 %b, 32768
  %res = icmp eq i32 %and, 0
  ret i1 %res
}