; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instcombine -S | FileCheck %s

define i1 @PR2539_A(i1 %A) {
; CHECK-LABEL: @PR2539_A(
; CHECK-NEXT:    [[C:%.*]] = xor i1 %A, true
; CHECK-NEXT:    ret i1 [[C]]
;
  %B = zext i1 %A to i32
  %C = icmp slt i32 %B, 1
  ret i1 %C
}


define i1 @PR2539_B(i1 zeroext %b) {
; CHECK-LABEL: @PR2539_B(
; CHECK-NEXT:    ret i1 false
;
  %cmp = icmp slt i1 %b, true
  ret i1 %cmp
}