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

define i64 @test1(i32 %x) nounwind {
; CHECK-LABEL: @test1(
; CHECK-NEXT:    ret i64 0
;
  %y = lshr i32 %x, 1
  %r = udiv i32 %y, -1
  %z = sext i32 %r to i64
  ret i64 %z
}
define i64 @test2(i32 %x) nounwind {
; CHECK-LABEL: @test2(
; CHECK-NEXT:    ret i64 0
;
  %y = lshr i32 %x, 31
  %r = udiv i32 %y, 3
  %z = sext i32 %r to i64
  ret i64 %z
}

; The udiv instructions shouldn't be optimized away, and the
; sext instructions should be optimized to zext.

define i64 @test1_PR2274(i32 %x, i32 %g) nounwind {
; CHECK-LABEL: @test1_PR2274(
; CHECK-NEXT:    [[Y:%.*]] = lshr i32 %x, 30
; CHECK-NEXT:    [[R:%.*]] = udiv i32 [[Y]], %g
; CHECK-NEXT:    [[Z1:%.*]] = zext i32 [[R]] to i64
; CHECK-NEXT:    ret i64 [[Z1]]
;
  %y = lshr i32 %x, 30
  %r = udiv i32 %y, %g
  %z = sext i32 %r to i64
  ret i64 %z
}
define i64 @test2_PR2274(i32 %x, i32 %v) nounwind {
; CHECK-LABEL: @test2_PR2274(
; CHECK-NEXT:    [[Y:%.*]] = lshr i32 %x, 31
; CHECK-NEXT:    [[R:%.*]] = udiv i32 [[Y]], %v
; CHECK-NEXT:    [[Z1:%.*]] = zext i32 [[R]] to i64
; CHECK-NEXT:    ret i64 [[Z1]]
;
  %y = lshr i32 %x, 31
  %r = udiv i32 %y, %v
  %z = sext i32 %r to i64
  ret i64 %z
}