text: ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
  ; RUN: opt < %s -instsimplify -S | FileCheck %s
  
  define i32 @negate_nuw(i32 %x) {
  ; CHECK-LABEL: @negate_nuw(
  ; CHECK-NEXT:    ret i32 0
  ;
    %neg = sub nuw i32 0, %x
    ret i32 %neg
  }
  
  define <2 x i32> @negate_nuw_vec(<2 x i32> %x) {
  ; CHECK-LABEL: @negate_nuw_vec(
  ; CHECK-NEXT:    ret <2 x i32> zeroinitializer
  ;
    %neg = sub nuw <2 x i32> zeroinitializer, %x
    ret <2 x i32> %neg
  }
  
  define i8 @negate_zero_or_minsigned_nsw(i8 %x) {
  ; CHECK-LABEL: @negate_zero_or_minsigned_nsw(
  ; CHECK-NEXT:    ret i8 0
  ;
    %signbit = and i8 %x, 128
    %neg = sub nsw i8 0, %signbit
    ret i8 %neg
  }
  
  define <2 x i8> @negate_zero_or_minsigned_nsw_vec(<2 x i8> %x) {
  ; CHECK-LABEL: @negate_zero_or_minsigned_nsw_vec(
  ; CHECK-NEXT:    ret <2 x i8> zeroinitializer
  ;
    %signbit = shl <2 x i8> %x, <i8 7, i8 7>
    %neg = sub nsw <2 x i8> zeroinitializer, %signbit
    ret <2 x i8> %neg
  }
  
  define i8 @negate_zero_or_minsigned(i8 %x) {
  ; CHECK-LABEL: @negate_zero_or_minsigned(
  ; CHECK-NEXT:    [[SIGNBIT:%.*]] = shl i8 %x, 7
  ; CHECK-NEXT:    ret i8 [[SIGNBIT]]
  ;
    %signbit = shl i8 %x, 7
    %neg = sub i8 0, %signbit
    ret i8 %neg
  }
  
  define <2 x i8> @negate_zero_or_minsigned_vec(<2 x i8> %x) {
  ; CHECK-LABEL: @negate_zero_or_minsigned_vec(
  ; CHECK-NEXT:    [[SIGNBIT:%.*]] = and <2 x i8> %x, <i8 -128, i8 -128>
  ; CHECK-NEXT:    ret <2 x i8> [[SIGNBIT]]
  ;
    %signbit = and <2 x i8> %x, <i8 128, i8 128>
    %neg = sub <2 x i8> zeroinitializer, %signbit
    ret <2 x i8> %neg
  }
  
  