// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 5
// RUN: %clang_cc1 -std=c++1z -Werror -triple i386-unknown-unknown -emit-llvm -O1 -disable-llvm-passes -o - %s | FileCheck %s

// std::byte should be considered equivalent to char for aliasing.

namespace std {
enum byte : unsigned char {};
}

// CHECK-LABEL: define dso_local void @test0(
// CHECK-SAME: ptr noundef [[SB:%.*]], ptr noundef [[I:%.*]]) #[[ATTR0:[0-9]+]] {
// CHECK-NEXT:  [[ENTRY:.*:]]
// CHECK-NEXT:    [[SB_ADDR:%.*]] = alloca ptr, align 4
// CHECK-NEXT:    [[I_ADDR:%.*]] = alloca ptr, align 4
// CHECK-NEXT:    store ptr [[SB]], ptr [[SB_ADDR]], align 4, !tbaa [[TBAA7:![0-9]+]]
// CHECK-NEXT:    store ptr [[I]], ptr [[I_ADDR]], align 4, !tbaa [[TBAA9:![0-9]+]]
// CHECK-NEXT:    [[TMP0:%.*]] = load ptr, ptr [[SB_ADDR]], align 4, !tbaa [[TBAA7]]
// CHECK-NEXT:    store i8 0, ptr [[TMP0]], align 1, !tbaa [[TBAA11:![0-9]+]]
// CHECK-NEXT:    [[TMP1:%.*]] = load ptr, ptr [[I_ADDR]], align 4, !tbaa [[TBAA9]]
// CHECK-NEXT:    store i32 1, ptr [[TMP1]], align 4, !tbaa [[TBAA12:![0-9]+]]
// CHECK-NEXT:    ret void
//
extern "C" void test0(std::byte *sb, int *i) {
  *sb = std::byte{0};

  *i = 1;
}

enum byte : unsigned char {};
namespace my {
enum byte : unsigned char {};
namespace std {
enum byte : unsigned char {};
} // namespace std
} // namespace my

// Make sure we don't get confused with other enums named 'byte'.

// CHECK-LABEL: define dso_local void @test1(
// CHECK-SAME: ptr noundef [[B:%.*]], ptr noundef [[MB:%.*]], ptr noundef [[MSB:%.*]]) #[[ATTR0]] {
// CHECK-NEXT:  [[ENTRY:.*:]]
// CHECK-NEXT:    [[B_ADDR:%.*]] = alloca ptr, align 4
// CHECK-NEXT:    [[MB_ADDR:%.*]] = alloca ptr, align 4
// CHECK-NEXT:    [[MSB_ADDR:%.*]] = alloca ptr, align 4
// CHECK-NEXT:    store ptr [[B]], ptr [[B_ADDR]], align 4, !tbaa [[TBAA7]]
// CHECK-NEXT:    store ptr [[MB]], ptr [[MB_ADDR]], align 4, !tbaa [[TBAA7]]
// CHECK-NEXT:    store ptr [[MSB]], ptr [[MSB_ADDR]], align 4, !tbaa [[TBAA7]]
// CHECK-NEXT:    [[TMP0:%.*]] = load ptr, ptr [[B_ADDR]], align 4, !tbaa [[TBAA7]]
// CHECK-NEXT:    store i8 0, ptr [[TMP0]], align 1, !tbaa [[TBAA13:![0-9]+]]
// CHECK-NEXT:    [[TMP1:%.*]] = load ptr, ptr [[MB_ADDR]], align 4, !tbaa [[TBAA7]]
// CHECK-NEXT:    store i8 0, ptr [[TMP1]], align 1, !tbaa [[TBAA15:![0-9]+]]
// CHECK-NEXT:    [[TMP2:%.*]] = load ptr, ptr [[MSB_ADDR]], align 4, !tbaa [[TBAA7]]
// CHECK-NEXT:    store i8 0, ptr [[TMP2]], align 1, !tbaa [[TBAA17:![0-9]+]]
// CHECK-NEXT:    ret void
//
extern "C" void test1(::byte *b, ::my::byte *mb, ::my::std::byte *msb) {
  *b = ::byte{0};
  *mb = ::my::byte{0};
  *msb = ::my::std::byte{0};
}

//.
// CHECK: [[META4:![0-9]+]] = !{!"int", [[META5:![0-9]+]], i64 0}
// CHECK: [[META5]] = !{!"omnipotent char", [[META6:![0-9]+]], i64 0}
// CHECK: [[META6]] = !{!"Simple C++ TBAA"}
// CHECK: [[TBAA7]] = !{[[META8:![0-9]+]], [[META8]], i64 0}
// CHECK: [[META8]] = !{!"any pointer", [[META5]], i64 0}
// CHECK: [[TBAA9]] = !{[[META10:![0-9]+]], [[META10]], i64 0}
// CHECK: [[META10]] = !{!"p1 int", [[META8]], i64 0}
// CHECK: [[TBAA11]] = !{[[META5]], [[META5]], i64 0}
// CHECK: [[TBAA12]] = !{[[META4]], [[META4]], i64 0}
// CHECK: [[TBAA13]] = !{[[META14:![0-9]+]], [[META14]], i64 0}
// CHECK: [[META14]] = !{!"_ZTS4byte", [[META5]], i64 0}
// CHECK: [[TBAA15]] = !{[[META16:![0-9]+]], [[META16]], i64 0}
// CHECK: [[META16]] = !{!"_ZTSN2my4byteE", [[META5]], i64 0}
// CHECK: [[TBAA17]] = !{[[META18:![0-9]+]], [[META18]], i64 0}
// CHECK: [[META18]] = !{!"_ZTSN2my3std4byteE", [[META5]], i64 0}
//.