45 lines · cpp
1// RUN: %clang_cc1 -std=c++20 %s -triple x86_64-linux -emit-llvm -o - | FileCheck %s2 3// GH614174// Check that we don't attempt to compare the unnamed bitfields5struct A {6 unsigned x : 1;7 unsigned : 1;8 9 friend bool operator==(A, A);10};11 12 13struct B {14 unsigned x : 1;15 unsigned : 31;16 17 friend bool operator==(B, B);18};19 20bool operator==(A, A) = default;21// CHECK: define{{.*}} @_Zeq1AS_22// CHECK: %[[LHS:.+]] = alloca %struct.A, align 423// CHECK: %[[RHS:.+]] = alloca %struct.A, align 424// CHECK: %[[LHS_LOAD:.+]] = load i8, ptr %[[LHS]], align 425// CHECK: %[[LHS_CLEAR:.+]] = and i8 %[[LHS_LOAD]], 126// CHECK: %[[LHS_CAST:.+]] = zext i8 %[[LHS_CLEAR]] to i3227 28// CHECK: %[[RHS_LOAD:.+]] = load i8, ptr %[[RHS]]29// CHECK: %[[RHS_CLEAR:.+]] = and i8 %[[RHS_LOAD]], 130// CHECK: %[[RHS_CAST:.+]] = zext i8 %[[RHS_CLEAR]] to i3231// CHECK: %[[CMP:.*]] = icmp eq i32 %[[LHS_CAST]], %[[RHS_CAST]]32// CHECK: ret i1 %[[CMP]]33 34bool operator==(B, B) = default;35// CHECK: define{{.*}} @_Zeq1BS_36// CHECK: %[[LHS_B:.+]] = alloca %struct.B, align 437// CHECK: %[[RHS_B:.+]] = alloca %struct.B, align 438// CHECK: %[[LHS_LOAD_B:.+]] = load i32, ptr %[[LHS_B]], align 439// CHECK: %[[LHS_CLEAR_B:.+]] = and i32 %[[LHS_LOAD_B]], 140 41// CHECK: %[[RHS_LOAD_B:.+]] = load i32, ptr %[[RHS_B]]42// CHECK: %[[RHS_CLEAR_B:.+]] = and i32 %[[RHS_LOAD_B]], 143// CHECK: %[[CMP_B:.*]] = icmp eq i32 %[[LHS_CLEAR_B]], %[[RHS_CLEAR_B]]44// CHECK: ret i1 %[[CMP_B]]45