1 // RUN: %clang_cc1 -std=c++20 %s -triple x86_64-linux -emit-llvm -o - | FileCheck %s 2 3 // GH61417 4 // Check that we don't attempt to compare the unnamed bitfields 5 struct A { 6 unsigned x : 1; 7 unsigned : 1; 8 9 friend bool operator==(A, A); 10 }; 11 12 13 struct B { 14 unsigned x : 1; 15 unsigned : 31; 16 17 friend bool operator==(B, B); 18 }; 19 20 bool operator==(A, A) = default; 21 // CHECK: define{{.*}} @_Zeq1AS_ 22 // CHECK: %[[LHS:.+]] = alloca %struct.A, align 4 23 // CHECK: %[[RHS:.+]] = alloca %struct.A, align 4 24 // CHECK: %[[LHS_LOAD:.+]] = load i8, ptr %[[LHS]], align 4 25 // CHECK: %[[LHS_CLEAR:.+]] = and i8 %[[LHS_LOAD]], 1 26 // CHECK: %[[LHS_CAST:.+]] = zext i8 %[[LHS_CLEAR]] to i32 27 28 // CHECK: %[[RHS_LOAD:.+]] = load i8, ptr %[[RHS]] 29 // CHECK: %[[RHS_CLEAR:.+]] = and i8 %[[RHS_LOAD]], 1 30 // CHECK: %[[RHS_CAST:.+]] = zext i8 %[[RHS_CLEAR]] to i32 31 // CHECK: %[[CMP:.*]] = icmp eq i32 %[[LHS_CAST]], %[[RHS_CAST]] 32 // CHECK: ret i1 %[[CMP]] 33 34 bool operator==(B, B) = default; 35 // CHECK: define{{.*}} @_Zeq1BS_ 36 // CHECK: %[[LHS_B:.+]] = alloca %struct.B, align 4 37 // CHECK: %[[RHS_B:.+]] = alloca %struct.B, align 4 38 // CHECK: %[[LHS_LOAD_B:.+]] = load i32, ptr %[[LHS_B]], align 4 39 // CHECK: %[[LHS_CLEAR_B:.+]] = and i32 %[[LHS_LOAD_B]], 1 40 41 // CHECK: %[[RHS_LOAD_B:.+]] = load i32, ptr %[[RHS_B]] 42 // CHECK: %[[RHS_CLEAR_B:.+]] = and i32 %[[RHS_LOAD_B]], 1 43 // CHECK: %[[CMP_B:.*]] = icmp eq i32 %[[LHS_CLEAR_B]], %[[RHS_CLEAR_B]] 44 // CHECK: ret i1 %[[CMP_B]] 45