64 lines · c
1// RUN: %clang_cc1 %s -std=c2x -emit-llvm -o - | FileCheck %s2 3// Test that null <-> nullptr_t conversions work as expected.4typedef typeof(nullptr) nullptr_t;5 6nullptr_t nullptr_t_val;7 8void bool_func(bool);9void nullptr_func(nullptr_t);10 11void test() {12 // Test initialization13 bool bool_from_nullptr_t = nullptr_t_val;14 nullptr_t nullptr_t_from_nullptr = nullptr;15 void *vp_from_nullptr_t = nullptr_t_val;16 nullptr_t nullptr_t_from_vp = (void *)0;17 nullptr_t nullptr_t_from_int = 0;18 19 // Test assignment20 bool_from_nullptr_t = nullptr_t_val;21 nullptr_t_from_nullptr = nullptr;22 vp_from_nullptr_t = nullptr_t_val;23 nullptr_t_from_vp = (void *)0;24 nullptr_t_from_int = 0;25 26 // Test calls27 bool_func(nullptr_t_from_nullptr);28 nullptr_func(nullptr_t_from_nullptr);29 nullptr_func(0);30 nullptr_func((void *)0);31 nullptr_func(nullptr);32 nullptr_func(false);33 34 // Allocation of locals35 // CHECK: %[[bool_from_nullptr_t:.*]] = alloca i836 // CHECK: %[[nullptr_t_from_nullptr:.*]] = alloca ptr37 // CHECK: %[[vp_from_nullptr_t:.*]] = alloca ptr38 // CHECK: %[[nullptr_t_from_vp:.*]] = alloca ptr39 // CHECK: %[[nullptr_t_from_int:.*]] = alloca ptr40 41 // Initialization of locals42 // CHECK: store i8 0, ptr %[[bool_from_nullptr_t]]43 // CHECK: store ptr null, ptr %[[nullptr_t_from_nullptr]]44 // CHECK: store ptr null, ptr %[[vp_from_nullptr_t]]45 // CHECK: store ptr null, ptr %[[nullptr_t_from_vp]]46 // CHECK: store ptr null, ptr %[[nullptr_t_from_int]]47 48 // Assignment expressions49 // CHECK: store i8 0, ptr %[[bool_from_nullptr_t]]50 // CHECK: store ptr null, ptr %[[nullptr_t_from_nullptr]]51 // CHECK: store ptr null, ptr %[[vp_from_nullptr_t]]52 // CHECK: store ptr null, ptr %[[nullptr_t_from_vp]]53 // CHECK: store ptr null, ptr %[[nullptr_t_from_int]]54 55 // Calls56 // CHECK: call void @bool_func(i1 noundef {{(zeroext )?}}false)57 // CHECK: call void @nullptr_func(ptr null)58 // CHECK: call void @nullptr_func(ptr null)59 // CHECK: call void @nullptr_func(ptr null)60 // CHECK: call void @nullptr_func(ptr null)61 // CHECK: call void @nullptr_func(ptr null)62}63 64