71 lines · c
1// RUN: %clang_cc1 %s -triple arm64e-apple-ios13 -fptrauth-calls -fptrauth-intrinsics -emit-llvm -o- -fptrauth-function-pointer-type-discrimination | FileCheck -check-prefixes CHECK,TYPE %s2// RUN: %clang_cc1 %s -triple aarch64-linux-gnu -fptrauth-calls -fptrauth-intrinsics -emit-llvm -o- -fptrauth-function-pointer-type-discrimination | FileCheck -check-prefixes CHECK,TYPE %s3// RUN: %clang_cc1 %s -triple arm64e-apple-ios13 -fptrauth-calls -fptrauth-intrinsics -emit-llvm -o- | FileCheck -check-prefixes CHECK,ZERO %s4// RUN: %clang_cc1 %s -triple aarch64-linux-gnu -fptrauth-calls -fptrauth-intrinsics -emit-llvm -o- | FileCheck -check-prefixes CHECK,ZERO %s5 6typedef void (*fptr_t)(void);7 8char *cptr;9void (*fptr)(void);10 11// CHECK-LABEL: define{{.*}} void @test112void test1() {13 // TYPE: [[LOAD:%.*]] = load ptr, ptr @cptr14 // TYPE: [[TOINT:%.*]] = ptrtoint ptr [[LOAD]] to i6415 // TYPE: call i64 @llvm.ptrauth.resign(i64 [[TOINT]], i32 0, i64 0, i32 0, i64 18983)16 // TYPE: call void {{.*}}() [ "ptrauth"(i32 0, i64 18983) ]17 // ZERO-NOT: @llvm.ptrauth.resign18 19 (*(fptr_t)cptr)();20}21 22// CHECK-LABEL: define{{.*}} i8 @test223char test2() {24 return *(char *)fptr;25 26 // TYPE: [[LOAD:%.*]] = load ptr, ptr @fptr27 // TYPE: [[CMP:%.*]] = icmp ne ptr [[LOAD]], null28 // TYPE-NEXT: br i1 [[CMP]], label %[[NONNULL:.*]], label %[[CONT:.*]]29 30 // TYPE: [[NONNULL]]:31 // TYPE: [[TOINT:%.*]] = ptrtoint ptr [[LOAD]] to i6432 // TYPE: [[CALL:%.*]] = call i64 @llvm.ptrauth.resign(i64 [[TOINT]], i32 0, i64 18983, i32 0, i64 0)33 // TYPE: [[TOPTR:%.*]] = inttoptr i64 [[CALL]] to ptr34 35 // TYPE: [[CONT]]:36 // TYPE: phi ptr [ null, {{.*}} ], [ [[TOPTR]], %[[NONNULL]] ]37 // ZERO-NOT: @llvm.ptrauth.resign38}39 40// CHECK-LABEL: define{{.*}} void @test441void test4() {42 (*((fptr_t)(&*((char *)(&*(fptr_t)cptr)))))();43 44 // CHECK: [[LOAD:%.*]] = load ptr, ptr @cptr45 // TYPE-NEXT: [[CAST4:%.*]] = ptrtoint ptr [[LOAD]] to i6446 // TYPE-NEXT: [[RESIGN:%.*]] = call i64 @llvm.ptrauth.resign(i64 [[CAST4]], i32 0, i64 0, i32 0, i64 18983)47 // TYPE-NEXT: [[CAST5:%.*]] = inttoptr i64 [[RESIGN]] to ptr48 // TYPE-NEXT: call void [[CAST5]]() [ "ptrauth"(i32 0, i64 18983) ]49 // ZERO-NOT: @llvm.ptrauth.resign50 // ZERO: call void [[LOAD]]() [ "ptrauth"(i32 0, i64 0) ]51}52 53void *vptr;54// CHECK-LABEL: define{{.*}} void @test555void test5() {56 vptr = &*(char *)fptr;57 58 // TYPE: [[LOAD:%.*]] = load ptr, ptr @fptr59 // TYPE-NEXT: [[CMP]] = icmp ne ptr [[LOAD]], null60 // TYPE-NEXT: br i1 [[CMP]], label %[[NONNULL:.*]], label %[[CONT:.*]]61 62 // TYPE: [[NONNULL]]:63 // TYPE: [[RESIGN:%.*]] = call i64 @llvm.ptrauth.resign(i64 {{.*}}, i32 0, i64 18983, i32 0, i64 0)64 // TYPE: [[CAST:%.*]] = inttoptr i64 [[RESIGN]] to ptr65 66 // TYPE: [[CONT]]:67 // TYPE: [[PHI:%.*]] = phi ptr [ null, {{.*}} ], [ [[CAST]], %[[NONNULL]] ]68 // TYPE: store ptr [[PHI]], ptr @vptr69 // ZERO-NOT: @llvm.ptrauth.resign70}71