clang/test/CodeGenCXX/cfi-mfcall-nomerge.cpp

// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --include-generated-funcs --version 5
// with MERGE/NO-MERGE assertions added manually.

// N.B. although the clang driver defaults to merge, clang_cc1 defaults to non-merge.
// (This is similar to -fsanitize-recover, for which the default is also applied
// at the driver level only.)

// If optimization is disabled, merging is disabled (overrides -fsanitize-merge).

// RUN: %clang_cc1 -O3 -triple x86_64-unknown-linux                             -fsanitize=cfi-mfcall -fsanitize-trap=cfi-mfcall -fvisibility=hidden -emit-llvm -o - %s | FileCheck %s --check-prefixes=NO-MERGE
// RUN: %clang_cc1 -O3 -triple x86_64-unknown-linux -fsanitize-merge=cfi-mfcall -fsanitize=cfi-mfcall -fsanitize-trap=cfi-mfcall -fvisibility=hidden -emit-llvm -o - %s | FileCheck %s --check-prefixes=MERGE

struct B1 {};
struct B2 {};
struct B3 : B2 {};
struct S : B1, B3 {};

void f(S *s, void (S::*p)()) {
  (s->*p)();
  (s->*p)();
  (s->*p)();
}

// NO-MERGE-LABEL: define hidden void @_Z1fP1SMS_FvvE(
// NO-MERGE-SAME: ptr noundef [[S:%.*]], i64 [[P_COERCE0:%.*]], i64 [[P_COERCE1:%.*]]) local_unnamed_addr #[[ATTR0:[0-9]+]] {
// NO-MERGE-NEXT:  [[ENTRY:.*:]]
// NO-MERGE-NEXT:    [[TMP0:%.*]] = getelementptr inbounds i8, ptr [[S]], i64 [[P_COERCE1]]
// NO-MERGE-NEXT:    [[TMP1:%.*]] = and i64 [[P_COERCE0]], 1
// NO-MERGE-NEXT:    [[MEMPTR_ISVIRTUAL_NOT:%.*]] = icmp eq i64 [[TMP1]], 0
// NO-MERGE-NEXT:    br i1 [[MEMPTR_ISVIRTUAL_NOT]], label %[[MEMPTR_NONVIRTUAL:.*]], label %[[MEMPTR_VIRTUAL:.*]]
// NO-MERGE:       [[MEMPTR_VIRTUAL]]:
// NO-MERGE-NEXT:    [[VTABLE:%.*]] = load ptr, ptr [[TMP0]], align 8, !tbaa [[TBAA2:![0-9]+]]
// NO-MERGE-NEXT:    [[TMP2:%.*]] = getelementptr i8, ptr [[VTABLE]], i64 [[P_COERCE0]]
// NO-MERGE-NEXT:    [[TMP3:%.*]] = getelementptr i8, ptr [[TMP2]], i64 -1
// NO-MERGE-NEXT:    [[TMP4:%.*]] = tail call i1 @llvm.type.test(ptr [[TMP3]], metadata !"_ZTSM1SFvvE.virtual"), !nosanitize [[META5:![0-9]+]]
// NO-MERGE-NEXT:    br i1 [[TMP4]], label %[[MEMPTR_VIRTUAL7:.*]], label %[[TRAP:.*]], !prof [[PROF6:![0-9]+]], !nosanitize [[META5]]
// NO-MERGE:       [[TRAP]]:
// NO-MERGE-NEXT:    tail call void @llvm.ubsantrap(i8 2) #[[ATTR3:[0-9]+]], !nosanitize [[META5]]
// NO-MERGE-NEXT:    unreachable, !nosanitize [[META5]]
// NO-MERGE:       [[MEMPTR_NONVIRTUAL]]:
// NO-MERGE-NEXT:    [[MEMPTR_NONVIRTUALFN:%.*]] = inttoptr i64 [[P_COERCE0]] to ptr
// NO-MERGE-NEXT:    [[TMP5:%.*]] = tail call i1 @llvm.type.test(ptr [[MEMPTR_NONVIRTUALFN]], metadata !"_ZTSM2B1FvvE")
// NO-MERGE-NEXT:    [[TMP6:%.*]] = tail call i1 @llvm.type.test(ptr [[MEMPTR_NONVIRTUALFN]], metadata !"_ZTSM2B2FvvE")
// NO-MERGE-NEXT:    [[TMP7:%.*]] = or i1 [[TMP5]], [[TMP6]], !nosanitize [[META5]]
// NO-MERGE-NEXT:    br i1 [[TMP7]], label %[[MEMPTR_NONVIRTUAL23:.*]], label %[[TRAP2:.*]], !prof [[PROF6]], !nosanitize [[META5]]
// NO-MERGE:       [[TRAP2]]:
// NO-MERGE-NEXT:    tail call void @llvm.ubsantrap(i8 2) #[[ATTR4:[0-9]+]], !nosanitize [[META5]]
// NO-MERGE-NEXT:    unreachable, !nosanitize [[META5]]
// NO-MERGE:       [[MEMPTR_VIRTUAL7]]:
// NO-MERGE-NEXT:    [[MEMPTR_VIRTUALFN:%.*]] = load ptr, ptr [[TMP3]], align 8, !nosanitize [[META5]]
// NO-MERGE-NEXT:    tail call void [[MEMPTR_VIRTUALFN]](ptr noundef nonnull align 1 dereferenceable(1) [[TMP0]]) #[[ATTR5:[0-9]+]]
// NO-MERGE-NEXT:    [[VTABLE8:%.*]] = load ptr, ptr [[TMP0]], align 8, !tbaa [[TBAA2]]
// NO-MERGE-NEXT:    [[TMP8:%.*]] = getelementptr i8, ptr [[VTABLE8]], i64 [[P_COERCE0]]
// NO-MERGE-NEXT:    [[TMP9:%.*]] = getelementptr i8, ptr [[TMP8]], i64 -1
// NO-MERGE-NEXT:    [[TMP10:%.*]] = tail call i1 @llvm.type.test(ptr [[TMP9]], metadata !"_ZTSM1SFvvE.virtual"), !nosanitize [[META5]]
// NO-MERGE-NEXT:    br i1 [[TMP10]], label %[[MEMPTR_VIRTUAL19:.*]], label %[[TRAP2]], !prof [[PROF6]], !nosanitize [[META5]]
// NO-MERGE:       [[TRAP13:.*]]:
// NO-MERGE-NEXT:    tail call void @llvm.ubsantrap(i8 2) #[[ATTR4]], !nosanitize [[META5]]
// NO-MERGE-NEXT:    unreachable, !nosanitize [[META5]]
// NO-MERGE:       [[MEMPTR_VIRTUAL19]]:
// NO-MERGE-NEXT:    [[MEMPTR_VIRTUALFN9:%.*]] = load ptr, ptr [[TMP9]], align 8, !nosanitize [[META5]]
// NO-MERGE-NEXT:    tail call void [[MEMPTR_VIRTUALFN9]](ptr noundef nonnull align 1 dereferenceable(1) [[TMP0]]) #[[ATTR5]]
// NO-MERGE-NEXT:    [[VTABLE20:%.*]] = load ptr, ptr [[TMP0]], align 8, !tbaa [[TBAA2]]
// NO-MERGE-NEXT:    [[TMP11:%.*]] = getelementptr i8, ptr [[VTABLE20]], i64 [[P_COERCE0]]
// NO-MERGE-NEXT:    [[TMP12:%.*]] = getelementptr i8, ptr [[TMP11]], i64 -1
// NO-MERGE-NEXT:    [[TMP13:%.*]] = tail call i1 @llvm.type.test(ptr [[TMP12]], metadata !"_ZTSM1SFvvE.virtual"), !nosanitize [[META5]]
// NO-MERGE-NEXT:    [[MEMPTR_VIRTUALFN21:%.*]] = load ptr, ptr [[TMP12]], align 8, !nosanitize [[META5]]
// NO-MERGE-NEXT:    br i1 [[TMP13]], label %[[MEMPTR_END27:.*]], label %[[TRAP13]], !prof [[PROF6]], !nosanitize [[META5]]
// NO-MERGE:       [[MEMPTR_NONVIRTUAL23]]:
// NO-MERGE-NEXT:    tail call void [[MEMPTR_NONVIRTUALFN]](ptr noundef nonnull align 1 dereferenceable(1) [[TMP0]]) #[[ATTR5]]
// NO-MERGE-NEXT:    tail call void [[MEMPTR_NONVIRTUALFN]](ptr noundef nonnull align 1 dereferenceable(1) [[TMP0]]) #[[ATTR5]]
// NO-MERGE-NEXT:    br label %[[MEMPTR_END27]]
// NO-MERGE:       [[MEMPTR_END27]]:
// NO-MERGE-NEXT:    [[TMP14:%.*]] = phi ptr [ [[MEMPTR_VIRTUALFN21]], %[[MEMPTR_VIRTUAL19]] ], [ [[MEMPTR_NONVIRTUALFN]], %[[MEMPTR_NONVIRTUAL23]] ]
// NO-MERGE-NEXT:    tail call void [[TMP14]](ptr noundef nonnull align 1 dereferenceable(1) [[TMP0]]) #[[ATTR5]]
// NO-MERGE-NEXT:    ret void
//
//
// MERGE-LABEL: define hidden void @_Z1fP1SMS_FvvE(
// MERGE-SAME: ptr noundef [[S:%.*]], i64 [[P_COERCE0:%.*]], i64 [[P_COERCE1:%.*]]) local_unnamed_addr #[[ATTR0:[0-9]+]] {
// MERGE-NEXT:  [[ENTRY:.*:]]
// MERGE-NEXT:    [[TMP0:%.*]] = getelementptr inbounds i8, ptr [[S]], i64 [[P_COERCE1]]
// MERGE-NEXT:    [[TMP1:%.*]] = and i64 [[P_COERCE0]], 1
// MERGE-NEXT:    [[MEMPTR_ISVIRTUAL_NOT:%.*]] = icmp eq i64 [[TMP1]], 0
// MERGE-NEXT:    br i1 [[MEMPTR_ISVIRTUAL_NOT]], label %[[MEMPTR_NONVIRTUAL:.*]], label %[[MEMPTR_VIRTUAL:.*]]
// MERGE:       [[MEMPTR_VIRTUAL]]:
// MERGE-NEXT:    [[VTABLE:%.*]] = load ptr, ptr [[TMP0]], align 8, !tbaa [[TBAA2:![0-9]+]]
// MERGE-NEXT:    [[TMP2:%.*]] = getelementptr i8, ptr [[VTABLE]], i64 [[P_COERCE0]]
// MERGE-NEXT:    [[TMP3:%.*]] = getelementptr i8, ptr [[TMP2]], i64 -1
// MERGE-NEXT:    [[TMP4:%.*]] = tail call i1 @llvm.type.test(ptr [[TMP3]], metadata !"_ZTSM1SFvvE.virtual"), !nosanitize [[META5:![0-9]+]]
// MERGE-NEXT:    br i1 [[TMP4]], label %[[MEMPTR_VIRTUAL6:.*]], label %[[TRAP:.*]], !prof [[PROF6:![0-9]+]], !nosanitize [[META5]]
// MERGE:       [[TRAP]]:
// MERGE-NEXT:    tail call void @llvm.ubsantrap(i8 2) #[[ATTR3:[0-9]+]], !nosanitize [[META5]]
// MERGE-NEXT:    unreachable, !nosanitize [[META5]]
// MERGE:       [[MEMPTR_NONVIRTUAL]]:
// MERGE-NEXT:    [[MEMPTR_NONVIRTUALFN:%.*]] = inttoptr i64 [[P_COERCE0]] to ptr
// MERGE-NEXT:    [[TMP5:%.*]] = tail call i1 @llvm.type.test(ptr [[MEMPTR_NONVIRTUALFN]], metadata !"_ZTSM2B1FvvE")
// MERGE-NEXT:    [[TMP6:%.*]] = tail call i1 @llvm.type.test(ptr [[MEMPTR_NONVIRTUALFN]], metadata !"_ZTSM2B2FvvE")
// MERGE-NEXT:    [[TMP7:%.*]] = or i1 [[TMP5]], [[TMP6]], !nosanitize [[META5]]
// MERGE-NEXT:    br i1 [[TMP7]], label %[[MEMPTR_NONVIRTUAL21:.*]], label %[[TRAP]], !prof [[PROF6]], !nosanitize [[META5]]
// MERGE:       [[MEMPTR_VIRTUAL6]]:
// MERGE-NEXT:    [[MEMPTR_VIRTUALFN:%.*]] = load ptr, ptr [[TMP3]], align 8, !nosanitize [[META5]]
// MERGE-NEXT:    tail call void [[MEMPTR_VIRTUALFN]](ptr noundef nonnull align 1 dereferenceable(1) [[TMP0]]) #[[ATTR4:[0-9]+]]
// MERGE-NEXT:    [[VTABLE7:%.*]] = load ptr, ptr [[TMP0]], align 8, !tbaa [[TBAA2]]
// MERGE-NEXT:    [[TMP8:%.*]] = getelementptr i8, ptr [[VTABLE7]], i64 [[P_COERCE0]]
// MERGE-NEXT:    [[TMP9:%.*]] = getelementptr i8, ptr [[TMP8]], i64 -1
// MERGE-NEXT:    [[TMP10:%.*]] = tail call i1 @llvm.type.test(ptr [[TMP9]], metadata !"_ZTSM1SFvvE.virtual"), !nosanitize [[META5]]
// MERGE-NEXT:    br i1 [[TMP10]], label %[[MEMPTR_VIRTUAL17:.*]], label %[[TRAP]], !prof [[PROF6]], !nosanitize [[META5]]
// MERGE:       [[MEMPTR_VIRTUAL17]]:
// MERGE-NEXT:    [[MEMPTR_VIRTUALFN8:%.*]] = load ptr, ptr [[TMP9]], align 8, !nosanitize [[META5]]
// MERGE-NEXT:    tail call void [[MEMPTR_VIRTUALFN8]](ptr noundef nonnull align 1 dereferenceable(1) [[TMP0]]) #[[ATTR4]]
// MERGE-NEXT:    [[VTABLE18:%.*]] = load ptr, ptr [[TMP0]], align 8, !tbaa [[TBAA2]]
// MERGE-NEXT:    [[TMP11:%.*]] = getelementptr i8, ptr [[VTABLE18]], i64 [[P_COERCE0]]
// MERGE-NEXT:    [[TMP12:%.*]] = getelementptr i8, ptr [[TMP11]], i64 -1
// MERGE-NEXT:    [[TMP13:%.*]] = tail call i1 @llvm.type.test(ptr [[TMP12]], metadata !"_ZTSM1SFvvE.virtual"), !nosanitize [[META5]]
// MERGE-NEXT:    [[MEMPTR_VIRTUALFN19:%.*]] = load ptr, ptr [[TMP12]], align 8, !nosanitize [[META5]]
// MERGE-NEXT:    br i1 [[TMP13]], label %[[MEMPTR_END24:.*]], label %[[TRAP]], !prof [[PROF6]], !nosanitize [[META5]]
// MERGE:       [[MEMPTR_NONVIRTUAL21]]:
// MERGE-NEXT:    tail call void [[MEMPTR_NONVIRTUALFN]](ptr noundef nonnull align 1 dereferenceable(1) [[TMP0]]) #[[ATTR4]]
// MERGE-NEXT:    tail call void [[MEMPTR_NONVIRTUALFN]](ptr noundef nonnull align 1 dereferenceable(1) [[TMP0]]) #[[ATTR4]]
// MERGE-NEXT:    br label %[[MEMPTR_END24]]
// MERGE:       [[MEMPTR_END24]]:
// MERGE-NEXT:    [[TMP14:%.*]] = phi ptr [ [[MEMPTR_VIRTUALFN19]], %[[MEMPTR_VIRTUAL17]] ], [ [[MEMPTR_NONVIRTUALFN]], %[[MEMPTR_NONVIRTUAL21]] ]
// MERGE-NEXT:    tail call void [[TMP14]](ptr noundef nonnull align 1 dereferenceable(1) [[TMP0]]) #[[ATTR4]]
// MERGE-NEXT:    ret void

// MERGE: [[ATTR3]] = { noreturn nounwind }
// MERGE: [[ATTR4]] = { nounwind }

// NO-MERGE: [[ATTR4]] = { nomerge noreturn nounwind }
// NO-MERGE: [[ATTR5]] = { nounwind }