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Let llvm.objectsize be conservative with null pointers 

D28494 adds another parameter to @llvm.objectsize. Clang needs to be
sure to pass that third arg whenever applicable.

llvm-svn: 298431
This commit is contained in:
George Burgess IV 2017-03-21 20:09:35 +00:00
parent 56c7e88c2c
commit a63f91574f
7 changed files with 75 additions and 71 deletions
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9
clang/lib/CodeGen/CGBuiltin.cpp
View File

@ -470,10 +470,13 @@ CodeGenFunction::emitBuiltinObjectSize(const Expr *E, unsigned Type,
assert(Ptr->getType()->isPointerTy() &&
"Non-pointer passed to __builtin_object_size?");
// LLVM only supports 0 and 2, make sure that we pass along that as a boolean.
auto *CI = ConstantInt::get(Builder.getInt1Ty(), (Type & 2) >> 1);
Value *F = CGM.getIntrinsic(Intrinsic::objectsize, {ResType, Ptr->getType()});
return Builder.CreateCall(F, {Ptr, CI});
// LLVM only supports 0 and 2, make sure that we pass along that as a boolean.
Value *Min = Builder.getInt1((Type & 2) != 0);
// For GCC compatability, __builtin_object_size treat NULL as unknown size.
Value *NullIsUnknown = Builder.getTrue();
return Builder.CreateCall(F, {Ptr, Min, NullIsUnknown});
}
// Many of MSVC builtins are on both x64 and ARM; to avoid repeating code, we

7
clang/lib/CodeGen/CGExpr.cpp
View File

@ -581,10 +581,11 @@ void CodeGenFunction::EmitTypeCheck(TypeCheckKind TCK, SourceLocation Loc,
llvm::Type *Tys[2] = { IntPtrTy, Int8PtrTy };
llvm::Value *F = CGM.getIntrinsic(llvm::Intrinsic::objectsize, Tys);
llvm::Value *Min = Builder.getFalse();
llvm::Value *NullIsUnknown = Builder.getFalse();
llvm::Value *CastAddr = Builder.CreateBitCast(Ptr, Int8PtrTy);
llvm::Value *LargeEnough =
Builder.CreateICmpUGE(Builder.CreateCall(F, {CastAddr, Min}),
llvm::ConstantInt::get(IntPtrTy, Size));
llvm::Value *LargeEnough = Builder.CreateICmpUGE(
Builder.CreateCall(F, {CastAddr, Min, NullIsUnknown}),
llvm::ConstantInt::get(IntPtrTy, Size));
Checks.push_back(std::make_pair(LargeEnough, SanitizerKind::ObjectSize));
}

2
clang/test/CodeGen/alloc-size.c
View File

@ -231,7 +231,7 @@ void test7() {
void test8() {
// Non-const pointers aren't currently supported.
void *buf = my_calloc(100, 5);
// CHECK: @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(buf, 0);
// CHECK: @llvm.objectsize
gi = __builtin_object_size(buf, 1);

2
clang/test/CodeGen/catch-undef-behavior.c
View File

@ -35,7 +35,7 @@ void foo() {
union { int i; } u;
// CHECK-COMMON: %[[I8PTR:.*]] = bitcast i32* %[[PTR:.*]] to i8*
// CHECK-COMMON-NEXT: %[[SIZE:.*]] = call i64 @llvm.objectsize.i64.p0i8(i8* %[[I8PTR]], i1 false)
// CHECK-COMMON-NEXT: %[[SIZE:.*]] = call i64 @llvm.objectsize.i64.p0i8(i8* %[[I8PTR]], i1 false, i1 false)
// CHECK-COMMON-NEXT: %[[CHECK0:.*]] = icmp uge i64 %[[SIZE]], 4
// CHECK-COMMON: %[[PTRTOINT:.*]] = ptrtoint {{.*}}* %[[PTR]] to i64

110
clang/test/CodeGen/object-size.c
View File

@ -40,7 +40,7 @@ void test4() {
// CHECK-LABEL: define void @test5
void test5() {
// CHECK: = load i8*, i8** @gp
// CHECK-NEXT:= call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK-NEXT:= call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
strcpy(gp, "Hi there");
}
@ -254,31 +254,31 @@ struct Test23Ty { int a; int t[10]; };
// CHECK-LABEL: @test23
void test23(struct Test23Ty *p) {
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(p, 0);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(p, 1);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true, i1 true)
gi = __builtin_object_size(p, 2);
// Note: this is currently fixed at 0 because LLVM doesn't have sufficient
// data to correctly handle type=3
// CHECK: store i32 0
gi = __builtin_object_size(p, 3);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(&p->a, 0);
// CHECK: store i32 4
gi = __builtin_object_size(&p->a, 1);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true, i1 true)
gi = __builtin_object_size(&p->a, 2);
// CHECK: store i32 4
gi = __builtin_object_size(&p->a, 3);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(&p->t[5], 0);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(&p->t[5], 1);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true, i1 true)
gi = __builtin_object_size(&p->t[5], 2);
// CHECK: store i32 20
gi = __builtin_object_size(&p->t[5], 3);
@ -287,11 +287,11 @@ void test23(struct Test23Ty *p) {
// PR24493 -- ICE if __builtin_object_size called with NULL and (Type & 1) != 0
// CHECK-LABEL: @test24
void test24() {
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 false, i1 true)
gi = __builtin_object_size((void*)0, 0);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 false, i1 true)
gi = __builtin_object_size((void*)0, 1);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 true)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 true, i1 true)
gi = __builtin_object_size((void*)0, 2);
// Note: Currently fixed at zero because LLVM can't handle type=3 correctly.
// Hopefully will be lowered properly in the future.
@ -301,22 +301,22 @@ void test24() {
// CHECK-LABEL: @test25
void test25() {
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 false, i1 true)
gi = __builtin_object_size((void*)0x1000, 0);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 false, i1 true)
gi = __builtin_object_size((void*)0x1000, 1);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 true)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 true, i1 true)
gi = __builtin_object_size((void*)0x1000, 2);
// Note: Currently fixed at zero because LLVM can't handle type=3 correctly.
// Hopefully will be lowered properly in the future.
// CHECK: store i32 0
gi = __builtin_object_size((void*)0x1000, 3);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 false, i1 true)
gi = __builtin_object_size((void*)0 + 0x1000, 0);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 false, i1 true)
gi = __builtin_object_size((void*)0 + 0x1000, 1);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 true)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 true, i1 true)
gi = __builtin_object_size((void*)0 + 0x1000, 2);
// Note: Currently fixed at zero because LLVM can't handle type=3 correctly.
// Hopefully will be lowered properly in the future.
@ -342,22 +342,22 @@ struct Test27IncompleteTy;
// CHECK-LABEL: @test27
void test27(struct Test27IncompleteTy *t) {
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(t, 0);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(t, 1);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true, i1 true)
gi = __builtin_object_size(t, 2);
// Note: this is currently fixed at 0 because LLVM doesn't have sufficient
// data to correctly handle type=3
// CHECK: store i32 0
gi = __builtin_object_size(t, 3);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 false, i1 true)
gi = __builtin_object_size(&test27, 0);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 false, i1 true)
gi = __builtin_object_size(&test27, 1);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 true)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 true, i1 true)
gi = __builtin_object_size(&test27, 2);
// Note: this is currently fixed at 0 because LLVM doesn't have sufficient
// data to correctly handle type=3
@ -415,38 +415,38 @@ struct StaticStruct {
// CHECK-LABEL: @test29
void test29(struct DynStructVar *dv, struct DynStruct0 *d0,
struct DynStruct1 *d1, struct StaticStruct *ss) {
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(dv->snd, 0);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(dv->snd, 1);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true, i1 true)
gi = __builtin_object_size(dv->snd, 2);
// CHECK: store i32 0
gi = __builtin_object_size(dv->snd, 3);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(d0->snd, 0);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(d0->snd, 1);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true, i1 true)
gi = __builtin_object_size(d0->snd, 2);
// CHECK: store i32 0
gi = __builtin_object_size(d0->snd, 3);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(d1->snd, 0);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(d1->snd, 1);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true, i1 true)
gi = __builtin_object_size(d1->snd, 2);
// CHECK: store i32 1
gi = __builtin_object_size(d1->snd, 3);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(ss->snd, 0);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(ss->snd, 1);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true, i1 true)
gi = __builtin_object_size(ss->snd, 2);
// CHECK: store i32 2
gi = __builtin_object_size(ss->snd, 3);
@ -456,39 +456,39 @@ void test29(struct DynStructVar *dv, struct DynStruct0 *d0,
void test30() {
struct { struct DynStruct1 fst, snd; } *nested;
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(nested->fst.snd, 0);
// CHECK: store i32 1
gi = __builtin_object_size(nested->fst.snd, 1);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true, i1 true)
gi = __builtin_object_size(nested->fst.snd, 2);
// CHECK: store i32 1
gi = __builtin_object_size(nested->fst.snd, 3);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(nested->snd.snd, 0);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(nested->snd.snd, 1);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true, i1 true)
gi = __builtin_object_size(nested->snd.snd, 2);
// CHECK: store i32 1
gi = __builtin_object_size(nested->snd.snd, 3);
union { struct DynStruct1 d1; char c[1]; } *u;
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(u->c, 0);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(u->c, 1);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true, i1 true)
gi = __builtin_object_size(u->c, 2);
// CHECK: store i32 1
gi = __builtin_object_size(u->c, 3);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(u->d1.snd, 0);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(u->d1.snd, 1);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true, i1 true)
gi = __builtin_object_size(u->d1.snd, 2);
// CHECK: store i32 1
gi = __builtin_object_size(u->d1.snd, 3);
@ -502,19 +502,19 @@ void test31() {
struct DynStruct1 *ds1;
struct StaticStruct *ss;
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(ds1[9].snd, 1);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(&ss[9].snd[0], 1);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(&ds1[9].snd[0], 1);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(&ds0[9].snd[0], 1);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(&dsv[9].snd[0], 1);
}
@ -527,11 +527,11 @@ void PR30346() {
};
struct sockaddr *sa;
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(sa->sa_data, 0);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(sa->sa_data, 1);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true, i1 true)
gi = __builtin_object_size(sa->sa_data, 2);
// CHECK: store i32 14
gi = __builtin_object_size(sa->sa_data, 3);

14
clang/test/CodeGen/object-size.cpp
View File

@ -35,29 +35,29 @@ void test2() {
struct B : A {};
struct C { int i; B bs[1]; } *c;
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(&c->bs[0], 0);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(&c->bs[0], 1);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true, i1 true)
gi = __builtin_object_size(&c->bs[0], 2);
// CHECK: store i32 16
gi = __builtin_object_size(&c->bs[0], 3);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size((A*)&c->bs[0], 0);
// CHECK: store i32 16
gi = __builtin_object_size((A*)&c->bs[0], 1);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true, i1 true)
gi = __builtin_object_size((A*)&c->bs[0], 2);
// CHECK: store i32 16
gi = __builtin_object_size((A*)&c->bs[0], 3);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true)
gi = __builtin_object_size(&c->bs[0].buf[0], 0);
// CHECK: store i32 16
gi = __builtin_object_size(&c->bs[0].buf[0], 1);
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true)
// CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true, i1 true)
gi = __builtin_object_size(&c->bs[0].buf[0], 2);
// CHECK: store i32 16
gi = __builtin_object_size(&c->bs[0].buf[0], 3);

2
clang/test/CodeGen/sanitize-recover.c
View File

@ -19,7 +19,7 @@ void test() {
void foo() {
union { int i; } u;
u.i=1;
// PARTIAL: %[[SIZE:.*]] = call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 false)
// PARTIAL: %[[SIZE:.*]] = call i64 @llvm.objectsize.i64.p0i8(i8* {{.*}}, i1 false, i1 false)
// PARTIAL-NEXT: %[[CHECK0:.*]] = icmp uge i64 %[[SIZE]], 4
// PARTIAL: %[[MISALIGN:.*]] = and i64 {{.*}}, 3