diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index 005c824024f9..817589064a3e 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -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
diff --git a/clang/lib/CodeGen/CGExpr.cpp b/clang/lib/CodeGen/CGExpr.cpp
index 1118bfadc947..1a95eb10451e 100644
--- a/clang/lib/CodeGen/CGExpr.cpp
+++ b/clang/lib/CodeGen/CGExpr.cpp
@@ -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));
   }
 
diff --git a/clang/test/CodeGen/alloc-size.c b/clang/test/CodeGen/alloc-size.c
index 1e503f0579c9..1c98b6874da2 100644
--- a/clang/test/CodeGen/alloc-size.c
+++ b/clang/test/CodeGen/alloc-size.c
@@ -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);
diff --git a/clang/test/CodeGen/catch-undef-behavior.c b/clang/test/CodeGen/catch-undef-behavior.c
index d3fc17620c80..c5f3a79429a0 100644
--- a/clang/test/CodeGen/catch-undef-behavior.c
+++ b/clang/test/CodeGen/catch-undef-behavior.c
@@ -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
diff --git a/clang/test/CodeGen/object-size.c b/clang/test/CodeGen/object-size.c
index a824f554b5f4..a1095798c16b 100644
--- a/clang/test/CodeGen/object-size.c
+++ b/clang/test/CodeGen/object-size.c
@@ -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);
diff --git a/clang/test/CodeGen/object-size.cpp b/clang/test/CodeGen/object-size.cpp
index 81b44a55a4e3..725c49214dd5 100644
--- a/clang/test/CodeGen/object-size.cpp
+++ b/clang/test/CodeGen/object-size.cpp
@@ -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);
diff --git a/clang/test/CodeGen/sanitize-recover.c b/clang/test/CodeGen/sanitize-recover.c
index 6cf7af84ba81..99eff8518ce8 100644
--- a/clang/test/CodeGen/sanitize-recover.c
+++ b/clang/test/CodeGen/sanitize-recover.c
@@ -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