diff --git a/clang/test/CodeGenCXX/virtual-function-elimination.cpp b/clang/test/CodeGenCXX/virtual-function-elimination.cpp --- a/clang/test/CodeGenCXX/virtual-function-elimination.cpp +++ b/clang/test/CodeGenCXX/virtual-function-elimination.cpp @@ -1,5 +1,5 @@ // RUN: %clang_cc1 -triple x86_64-unknown-linux -flto -flto-unit -fvirtual-function-elimination -fwhole-program-vtables -emit-llvm -o - %s | FileCheck %s - +// RUN: %clang -target x86_64-unknown-linux -flto -fvirtual-function-elimination -fno-virtual-function-elimination -fwhole-program-vtables -S -emit-llvm -o - %s | FileCheck %s -check-prefix=NOVFE struct __attribute__((visibility("default"))) A { virtual void foo(); @@ -8,9 +8,13 @@ void test_1(A *p) { // A has default visibility, so no need for type.checked.load. // CHECK-LABEL: define void @_Z6test_1P1A +// NOVFE-LABEL: define dso_local void @_Z6test_1P1A // CHECK: [[FN_PTR_ADDR:%.+]] = getelementptr inbounds void (%struct.A*)*, void (%struct.A*)** {{%.+}}, i64 0 +// NOVFE: [[FN_PTR_ADDR:%.+]] = getelementptr inbounds void (%struct.A*)*, void (%struct.A*)** {{%.+}}, i64 0 // CHECK: [[FN_PTR:%.+]] = load void (%struct.A*)*, void (%struct.A*)** [[FN_PTR_ADDR]] +// NOVFE: [[FN_PTR:%.+]] = load void (%struct.A*)*, void (%struct.A*)** [[FN_PTR_ADDR]] // CHECK: call void [[FN_PTR]]( +// NOVFE: call void [[FN_PTR]]( p->foo(); } @@ -22,9 +26,13 @@ void test_2(B *p) { // B has public LTO visibility, so no need for type.checked.load. // CHECK-LABEL: define void @_Z6test_2P1B +// NOVFE-LABEL: define dso_local void @_Z6test_2P1B // CHECK: [[FN_PTR_ADDR:%.+]] = getelementptr inbounds void (%struct.B*)*, void (%struct.B*)** {{%.+}}, i64 0 +// NOVFE: [[FN_PTR_ADDR:%.+]] = getelementptr inbounds void (%struct.B*)*, void (%struct.B*)** {{%.+}}, i64 0 // CHECK: [[FN_PTR:%.+]] = load void (%struct.B*)*, void (%struct.B*)** [[FN_PTR_ADDR]] +// NOVFE: [[FN_PTR:%.+]] = load void (%struct.B*)*, void (%struct.B*)** [[FN_PTR_ADDR]] // CHECK: call void [[FN_PTR]]( +// NOVFE: call void [[FN_PTR]]( p->foo(); } @@ -37,10 +45,14 @@ void test_3(C *p) { // C has hidden visibility, so we generate type.checked.load to allow VFE. // CHECK-LABEL: define void @_Z6test_3P1C +// NOVFE-LABEL: define dso_local void @_Z6test_3P1C // CHECK: [[LOAD:%.+]] = call { i8*, i1 } @llvm.type.checked.load(i8* {{%.+}}, i32 0, metadata !"_ZTS1C") +// NOVFE: call i1 @llvm.type.test(i8* {{%.+}}, metadata !"_ZTS1C") // CHECK: [[FN_PTR_I8:%.+]] = extractvalue { i8*, i1 } [[LOAD]], 0 +// NOVFE: [[FN_PTR:%.+]] = load void (%struct.C*)*, void (%struct.C*)** {{%.+}}, align 8 // CHECK: [[FN_PTR:%.+]] = bitcast i8* [[FN_PTR_I8]] to void (%struct.C*)* // CHECK: call void [[FN_PTR]]( +// NOVFE: call void [[FN_PTR]]( p->foo(); } @@ -48,10 +60,14 @@ // When using type.checked.load, we pass the vtable offset to the intrinsic, // rather than adding it to the pointer with a GEP. // CHECK-LABEL: define void @_Z6test_4P1C +// NOVFE-LABEL: define dso_local void @_Z6test_4P1C // CHECK: [[LOAD:%.+]] = call { i8*, i1 } @llvm.type.checked.load(i8* {{%.+}}, i32 8, metadata !"_ZTS1C") +// NOVFE: call i1 @llvm.type.test(i8* {{%.+}}, metadata !"_ZTS1C") // CHECK: [[FN_PTR_I8:%.+]] = extractvalue { i8*, i1 } [[LOAD]], 0 +// NOVFE: [[FN_PTR:%.+]] = load void (%struct.C*)*, void (%struct.C*)** {{%.+}}, align 8 // CHECK: [[FN_PTR:%.+]] = bitcast i8* [[FN_PTR_I8]] to void (%struct.C*)* // CHECK: call void [[FN_PTR]]( +// NOVFE: call void [[FN_PTR]]( p->bar(); } @@ -64,12 +80,17 @@ // function pointer to the intrinsic, this information would be lost. No // codegen changes on the non-virtual side. // CHECK-LABEL: define void @_Z6test_5P1CMS_FvvE( +// NOVFE-LABEL: define dso_local void @_Z6test_5P1CMS_FvvE( // CHECK: [[FN_PTR_ADDR:%.+]] = getelementptr i8, i8* %vtable, i64 {{%.+}} // CHECK: [[LOAD:%.+]] = call { i8*, i1 } @llvm.type.checked.load(i8* [[FN_PTR_ADDR]], i32 0, metadata !"_ZTSM1CFvvE.virtual") +// NOVFE-NOT: call { i8*, i1 } @llvm.type.checked.load(i8* {{%.+}}, i32 0, metadata !"_ZTSM1CFvvE.virtual") // CHECK: [[FN_PTR_I8:%.+]] = extractvalue { i8*, i1 } [[LOAD]], 0 // CHECK: [[FN_PTR:%.+]] = bitcast i8* [[FN_PTR_I8]] to void (%struct.C*)* +// NOVFE: [[FN_PTR:%.+]] = load void (%struct.C*)*, void (%struct.C*)** {{%.+}}, align 8 // CHECK: [[PHI:%.+]] = phi void (%struct.C*)* {{.*}}[ [[FN_PTR]], {{.*}} ] +// NOVFE: [[PHI:%.+]] = phi void (%struct.C*)* {{.*}}[ [[FN_PTR]], {{.*}} ] // CHECK: call void [[PHI]]( +// NOVFE: call void [[PHI]]( (p->*q)(); }