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d640d7d96e
This patch refactors microsoft record layout to be more "natural". The most dominant change is that vbptrs and vfptrs are injected after the fact. This simplifies the implementation and the math for the offest for the first base/field after the vbptr. llvm-svn: 198818
203 lines
6.3 KiB
C++
203 lines
6.3 KiB
C++
// RUN: %clang_cc1 -fno-rtti -emit-llvm-only -triple i686-pc-win32 -fdump-record-layouts -fsyntax-only -cxx-abi microsoft %s 2>/dev/null \
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// RUN: | FileCheck %s
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// RUN: %clang_cc1 -fno-rtti -emit-llvm-only -triple x86_64-pc-win32 -fdump-record-layouts -fsyntax-only -cxx-abi microsoft %s 2>/dev/null \
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// RUN: | FileCheck %s -check-prefix CHECK-X64
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extern "C" int printf(const char *fmt, ...);
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__declspec(align(4096)) char buffer[4096];
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struct AT {};
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struct V : AT {
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char c;
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V() {
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printf("V - this: %d\n", (int)((char*)this - buffer));
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}
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};
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struct AT0 {
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union { struct { int a; AT t; } y; int b; } x;
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char c;
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AT0() {
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printf("AT0 - this: %d\n", (int)((char*)this - buffer));
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}
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};
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struct AT1 : V {
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int a;
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AT1() {
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printf("AT1 - this: %d\n", (int)((char*)this - buffer));
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}
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};
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struct AT2 {
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AT0 t;
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char AT2FieldName0;
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AT2() {
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printf("AT2 - this: %d\n", (int)((char*)this - buffer));
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printf("AT2 - Fiel: %d\n", (int)((char*)&AT2FieldName0 - buffer));
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}
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};
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struct AT3 : AT2, AT1 {
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AT3() {
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printf("AT3 - this: %d\n", (int)((char*)this - buffer));
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}
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};
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// CHECK: *** Dumping AST Record Layout
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// CHECK: *** Dumping AST Record Layout
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// CHECK: *** Dumping AST Record Layout
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// CHECK: *** Dumping AST Record Layout
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// CHECK: *** Dumping AST Record Layout
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// CHECK: *** Dumping AST Record Layout
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// CHECK: *** Dumping AST Record Layout
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct AT3
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// CHECK-NEXT: 0 | struct AT2 (base)
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// CHECK-NEXT: 0 | struct AT0 t
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// CHECK-NEXT: 0 | union AT0::<anonymous at {{.*}} x
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// CHECK-NEXT: 0 | struct AT0::<anonymous at {{.*}} y
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// CHECK-NEXT: 0 | int a
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// CHECK-NEXT: 4 | struct AT t (empty)
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// CHECK: 0 | int b
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// CHECK: 8 | char c
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// CHECK: 12 | char AT2FieldName0
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// CHECK-NEXT: 20 | struct AT1 (base)
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// CHECK-NEXT: 20 | struct V (base)
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// CHECK-NEXT: 20 | struct AT (base) (empty)
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// CHECK-NEXT: 20 | char c
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// CHECK-NEXT: 24 | int a
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// CHECK-NEXT: | [sizeof=28, align=4
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// CHECK-NEXT: | nvsize=28, nvalign=4]
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// CHECK-X64: *** Dumping AST Record Layout
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// CHECK-X64: *** Dumping AST Record Layout
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// CHECK-X64: *** Dumping AST Record Layout
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// CHECK-X64: *** Dumping AST Record Layout
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// CHECK-X64: *** Dumping AST Record Layout
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// CHECK-X64: *** Dumping AST Record Layout
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// CHECK-X64: *** Dumping AST Record Layout
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// CHECK-X64: *** Dumping AST Record Layout
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// CHECK-X64-NEXT: 0 | struct AT3
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// CHECK-X64-NEXT: 0 | struct AT2 (base)
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// CHECK-X64-NEXT: 0 | struct AT0 t
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// CHECK-X64-NEXT: 0 | union AT0::<anonymous at {{.*}} x
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// CHECK-X64-NEXT: 0 | struct AT0::<anonymous at {{.*}} y
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// CHECK-X64-NEXT: 0 | int a
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// CHECK-X64-NEXT: 4 | struct AT t (empty)
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// CHECK-X64: 0 | int b
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// CHECK-X64: 8 | char c
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// CHECK-X64: 12 | char AT2FieldName0
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// CHECK-X64-NEXT: 20 | struct AT1 (base)
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// CHECK-X64-NEXT: 20 | struct V (base)
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// CHECK-X64-NEXT: 20 | struct AT (base) (empty)
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// CHECK-X64-NEXT: 20 | char c
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// CHECK-X64-NEXT: 24 | int a
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// CHECK-X64-NEXT: | [sizeof=28, align=4
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// CHECK-X64-NEXT: | nvsize=28, nvalign=4]
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struct BT0 {
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BT0() {
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printf("BT0 - this: %d\n", (int)((char*)this - buffer));
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}
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};
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struct BT2 : BT0 {
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char BT2FieldName0;
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BT2() {
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printf("BT2 - this: %d\n", (int)((char*)this - buffer));
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printf("BT2 - Fiel: %d\n", (int)((char*)&BT2FieldName0 - buffer));
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}
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};
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struct BT3 : BT0, BT2 {
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BT3() {
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printf("BT3 - this: %d\n", (int)((char*)this - buffer));
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}
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};
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// CHECK: *** Dumping AST Record Layout
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// CHECK: *** Dumping AST Record Layout
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct BT3
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// CHECK-NEXT: 0 | struct BT0 (base) (empty)
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// CHECK-NEXT: 1 | struct BT2 (base)
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// CHECK-NEXT: 1 | struct BT0 (base) (empty)
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// CHECK-NEXT: 1 | char BT2FieldName0
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// CHECK-NEXT: | [sizeof=2, align=1
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// CHECK-NEXT: | nvsize=2, nvalign=1]
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// CHECK-X64: *** Dumping AST Record Layout
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// CHECK-X64: *** Dumping AST Record Layout
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// CHECK-X64: *** Dumping AST Record Layout
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// CHECK-X64-NEXT: 0 | struct BT3
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// CHECK-X64-NEXT: 0 | struct BT0 (base) (empty)
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// CHECK-X64-NEXT: 1 | struct BT2 (base)
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// CHECK-X64-NEXT: 1 | struct BT0 (base) (empty)
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// CHECK-X64-NEXT: 1 | char BT2FieldName0
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// CHECK-X64-NEXT: | [sizeof=2, align=1
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// CHECK-X64-NEXT: | nvsize=2, nvalign=1]
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struct T0 : AT {
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T0() {
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printf("T0 (this) : %d\n", (char*)this - buffer);
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}
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};
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struct T1 : T0 {
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char a;
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T1() {
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printf("T1 (this) : %d\n", (char*)this - buffer);
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printf("T1 (fiel) : %d\n", (char*)&a - buffer);
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}
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};
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struct T2 : AT {
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char a;
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T2() {
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printf("T2 (this) : %d\n", (char*)this - buffer);
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printf("T2 (fiel) : %d\n", (char*)&a - buffer);
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}
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};
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struct __declspec(align(1)) T3 : virtual T1, virtual T2 {
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T3() {
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printf("T3 (this) : %d\n", (char*)this - buffer);
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}
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};
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// CHECK: *** Dumping AST Record Layout
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// CHECK: *** Dumping AST Record Layout
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// CHECK: *** Dumping AST Record Layout
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// CHECK: *** Dumping AST Record Layout
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// CHECK-NEXT: 0 | struct T3
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// CHECK-NEXT: 0 | (T3 vbtable pointer)
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// CHECK-NEXT: 4 | struct T1 (virtual base)
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// CHECK-NEXT: 4 | struct T0 (base) (empty)
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// CHECK-NEXT: 4 | struct AT (base) (empty)
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// CHECK-NEXT: 4 | char a
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// CHECK-NEXT: 12 | struct T2 (virtual base)
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// CHECK-NEXT: 12 | struct AT (base) (empty)
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// CHECK-NEXT: 12 | char a
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// CHECK-NEXT: | [sizeof=16, align=4
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// CHECK-NEXT: | nvsize=4, nvalign=4]
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// CHECK-X64: *** Dumping AST Record Layout
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// CHECK-X64: *** Dumping AST Record Layout
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// CHECK-X64: *** Dumping AST Record Layout
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// CHECK-X64: *** Dumping AST Record Layout
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// CHECK-X64-NEXT: 0 | struct T3
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// CHECK-X64-NEXT: 0 | (T3 vbtable pointer)
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// CHECK-X64-NEXT: 8 | struct T1 (virtual base)
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// CHECK-X64-NEXT: 8 | struct T0 (base) (empty)
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// CHECK-X64-NEXT: 8 | struct AT (base) (empty)
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// CHECK-X64-NEXT: 8 | char a
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// CHECK-X64-NEXT: 16 | struct T2 (virtual base)
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// CHECK-X64-NEXT: 16 | struct AT (base) (empty)
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// CHECK-X64-NEXT: 16 | char a
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// CHECK-X64-NEXT: | [sizeof=24, align=8
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// CHECK-X64-NEXT: | nvsize=8, nvalign=8]
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int a[
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sizeof(AT3) +
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sizeof(BT3) +
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sizeof(T3)];
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