4db54e6597
This commit reverts the changes in https://github.com/llvm/llvm-project/pull/71780 and all of its follow-up patches. We got reports of the `.debug_names/.debug_gnu_pubnames/gdb_index/etc.` sections growing by a non-trivial amount for some large projects. While GCC emits definitions for static data member constants into the Names index, they do so *only* for explicitly `constexpr` members. We were indexing *all* constant-initialized const-static members, which is likely where the significant size difference comes from. However, only emitting explicitly `constexpr` variables into the index doesn't seem like a good way forward, since from clang's perspective `const`-static integrals are `constexpr` too, and that shouldn't be any different in the debug-info component. Also, as new code moves to `constexpr` instead of `const` static for constants, such solution would just delay the growth of the Names index. To prevent the size regression we revert to not emitting definitions for static data-members that have no location. To support access to such constants from LLDB we'll most likely have to have to make LLDB find the constants by looking at the containing class first.
195 lines
5.9 KiB
C++
195 lines
5.9 KiB
C++
struct foo;
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void func(foo *f) {
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}
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class bar;
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void func(bar *f) {
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}
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union baz;
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void func(baz *f) {
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}
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class B {
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public:
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virtual ~B();
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};
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B::~B() { extern void mayThrow(); mayThrow();
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}
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struct C {
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static int s;
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virtual ~C();
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};
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C::~C() {
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}
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struct D {
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D();
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virtual ~D();
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void func() {
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}
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};
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struct E {
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E();
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virtual ~E();
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virtual void func() {
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}
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};
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struct F {
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struct inner {
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};
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static const int i = 2;
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virtual ~F();
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};
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struct G {
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virtual void func();
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struct inner {
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int j;
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};
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};
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struct H {};
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struct I : virtual H {};
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struct J : I {};
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J j;
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struct K {
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virtual void func() {
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}
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};
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struct A {
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int one;
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static const int HdrSize = 52;
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int two;
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A() {
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int x = 1;
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}
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};
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namespace {
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struct L {
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void func() {
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}
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};
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}
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void f1() {
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D x;
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x.func();
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E y;
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int i = F::i;
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F::inner z;
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K k;
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k.func();
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L l;
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l.func();
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}
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int main(int argc, char **argv) {
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B b;
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G::inner c_i;
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if (argc) {
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A a;
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}
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return 0;
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}
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// RUN: %clang_cc1 -triple x86_64-unknown_unknown -emit-llvm -debug-info-kind=limited -fexceptions -std=c++98 %s -o - | FileCheck -check-prefix=CHECK98 -check-prefix=CHECK %s
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// RUN: %clang_cc1 -triple i686-cygwin -emit-llvm -debug-info-kind=limited -fexceptions -std=c++98 %s -o - | FileCheck -check-prefix=CHECK98 -check-prefix=CHECK %s
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// RUN: %clang_cc1 -triple armv7l-unknown-linux-gnueabihf -emit-llvm -debug-info-kind=limited -fexceptions -std=c++98 %s -o - | FileCheck -check-prefix=CHECK98 -check-prefix=CHECK %s
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// RUN: %clang_cc1 -triple x86_64-unknown_unknown -emit-llvm -debug-info-kind=limited -fexceptions -std=c++11 %s -o - | FileCheck -check-prefix=CHECK11 -check-prefix=CHECK %s
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// RUN: %clang_cc1 -triple i686-cygwin -emit-llvm -debug-info-kind=limited -fexceptions -std=c++11 %s -o - | FileCheck -check-prefix=CHECK11 -check-prefix=CHECK %s
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// RUN: %clang_cc1 -triple armv7l-unknown-linux-gnueabihf -emit-llvm -debug-info-kind=limited -fexceptions -std=c++11 %s -o - | FileCheck -check-prefix=CHECK11 -check-prefix=CHECK %s
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// CHECK98: invoke {{.+}} @_ZN1BD1Ev(ptr {{[^,]*}} %b)
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// CHECK98-NEXT: unwind label %{{.+}}, !dbg ![[EXCEPTLOC:.*]]
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// CHECK11: call {{.+}} @_ZN1BD1Ev(ptr {{[^,]*}} %b){{.*}}, !dbg ![[EXCEPTLOC:.*]]
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// CHECK: store i32 0, ptr %{{.+}}, !dbg ![[RETLOC:.*]]
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// CHECK: [[F:![0-9]*]] = !DICompositeType(tag: DW_TAG_structure_type, name: "F"
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// CHECK-SAME: DIFlagFwdDecl
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// CHECK-NOT: identifier:
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// CHECK-SAME: ){{$}}
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// CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "I"
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// CHECK-NOT: DIFlagFwdDecl
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// CHECK-SAME: ){{$}}
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// CHECK: ![[INT:[0-9]+]] = !DIBasicType(name: "int"
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// CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "foo"
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// CHECK: !DICompositeType(tag: DW_TAG_class_type, name: "bar"
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// CHECK: !DICompositeType(tag: DW_TAG_union_type, name: "baz"
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// CHECK: !DICompositeType(tag: DW_TAG_class_type, name: "B"
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// CHECK-NOT: DIFlagFwdDecl
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// CHECK-SAME: ){{$}}
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// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "_vptr$B",
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// CHECK-SAME: DIFlagArtificial
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// CHECK: [[C:![0-9]*]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "C",
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// CHECK-NOT: DIFlagFwdDecl
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// CHECK-SAME: elements: [[C_MEM:![0-9]*]]
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// CHECK-SAME: vtableHolder: [[C]]
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// CHECK-NOT: identifier:
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// CHECK-SAME: ){{$}}
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// CHECK: [[C_MEM]] = !{[[C_VPTR:![0-9]*]], [[C_S:![0-9]*]], [[C_DTOR:![0-9]*]]}
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// CHECK: [[C_VPTR]] = !DIDerivedType(tag: DW_TAG_member, name: "_vptr$C"
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// CHECK-SAME: DIFlagArtificial
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// CHECK: [[C_S]] = !DIDerivedType(tag: DW_TAG_member, name: "s"
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// CHECK-SAME: baseType: ![[INT]]
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// CHECK-SAME: DIFlagStaticMember
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// CHECK: [[C_DTOR]] = !DISubprogram(name: "~C"
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// CHECK: [[D:![0-9]+]] = !DICompositeType(tag: DW_TAG_structure_type, name: "D"
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// CHECK-SAME: size:
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// CHECK-SAME: DIFlagFwdDecl
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// CHECK-NOT: identifier:
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// CHECK-SAME: ){{$}}
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// CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "E"
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// CHECK-SAME: DIFlagFwdDecl
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// CHECK-NOT: identifier:
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// CHECK-SAME: ){{$}}
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// CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "K"
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// CHECK-SAME: identifier: "_ZTS1K"
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// CHECK-SAME: ){{$}}
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// CHECK: [[L:![0-9]+]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "L"
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// CHECK-SAME: ){{$}}
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// CHECK: [[L_FUNC_DECL:![0-9]*]] = !DISubprogram(name: "func",{{.*}} scope: [[L]]
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// CHECK-SAME: DISPFlagLocalToUnit
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// CHECK: !DISubprogram(name: "func",{{.*}} scope: [[D]]
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// CHECK-SAME: DISPFlagDefinition
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// CHECK-SAME: declaration: [[D_FUNC_DECL:![0-9]*]]
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// CHECK: [[D_FUNC_DECL]] = !DISubprogram(name: "func",{{.*}} scope: [[D]]
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// CHECK: !DISubprogram(name: "func",{{.*}} scope: [[L]]
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// CHECK-SAME: DISPFlagLocalToUnit | DISPFlagDefinition
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// CHECK-SAME: declaration: [[L_FUNC_DECL]]
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// CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "inner",{{.*}} line: 50
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// CHECK-NOT: DIFlagFwdDecl
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// CHECK-SAME: elements: [[G_INNER_MEM:![0-9]*]]
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// CHECK-SAME: identifier: "_ZTSN1G5innerE"
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// CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "G"
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// CHECK-SAME: DIFlagFwdDecl
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// CHECK-NOT: identifier:
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// CHECK-SAME: ){{$}}
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// CHECK: [[G_INNER_MEM]] = !{[[G_INNER_I:![0-9]*]]}
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// CHECK: [[G_INNER_I]] = !DIDerivedType(tag: DW_TAG_member, name: "j"
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// CHECK-SAME: baseType: ![[INT]]
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// CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "A"
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// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "HdrSize"
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// CHECK: ![[EXCEPTLOC]] = !DILocation(line: 100,
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// CHECK: ![[RETLOC]] = !DILocation(line: 99,
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