eee1f7cef8
This caused asserts: llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp:2331: virtual void llvm::DwarfDebug::endFunctionImpl(const llvm::MachineFunction *): Assertion `LScopes.getAbstractScopesList().size() == NumAbstractSubprograms && "getOrCreateAbstractScope() inserted an abstract subprogram scope"' failed. See comment on the code review for reproducer. > RFC https://discourse.llvm.org/t/rfc-dwarfdebug-fix-and-improve-handling-imported-entities-types-and-static-local-in-subprogram-and-lexical-block-scopes/68544 > > Similar to imported declarations, the patch tracks function-local types in > DISubprogram's 'retainedNodes' field. DwarfDebug is adjusted in accordance with > the aforementioned metadata change and provided a support of function-local > types scoped within a lexical block. > > The patch assumes that DICompileUnit's 'enums field' no longer tracks local > types and DwarfDebug would assert if any locally-scoped types get placed there. > > Reviewed By: jmmartinez > > Differential Revision: https://reviews.llvm.org/D144006 This reverts commit f8aab289b5549086062588fba627b0e4d3a5ab15.
64 lines
1.8 KiB
C++
64 lines
1.8 KiB
C++
// RUN: %clang_cc1 -emit-llvm -debug-info-kind=limited -triple x86_64-linux-gnu %s -o - | FileCheck %s
|
|
|
|
// Make sure that we emit a global variable for each of the members of the
|
|
// anonymous union.
|
|
|
|
static union {
|
|
int c;
|
|
int d;
|
|
union {
|
|
int a;
|
|
};
|
|
struct {
|
|
int b;
|
|
};
|
|
};
|
|
|
|
int test_it() {
|
|
c = 1;
|
|
d = 2;
|
|
a = 4;
|
|
return (c == 1);
|
|
}
|
|
|
|
void foo() {
|
|
union {
|
|
int i;
|
|
char c;
|
|
};
|
|
i = 8;
|
|
}
|
|
|
|
// A funky reinterpret cast idiom that we used to crash on.
|
|
template <class T>
|
|
unsigned char *buildBytes(const T v) {
|
|
static union {
|
|
unsigned char result[sizeof(T)];
|
|
T value;
|
|
};
|
|
value = v;
|
|
return result;
|
|
}
|
|
|
|
void instantiate(int x) {
|
|
buildBytes(x);
|
|
}
|
|
|
|
// CHECK: !DIGlobalVariable(name: "c",{{.*}} file: [[FILE:.*]], line: 6,{{.*}} isLocal: true, isDefinition: true
|
|
// CHECK: !DIGlobalVariable(name: "d",{{.*}} file: [[FILE]], line: 6,{{.*}} isLocal: true, isDefinition: true
|
|
// CHECK: [[FILE]] = !DIFile(filename: "{{.*}}debug-info-anon-union-vars.cpp",
|
|
// CHECK: !DIGlobalVariable(name: "a",{{.*}} file: [[FILE]], line: 6,{{.*}} isLocal: true, isDefinition: true
|
|
// CHECK: !DIGlobalVariable(name: "b",{{.*}} file: [[FILE]], line: 6,{{.*}} isLocal: true, isDefinition: true
|
|
// CHECK: !DIGlobalVariable(name: "result", {{.*}} isLocal: false, isDefinition: true
|
|
// CHECK: !DIGlobalVariable(name: "value", {{.*}} isLocal: false, isDefinition: true
|
|
// CHECK: !DILocalVariable(name: "i", {{.*}}, flags: DIFlagArtificial
|
|
// CHECK: !DILocalVariable(name: "c", {{.*}}, flags: DIFlagArtificial
|
|
// CHECK: !DILocalVariable(
|
|
// CHECK-NOT: name:
|
|
// CHECK: type: ![[UNION:[0-9]+]]
|
|
// CHECK: ![[UNION]] = distinct !DICompositeType(tag: DW_TAG_union_type,
|
|
// CHECK-NOT: name:
|
|
// CHECK: elements
|
|
// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "i", scope: ![[UNION]],
|
|
// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "c", scope: ![[UNION]],
|