mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-20 11:33:24 +02:00
a2029fa58e
In order to set breakpoints on labels and list source code around labels, we need collect debug information for labels, i.e., label name, the function label belong, line number in the file, and the address label located. In order to keep these information in LLVM IR and to allow backend to generate debug information correctly. We create a new kind of metadata for labels, DILabel. The format of DILabel is !DILabel(scope: !1, name: "foo", file: !2, line: 3) We hope to keep debug information as much as possible even the code is optimized. So, we create a new kind of intrinsic for label metadata to avoid the metadata is eliminated with basic block. The intrinsic will keep existing if we keep it from optimized out. The format of the intrinsic is llvm.dbg.label(metadata !1) It has only one argument, that is the DILabel metadata. The intrinsic will follow the label immediately. Backend could get the label metadata through the intrinsic's parameter. We also create DIBuilder API for labels to be used by Frontend. Frontend could use createLabel() to allocate DILabel objects, and use insertLabel() to insert llvm.dbg.label intrinsic in LLVM IR. Differential Revision: https://reviews.llvm.org/D45024 Patch by Hsiangkai Wang. llvm-svn: 331841
366 lines
16 KiB
LLVM
366 lines
16 KiB
LLVM
; REQUIRES: object-emission
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; RUN: %llc_dwarf -O0 -filetype=obj -dwarf-linkage-names=All < %s | llvm-dwarfdump -v - | FileCheck %s
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; CHECK: debug_info contents
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; CHECK: DW_AT_name{{.*}}= [[F1:.*]])
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; CHECK: [[NS1:0x[0-9a-f]*]]:{{ *}}DW_TAG_namespace
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; CHECK-NOT: DW_AT_decl_file
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; CHECK-NOT: DW_AT_decl_line
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; CHECK-NOT: NULL
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; CHECK: [[NS2:0x[0-9a-f]*]]:{{ *}}DW_TAG_namespace
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; CHECK-NEXT: DW_AT_name{{.*}} = "B"
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; CHECK-NOT: DW_AT_decl_file
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; CHECK-NOT: DW_AT_decl_line
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; CHECK-NOT: NULL
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; CHECK: [[I:0x[0-9a-f]*]]:{{ *}}DW_TAG_variable
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; CHECK-NEXT: DW_AT_name{{.*}}= "i"
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; CHECK: [[VAR_FWD:0x[0-9a-f]*]]:{{ *}}DW_TAG_variable
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; CHECK-NEXT: DW_AT_name{{.*}}= "var_fwd"
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; CHECK-NOT: NULL
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; CHECK: [[FOO:0x[0-9a-f]*]]:{{ *}}DW_TAG_structure_type
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; CHECK-NEXT: DW_AT_name{{.*}}= "foo"
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; CHECK-NEXT: DW_AT_declaration
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; CHECK-NOT: NULL
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; CHECK: [[BAR:0x[0-9a-f]*]]:{{ *}}DW_TAG_structure_type
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; CHECK-NEXT: DW_AT_name{{.*}}= "bar"
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; CHECK: DW_TAG_subprogram
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_MIPS_linkage_name
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name{{.*}}= "f1"
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; CHECK: [[FUNC1:.*]]: DW_TAG_subprogram
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_MIPS_linkage_name
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name{{.*}}= "f1"
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; CHECK: [[BAZ:0x[0-9a-f]*]]:{{.*}}DW_TAG_typedef
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name{{.*}}= "baz"
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; CHECK: [[VAR_DECL:0x[0-9a-f]*]]:{{.*}}DW_TAG_variable
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name{{.*}}= "var_decl"
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_declaration
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; CHECK: [[FUNC_DECL:0x[0-9a-f]*]]:{{.*}}DW_TAG_subprogram
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name{{.*}}= "func_decl"
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_declaration
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; CHECK: [[FUNC_FWD:0x[0-9a-f]*]]:{{.*}}DW_TAG_subprogram
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name{{.*}}= "func_fwd"
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; CHECK-NOT: DW_AT_declaration
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; CHECK: NULL
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_imported_module
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; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2:.*]])
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; CHECK-NEXT: DW_AT_decl_line{{.*}}(15)
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; CHECK-NEXT: DW_AT_import{{.*}}=> {[[NS2]]})
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; CHECK: NULL
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_imported_module
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; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2:.*]])
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; CHECK-NEXT: DW_AT_decl_line{{.*}}(18)
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; CHECK-NEXT: DW_AT_import{{.*}}=> {[[NS1]]})
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_subprogram
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; CHECK-NOT: {{DW_TAG|NULL}}
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; CHECK: DW_TAG_subprogram
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_MIPS_linkage_name
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name{{.*}}= "func"
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_imported_module
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; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2:.*]])
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; CHECK-NEXT: DW_AT_decl_line{{.*}}(26)
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; CHECK-NEXT: DW_AT_import{{.*}}=> {[[NS1]]})
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_imported_declaration
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; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
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; CHECK-NEXT: DW_AT_decl_line{{.*}}(27)
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; CHECK-NEXT: DW_AT_import{{.*}}=> {[[FOO]]})
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_imported_declaration
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; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
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; CHECK-NEXT: DW_AT_decl_line{{.*}}(28)
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; CHECK-NEXT: DW_AT_import{{.*}}=> {[[BAR]]})
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_imported_declaration
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; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
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; CHECK-NEXT: DW_AT_decl_line{{.*}}(29)
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; CHECK-NEXT: DW_AT_import{{.*}}=> {[[FUNC1]]})
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_imported_declaration
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; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
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; CHECK-NEXT: DW_AT_decl_line{{.*}}(30)
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; CHECK-NEXT: DW_AT_import{{.*}}=> {[[I]]})
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_imported_declaration
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; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
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; CHECK-NEXT: DW_AT_decl_line{{.*}}(31)
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; CHECK-NEXT: DW_AT_import{{.*}}=> {[[BAZ]]})
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; CHECK-NOT: NULL
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; CHECK: [[X:0x[0-9a-f]*]]:{{ *}}DW_TAG_imported_declaration
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; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
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; CHECK-NEXT: DW_AT_decl_line{{.*}}(32)
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; CHECK-NEXT: DW_AT_import{{.*}}=> {[[NS1]]})
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; CHECK-NEXT: DW_AT_name{{.*}}"X"
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_imported_declaration
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; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
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; CHECK-NEXT: DW_AT_decl_line{{.*}}(33)
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; CHECK-NEXT: DW_AT_import{{.*}}=> {[[X]]})
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; CHECK-NEXT: DW_AT_name{{.*}}"Y"
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_imported_declaration
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; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
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; CHECK-NEXT: DW_AT_decl_line{{.*}}(34)
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; CHECK-NEXT: DW_AT_import{{.*}}=> {[[VAR_DECL]]})
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; CHECK: DW_TAG_imported_declaration
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; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
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; CHECK-NEXT: DW_AT_decl_line{{.*}}(35)
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; CHECK-NEXT: DW_AT_import{{.*}}=> {[[FUNC_DECL]]})
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; CHECK: DW_TAG_imported_declaration
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; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
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; CHECK-NEXT: DW_AT_decl_line{{.*}}(36)
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; CHECK-NEXT: DW_AT_import{{.*}}=> {[[VAR_FWD]]})
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; CHECK: DW_TAG_imported_declaration
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; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
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; CHECK-NEXT: DW_AT_decl_line{{.*}}(37)
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; CHECK-NEXT: DW_AT_import{{.*}}=> {[[FUNC_FWD]]})
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; CHECK: DW_TAG_lexical_block
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_imported_module
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; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
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; CHECK-NEXT: DW_AT_decl_line{{.*}}(23)
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; CHECK-NEXT: DW_AT_import{{.*}}=>
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; CHECK: NULL
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; CHECK: NULL
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; CHECK: NULL
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; IR generated from clang/test/CodeGenCXX/debug-info-namespace.cpp, file paths
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; changed to protect the guilty. The C++ source code is:
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; // RUN...
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; // RUN...
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; // RUN...
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;
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; namespace A {
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; #line 1 "foo.cpp"
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; namespace B {
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; extern int i;
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; int f1() { return 0; }
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; void f1(int) { }
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; struct foo;
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; struct bar { };
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; typedef bar baz;
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; extern int var_decl;
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; void func_decl(void);
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; extern int var_fwd;
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; void func_fwd(void);
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; }
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; }
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; namespace A {
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; using namespace B;
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; }
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;
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; using namespace A;
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; namespace E = A;
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; int B::i = f1();
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; int func(bool b) {
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; if (b) {
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; using namespace A::B;
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; return i;
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; }
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; using namespace A;
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; using B::foo;
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; using B::bar;
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; using B::f1;
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; using B::i;
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; using B::baz;
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; namespace X = A;
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; namespace Y = X;
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; using B::var_decl;
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; using B::func_decl;
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; using B::var_fwd;
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; using B::func_fwd;
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; return i + X::B::i + Y::B::i;
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; }
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;
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; namespace A {
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; using B::i;
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; namespace B {
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; int var_fwd = i;
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; }
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; }
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; void B::func_fwd() {}
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@_ZN1A1B1iE = global i32 0, align 4, !dbg !131
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@_ZN1A1B7var_fwdE = global i32 0, align 4, !dbg !132
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@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_debug_info_namespace.cpp, i8* null }]
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; Function Attrs: nounwind ssp uwtable
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define i32 @_ZN1A1B2f1Ev() #0 !dbg !10 {
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entry:
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ret i32 0, !dbg !60
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}
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; Function Attrs: nounwind ssp uwtable
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define void @_ZN1A1B2f1Ei(i32) #0 !dbg !14 {
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entry:
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%.addr = alloca i32, align 4
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store i32 %0, i32* %.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %.addr, metadata !61, metadata !62), !dbg !63
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ret void, !dbg !64
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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define internal void @__cxx_global_var_init() section "__TEXT,__StaticInit,regular,pure_instructions" !dbg !17 {
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entry:
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%call = call i32 @_ZN1A1B2f1Ev(), !dbg !65
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store i32 %call, i32* @_ZN1A1B1iE, align 4, !dbg !65
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ret void, !dbg !65
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}
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; Function Attrs: nounwind ssp uwtable
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define i32 @_Z4funcb(i1 zeroext %b) #0 !dbg !21 {
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entry:
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%retval = alloca i32, align 4
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%b.addr = alloca i8, align 1
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%frombool = zext i1 %b to i8
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store i8 %frombool, i8* %b.addr, align 1
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call void @llvm.dbg.declare(metadata i8* %b.addr, metadata !66, metadata !62), !dbg !67
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%0 = load i8, i8* %b.addr, align 1, !dbg !68
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%tobool = trunc i8 %0 to i1, !dbg !68
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br i1 %tobool, label %if.then, label %if.end, !dbg !68
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if.then: ; preds = %entry
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%1 = load i32, i32* @_ZN1A1B1iE, align 4, !dbg !69
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store i32 %1, i32* %retval, !dbg !69
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br label %return, !dbg !69
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if.end: ; preds = %entry
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%2 = load i32, i32* @_ZN1A1B1iE, align 4, !dbg !70
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%3 = load i32, i32* @_ZN1A1B1iE, align 4, !dbg !70
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%add = add nsw i32 %2, %3, !dbg !70
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%4 = load i32, i32* @_ZN1A1B1iE, align 4, !dbg !70
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%add1 = add nsw i32 %add, %4, !dbg !70
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store i32 %add1, i32* %retval, !dbg !70
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br label %return, !dbg !70
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return: ; preds = %if.end, %if.then
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%5 = load i32, i32* %retval, !dbg !71
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ret i32 %5, !dbg !71
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}
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define internal void @__cxx_global_var_init1() section "__TEXT,__StaticInit,regular,pure_instructions" !dbg !25 {
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entry:
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%0 = load i32, i32* @_ZN1A1B1iE, align 4, !dbg !72
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store i32 %0, i32* @_ZN1A1B7var_fwdE, align 4, !dbg !72
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ret void, !dbg !72
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}
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; Function Attrs: nounwind ssp uwtable
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define void @_ZN1A1B8func_fwdEv() #0 !dbg !26 {
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entry:
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ret void, !dbg !73
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}
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define internal void @_GLOBAL__sub_I_debug_info_namespace.cpp() section "__TEXT,__StaticInit,regular,pure_instructions" {
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entry:
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call void @__cxx_global_var_init(), !dbg !74
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call void @__cxx_global_var_init1(), !dbg !74
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ret void, !dbg !74
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}
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attributes #0 = { nounwind ssp uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!57, !58}
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!llvm.ident = !{!59}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !3, globals: !30, imports: !33)
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!1 = !DIFile(filename: "debug-info-namespace.cpp", directory: "/tmp")
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!2 = !{}
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!3 = !{!4, !8}
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!4 = !DICompositeType(tag: DW_TAG_structure_type, name: "foo", line: 5, flags: DIFlagFwdDecl, file: !5, scope: !6, identifier: "_ZTSN1A1B3fooE")
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!5 = !DIFile(filename: "foo.cpp", directory: "/tmp")
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!6 = !DINamespace(name: "B", scope: !7)
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!7 = !DINamespace(name: "A", scope: null)
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!8 = !DICompositeType(tag: DW_TAG_structure_type, name: "bar", line: 6, size: 8, align: 8, file: !5, scope: !6, elements: !2, identifier: "_ZTSN1A1B3barE")
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!10 = distinct !DISubprogram(name: "f1", linkageName: "_ZN1A1B2f1Ev", line: 3, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 3, file: !5, scope: !6, type: !11, retainedNodes: !2)
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!11 = !DISubroutineType(types: !12)
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!12 = !{!13}
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!13 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!14 = distinct !DISubprogram(name: "f1", linkageName: "_ZN1A1B2f1Ei", line: 4, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 4, file: !5, scope: !6, type: !15, retainedNodes: !2)
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!15 = !DISubroutineType(types: !16)
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!16 = !{null, !13}
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!17 = distinct !DISubprogram(name: "__cxx_global_var_init", line: 20, isLocal: true, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 20, file: !5, scope: !18, type: !19, retainedNodes: !2)
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!18 = !DIFile(filename: "foo.cpp", directory: "/tmp")
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!19 = !DISubroutineType(types: !20)
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!20 = !{null}
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!21 = distinct !DISubprogram(name: "func", linkageName: "_Z4funcb", line: 21, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 21, file: !5, scope: !18, type: !22, retainedNodes: !2)
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!22 = !DISubroutineType(types: !23)
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!23 = !{!13, !24}
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!24 = !DIBasicType(tag: DW_TAG_base_type, name: "bool", size: 8, align: 8, encoding: DW_ATE_boolean)
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!25 = distinct !DISubprogram(name: "__cxx_global_var_init1", line: 44, isLocal: true, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 44, file: !5, scope: !18, type: !19, retainedNodes: !2)
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!26 = distinct !DISubprogram(name: "func_fwd", linkageName: "_ZN1A1B8func_fwdEv", line: 47, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 47, file: !5, scope: !6, type: !19, retainedNodes: !2)
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!27 = distinct !DISubprogram(name: "", linkageName: "_GLOBAL__sub_I_debug_info_namespace.cpp", isLocal: true, isDefinition: true, flags: DIFlagArtificial, isOptimized: false, unit: !0, file: !1, scope: !28, type: !29, retainedNodes: !2)
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!28 = !DIFile(filename: "debug-info-namespace.cpp", directory: "/tmp")
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!29 = !DISubroutineType(types: !2)
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!30 = !{!131, !132}
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!31 = !DIGlobalVariable(name: "i", linkageName: "_ZN1A1B1iE", line: 20, isLocal: false, isDefinition: true, scope: !6, file: !18, type: !13)
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!32 = !DIGlobalVariable(name: "var_fwd", linkageName: "_ZN1A1B7var_fwdE", line: 44, isLocal: false, isDefinition: true, scope: !6, file: !18, type: !13)
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!33 = !{!34, !35, !36, !37, !40, !41, !42, !43, !44, !45, !47, !48, !49, !51, !54, !55, !56}
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!34 = !DIImportedEntity(tag: DW_TAG_imported_module, file: !5, line: 15, scope: !7, entity: !6)
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!35 = !DIImportedEntity(tag: DW_TAG_imported_module, file: !5, line: 18, scope: !0, entity: !7)
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!36 = !DIImportedEntity(tag: DW_TAG_imported_declaration, file: !5, line: 19, name: "E", scope: !0, entity: !7)
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!37 = !DIImportedEntity(tag: DW_TAG_imported_module, file: !5, line: 23, scope: !38, entity: !6)
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!38 = distinct !DILexicalBlock(line: 22, column: 10, file: !5, scope: !39)
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!39 = distinct !DILexicalBlock(line: 22, column: 7, file: !5, scope: !21)
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!40 = !DIImportedEntity(tag: DW_TAG_imported_module, file: !5, line: 26, scope: !21, entity: !7)
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!41 = !DIImportedEntity(tag: DW_TAG_imported_declaration, file: !5, line: 27, scope: !21, entity: !4)
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|
!42 = !DIImportedEntity(tag: DW_TAG_imported_declaration, file: !5, line: 28, scope: !21, entity: !8)
|
|
!43 = !DIImportedEntity(tag: DW_TAG_imported_declaration, file: !5, line: 29, scope: !21, entity: !14)
|
|
!44 = !DIImportedEntity(tag: DW_TAG_imported_declaration, file: !5, line: 30, scope: !21, entity: !31)
|
|
!45 = !DIImportedEntity(tag: DW_TAG_imported_declaration, file: !5, line: 31, scope: !21, entity: !46)
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|
!46 = !DIDerivedType(tag: DW_TAG_typedef, name: "baz", line: 7, file: !5, scope: !6, baseType: !8)
|
|
!47 = !DIImportedEntity(tag: DW_TAG_imported_declaration, file: !5, line: 32, name: "X", scope: !21, entity: !7)
|
|
!48 = !DIImportedEntity(tag: DW_TAG_imported_declaration, file: !5, line: 33, name: "Y", scope: !21, entity: !47)
|
|
!49 = !DIImportedEntity(tag: DW_TAG_imported_declaration, file: !5, line: 34, scope: !21, entity: !50)
|
|
!50 = !DIGlobalVariable(name: "var_decl", linkageName: "_ZN1A1B8var_declE", line: 8, isLocal: false, isDefinition: false, scope: !6, file: !18, type: !13)
|
|
!51 = !DIImportedEntity(tag: DW_TAG_imported_declaration, file: !5, line: 35, scope: !21, entity: !52)
|
|
!52 = !DISubprogram(name: "func_decl", linkageName: "_ZN1A1B9func_declEv", line: 9, isLocal: false, isDefinition: false, flags: DIFlagPrototyped, isOptimized: false, file: !5, scope: !6, type: !19, retainedNodes: !53)
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|
!53 = !{} ; previously: invalid DW_TAG_base_type
|
|
!54 = !DIImportedEntity(tag: DW_TAG_imported_declaration, file: !5, line: 36, scope: !21, entity: !32)
|
|
!55 = !DIImportedEntity(tag: DW_TAG_imported_declaration, file: !5, line: 37, scope: !21, entity: !26)
|
|
!56 = !DIImportedEntity(tag: DW_TAG_imported_declaration, file: !5, line: 42, scope: !7, entity: !31)
|
|
!57 = !{i32 2, !"Dwarf Version", i32 2}
|
|
!58 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!59 = !{!"clang version 3.6.0 "}
|
|
!60 = !DILocation(line: 3, column: 12, scope: !10)
|
|
!61 = !DILocalVariable(name: "", line: 4, arg: 1, scope: !14, file: !18, type: !13)
|
|
!62 = !DIExpression()
|
|
!63 = !DILocation(line: 4, column: 12, scope: !14)
|
|
!64 = !DILocation(line: 4, column: 16, scope: !14)
|
|
!65 = !DILocation(line: 20, column: 12, scope: !17)
|
|
!66 = !DILocalVariable(name: "b", line: 21, arg: 1, scope: !21, file: !18, type: !24)
|
|
!67 = !DILocation(line: 21, column: 15, scope: !21)
|
|
!68 = !DILocation(line: 22, column: 7, scope: !21)
|
|
!69 = !DILocation(line: 24, column: 5, scope: !38)
|
|
!70 = !DILocation(line: 38, column: 3, scope: !21)
|
|
!71 = !DILocation(line: 39, column: 1, scope: !21)
|
|
!72 = !DILocation(line: 44, column: 15, scope: !25)
|
|
!73 = !DILocation(line: 47, column: 21, scope: !26)
|
|
!74 = !DILocation(line: 0, scope: !75)
|
|
!75 = !DILexicalBlockFile(discriminator: 0, file: !5, scope: !27)
|
|
!131 = !DIGlobalVariableExpression(var: !31, expr: !DIExpression())
|
|
!132 = !DIGlobalVariableExpression(var: !32, expr: !DIExpression())
|