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1fcc2bc31b
D155991 changed the file lookup to do a full string compare on the filename; however, this added ~0.5% to compile time with -g. Go back to the previous pointer-based lookup, but capture the main file's checksum as well as its name to use when creating the extra DIFile entry. This causes all entries to be consistent and also avoids computing the checksum twice. This reverts commit 5956648fc3ba11dd6b0d0f2d1d9b923e7f80f247. There was a string lifetime issue that is now corrected. Differential Revision: https://reviews.llvm.org/D156571
48 lines
2.1 KiB
C++
48 lines
2.1 KiB
C++
// RUN: %clang_cc1 -emit-llvm -debug-info-kind=limited -triple x86_64-pc-linux-gnu %s \
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// RUN: -dwarf-version=5 -main-file-name debug-info-function-context.cpp -o - | FileCheck %s
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struct C {
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void member_function();
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static int static_member_function();
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static int static_member_variable;
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};
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int C::static_member_variable = 0;
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void C::member_function() { static_member_variable = 0; }
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int C::static_member_function() { return static_member_variable; }
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C global_variable;
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int global_function() { return -1; }
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namespace ns {
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void global_namespace_function() { global_variable.member_function(); }
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int global_namespace_variable = 1;
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}
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// Generate the artificial global functions to initialize a global.
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int global_initialized_variable = C::static_member_function();
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// Check that the functions that belong to C have C as a context and the
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// functions that belong to the namespace have it as a context, and the global
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// functions (user-defined and artificial) have the file as a context.
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// The first DIFile is for the CU, the second is what everything else uses.
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// We're using DWARF v5 so both should have MD5 checksums.
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// CHECK: !DIFile(filename: "{{.*}}context.cpp",{{.*}} checksumkind: CSK_MD5, checksum: [[CKSUM:".*"]]
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// CHECK: ![[FILE:[0-9]+]] = !DIFile(filename: "{{.*}}context.cpp",{{.*}} checksumkind: CSK_MD5, checksum: [[CKSUM]]
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// CHECK: ![[C:[0-9]+]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "C",
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// CHECK: ![[NS:.*]] = !DINamespace(name: "ns"
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// CHECK: !DISubprogram(name: "member_function",{{.*}} scope: ![[C]],{{.*}} DISPFlagDefinition
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// CHECK: !DISubprogram(name: "static_member_function",{{.*}} scope: ![[C]],{{.*}} DISPFlagDefinition
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// CHECK: !DISubprogram(name: "global_function",{{.*}} scope: ![[FILE]],{{.*}} DISPFlagDefinition
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// CHECK: !DISubprogram(name: "global_namespace_function",{{.*}} scope: ![[NS]],{{.*}} DISPFlagDefinition
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// CHECK: !DISubprogram(name: "__cxx_global_var_init",{{.*}} scope: ![[FILE]],{{.*}} DISPFlagDefinition
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// CHECK: !DISubprogram(linkageName: "_GLOBAL__sub_I_{{.*}}",{{.*}} scope: ![[FILE]],{{.*}} DISPFlagDefinition
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