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authorBrock Wyma <brock.wyma@intel.com>2018-05-22 12:41:19 +0000
committerBrock Wyma <brock.wyma@intel.com>2018-05-22 12:41:19 +0000
commit8557ec5d642a86bc7d0fa3d95f5f6023a7b7cb26 (patch)
tree9faadd3f29ed7f6427e643ff94f2d4d272e4be98 /clang/test/CodeGenCXX/debug-info-codeview-unnamed.cpp
parent067ec70d4fcbfc6bbb437110d94bf7e301717cd8 (diff)
downloadbcm5719-llvm-8557ec5d642a86bc7d0fa3d95f5f6023a7b7cb26.tar.gz
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[CodeView] Enable debugging of captured variables within C++ lambdas
This change will help Visual Studio resolve forward references to C++ lambda routines used by captured variables. Differential Revision: https://reviews.llvm.org/D45438 llvm-svn: 332975
Diffstat (limited to 'clang/test/CodeGenCXX/debug-info-codeview-unnamed.cpp')
-rw-r--r--clang/test/CodeGenCXX/debug-info-codeview-unnamed.cpp108
1 files changed, 108 insertions, 0 deletions
diff --git a/clang/test/CodeGenCXX/debug-info-codeview-unnamed.cpp b/clang/test/CodeGenCXX/debug-info-codeview-unnamed.cpp
new file mode 100644
index 00000000000..dd4cc9cb478
--- /dev/null
+++ b/clang/test/CodeGenCXX/debug-info-codeview-unnamed.cpp
@@ -0,0 +1,108 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -debug-info-kind=limited -S -emit-llvm -std=c++11 -o - %s | FileCheck --check-prefix LINUX %s
+// RUN: %clang_cc1 -triple x86_64-windows-msvc -debug-info-kind=limited -gcodeview -S -emit-llvm -std=c++11 -o - %s | FileCheck --check-prefix MSVC %s
+
+int main(int argc, char* argv[], char* arge[]) {
+ //
+ // In CodeView, the LF_MFUNCTION entry for "bar()" refers to the forward
+ // reference of the unnamed struct. Visual Studio requires a unique
+ // identifier to match the LF_STRUCTURE forward reference to the definition.
+ //
+ struct { void bar() {} } one;
+ //
+ // LINUX: !{{[0-9]+}} = !DILocalVariable(name: "one"
+ // LINUX-SAME: type: [[TYPE_OF_ONE:![0-9]+]]
+ // LINUX-SAME: )
+ // LINUX: [[TYPE_OF_ONE]] = distinct !DICompositeType(
+ // LINUX-SAME: tag: DW_TAG_structure_type
+ // LINUX-NOT: name:
+ // LINUX-NOT: identifier:
+ // LINUX-SAME: )
+ //
+ // MSVC: !{{[0-9]+}} = !DILocalVariable(name: "one"
+ // MSVC-SAME: type: [[TYPE_OF_ONE:![0-9]+]]
+ // MSVC-SAME: )
+ // MSVC: [[TYPE_OF_ONE]] = distinct !DICompositeType
+ // MSVC-SAME: tag: DW_TAG_structure_type
+ // MSVC-SAME: name: "<unnamed-type-one>"
+ // MSVC-SAME: identifier: ".?AU<unnamed-type-one>@?1??main@@9@"
+ // MSVC-SAME: )
+
+
+ // In CodeView, the LF_POINTER entry for "ptr2unnamed" refers to the forward
+ // reference of the unnamed struct. Visual Studio requires a unique
+ // identifier to match the LF_STRUCTURE forward reference to the definition.
+ //
+ struct { int bar; } two = { 42 };
+ int decltype(two)::*ptr2unnamed = &decltype(two)::bar;
+ //
+ // LINUX: !{{[0-9]+}} = !DILocalVariable(name: "two"
+ // LINUX-SAME: type: [[TYPE_OF_TWO:![0-9]+]]
+ // LINUX-SAME: )
+ // LINUX: [[TYPE_OF_TWO]] = distinct !DICompositeType(
+ // LINUX-SAME: tag: DW_TAG_structure_type
+ // LINUX-NOT: name:
+ // LINUX-NOT: identifier:
+ // LINUX-SAME: )
+ //
+ // MSVC: !{{[0-9]+}} = !DILocalVariable(name: "two"
+ // MSVC-SAME: type: [[TYPE_OF_TWO:![0-9]+]]
+ // MSVC-SAME: )
+ // MSVC: [[TYPE_OF_TWO]] = distinct !DICompositeType
+ // MSVC-SAME: tag: DW_TAG_structure_type
+ // MSVC-SAME: name: "<unnamed-type-two>"
+ // MSVC-SAME: identifier: ".?AU<unnamed-type-two>@?2??main@@9@"
+ // MSVC-SAME: )
+
+
+ // In DWARF, named structures which are not externally visibile do not
+ // require an identifier. In CodeView, named structures are given an
+ // identifier.
+ //
+ struct named { int bar; int named::* p2mem; } three = { 42, &named::bar };
+ //
+ // LINUX: !{{[0-9]+}} = !DILocalVariable(name: "three"
+ // LINUX-SAME: type: [[TYPE_OF_THREE:![0-9]+]]
+ // LINUX-SAME: )
+ // LINUX: [[TYPE_OF_THREE]] = distinct !DICompositeType(
+ // LINUX-SAME: tag: DW_TAG_structure_type
+ // LINUX-SAME: name: "named"
+ // LINUX-NOT: identifier:
+ // LINUX-SAME: )
+ //
+ // MSVC: !{{[0-9]+}} = !DILocalVariable(name: "three"
+ // MSVC-SAME: type: [[TYPE_OF_THREE:![0-9]+]]
+ // MSVC-SAME: )
+ // MSVC: [[TYPE_OF_THREE]] = distinct !DICompositeType
+ // MSVC-SAME: tag: DW_TAG_structure_type
+ // MSVC-SAME: name: "named"
+ // MSVC-SAME: identifier: ".?AUnamed@?1??main@@9@"
+ // MSVC-SAME: )
+
+
+ // In CodeView, the LF_MFUNCTION entry for the lambda "operator()" routine
+ // refers to the forward reference of the unnamed LF_CLASS for the lambda.
+ // Visual Studio requires a unique identifier to match the forward reference
+ // of the LF_CLASS to its definition.
+ //
+ auto four = [argc](int i) -> int { return argc == i ? 1 : 0; };
+ //
+ // LINUX: !{{[0-9]+}} = !DILocalVariable(name: "four"
+ // LINUX-SAME: type: [[TYPE_OF_FOUR:![0-9]+]]
+ // LINUX-SAME: )
+ // LINUX: [[TYPE_OF_FOUR]] = distinct !DICompositeType(
+ // LINUX-SAME: tag: DW_TAG_class_type
+ // LINUX-NOT: name:
+ // LINUX-NOT: identifier:
+ // LINUX-SAME: )
+ //
+ // MSVC: !{{[0-9]+}} = !DILocalVariable(name: "four"
+ // MSVC-SAME: type: [[TYPE_OF_FOUR:![0-9]+]]
+ // MSVC-SAME: )
+ // MSVC: [[TYPE_OF_FOUR]] = distinct !DICompositeType
+ // MSVC-SAME: tag: DW_TAG_class_type
+ // MSVC-NOT: name:
+ // MSVC-SAME: identifier: ".?AV<lambda_0>@?0??main@@9@"
+ // MSVC-SAME: )
+
+ return 0;
+}
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