Michael Buch 711a644127 [clang][DebugInfo] Emit DW_AT_type of preferred name if available ... With this patch, whenever we emit a `DW_AT_type` for some declaration and the type is a template class with a `clang::PreferredNameAttr`, we will emit the typedef that the attribute refers to instead. I.e., ``` 0x123 DW_TAG_variable DW_AT_name "var" DW_AT_type (0x123 "basic_string<char>") 0x124 DW_TAG_structure_type DW_AT_name "basic_string<char>" ``` ...becomes ``` 0x123 DW_TAG_variable DW_AT_name "var" DW_AT_type (0x124 "std::string") 0x124 DW_TAG_structure_type DW_AT_name "basic_string<char>" 0x125 DW_TAG_typedef DW_AT_name "std::string" DW_AT_type (0x124 "basic_string<char>") ``` We do this by returning the preferred name typedef `DIType` when we create a structure definition. In some cases, e.g., with `-gmodules`, we don't complete the structure definition immediately but do so later via `completeClassData`, which overwrites the `TypeCache`. In such cases we don't actually want to rewrite the cache with the preferred name. We handle this by returning both the definition and the preferred typedef from `CreateTypeDefinition` and let the callee decide what to do with it. Essentially we set up the types as: ``` TypeCache[Record] => DICompositeType ReplaceMap[Record] => DIDerivedType(baseType: DICompositeType) ``` For now we keep this behind LLDB tuning. **Testing** - Added clang unit-test - `check-llvm`, `check-clang` pass - Confirmed that this change correctly repoints `basic_string` references in some of my test programs. - Will add follow-up LLDB API tests Differential Revision: https://reviews.llvm.org/D145803		2023-04-07 01:37:36 +01:00
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API	[clang][DebugInfo] Emit DW_AT_type of preferred name if available	2023-04-07 01:37:36 +01:00
Shell	[LLDB] Fix for D139955 Summary:	2023-03-23 14:03:42 -07:00
Unit	Use lit_config.substitute instead of foo % lit_config.params everywhere	2022-03-16 09:57:41 +01:00
CMakeLists.txt	[lldb] Introduce CMake variable LLDB_ENFORCE_STRICT_TEST_REQUIREMENTS	2023-03-20 10:41:22 -07:00
lit.cfg.py
lit.site.cfg.py.in	Use lit_config.substitute instead of foo % lit_config.params everywhere	2022-03-16 09:57:41 +01:00