mirror of
https://github.com/darlinghq/darling-libobjc2.git
synced 2024-11-27 06:00:30 +00:00
| .. | ||
| ClassIMPCache.cpp | ||
| ClassLookupCache.cpp | ||
| ClassMethodInliner.cpp | ||
| COPYING | ||
| IMPCacher.cpp | ||
| IMPCacher.h | ||
| IvarPass.cpp | ||
| LoopIMPCachePass.cpp | ||
| Makefile | ||
| README | ||
| TypeFeedback.cpp | ||
| TypeFeedbackDrivenInliner.cpp | ||
| TypeInfoProvider.h | ||
GNUstep Runtime Optimisations ============================= This directory contains LLVM optimisations specific to libobjc2. To build them, you must copy this directory to llvm/lib/Transforms/GNURuntime (where llvm is the root of your llvm checkout). Running GNU make will then create GNUObjCRuntime.so. This library can be passed to opt to run optimisations on bitcode generated with clang or LanguageKit. Non-Fragile Ivar Pass --------------------- Running `opt -gnu-nonfragile-ivar` will invoke the non-fragile instance variable lowering pass. This will turn non-fragile instance variable accesses, which go via one or two indirection layers, into more fragile ones. If a class and all of its superclasses are present in the module then this pass will turn indirect instance variable accesses into hard-coded ones. For this pass to be most useful, it should be run as a link-time optimisation. Type Feedback ------------- Running `opt -gnu-objc-type-feedback` enables type feedback. Objective-C message lookups will be replaced by calls to the profiling version in the runtime library. The generated data can then be used for future optimisations (speculative inlining, polymorphic inline caching, and so on), which have not yet been written.