David Bolvansky 085daf4687 [Compiler] Fix LLVM_NODISCARD for GCC ... Summary: This branch is currently dead since we don't use C++17. #if __cplusplus > 201402L && LLVM_HAS_CPP_ATTRIBUTE(nodiscard) #define LLVM_NODISCARD [[nodiscard]] This branch is Clang-only. #elif LLVM_HAS_CPP_ATTRIBUTE(clang::warn_unused_result) #define LLVM_NODISCARD [[clang::warn_unused_result]] While we could use gnu variant [[gnu::warn_unused_result]], it is not ideal because it works only on functions. /home/xbolva00/LLVM/llvm/include/llvm/ADT/ArrayRef.h:41:24: warning: ‘warn_unused_result’ attribute only applies to function types [-Wattributes] GCC (checked 5,6,7,8) seems to enable [[nodiscard]] even in C++14 mode and does not produce warnings that nodiscard is C++17 feature. but Clang does - but we do not reach it due the code above. So it affects only GCC and does what we want. Reviewers: jfb, rsmith, echristo, aaron.ballman Reviewed By: aaron.ballman Subscribers: MaskRay, dexonsmith Differential Revision: https://reviews.llvm.org/D67663 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@372761 91177308-0d34-0410-b5e6-96231b3b80d8		2019-09-24 14:01:14 +00:00
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llvm	[Compiler] Fix LLVM_NODISCARD for GCC	2019-09-24 14:01:14 +00:00
llvm-c	Remove the obsolete BlockByRefStruct flag from LLVM IR	2019-09-18 22:38:56 +00:00