Block Support C Llvm

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Language Specification for Blocks — Clang 11 documentation

    http://clang.llvm.org/docs/BlockLanguageSpec.html
    [variadic.c] A Block that takes no arguments must specify void in the argument list [voidarg.c]. An empty parameter list does not represent, as K&R provide, an unspecified argument list. Note: both gcc and clang support K&R style as a convenience. A Block reference …

Blocks (C language extension) - Wikipedia

    https://en.wikipedia.org/wiki/Blocks_%28C_language_extension%29
    Blocks are a non-standard extension added by Apple Inc. to Clang's implementations of the C, C++, and Objective-C programming languages that uses a lambda expression-like syntax to create closures within these languages. Blocks are supported for programs developed for Mac OS X 10.6+ and iOS 4.0+, although third-party runtimes allow use on Mac OS X 10.5 and iOS 2.2+ and non-Apple systems.

Block Implementation Specification — Clang 10 documentation

    http://clang.llvm.org/docs/Block-ABI-Apple.html
    Block Implementation Specification ... are performed upon a referencing Block. At the “C” level only variables that are of type Block or ones that have __attribute__ ... Under normal circumstances the compiler uses the Objective-C runtime helper support functions objc_assign_weak and objc_read_weak.

LLVM Support — Chapel Documentation 1.20

    https://chapel-lang.org/docs/technotes/llvm.html
    extern block support (see C Interoperability).This feature uses the clang parser. Note that it is not necessary to use the LLVM code generator in order to use extern block support.; Experimental LLVM code generator. The --llvm flag activates the LLVM code generator. Note that by default, a Chapel compiler built with LLVM support still uses the C backend.

Clang 9.0.0 Release Notes — Clang 9 documentation

    https://releases.llvm.org/9.0.0/tools/clang/docs/ReleaseNotes.html
    C Language Changes in Clang ¶. The __FILE_NAME__ macro has been added as a Clang specific extension supported in all C-family languages. This macro is similar to __FILE__ except it will always provide the last path component when possible.; Initial support for asm goto statements (a GNU C extension) has been added for control flow from inline assembly to labels.

Disable all optimizations on a LLVM basic block

    https://stackoverflow.com/questions/43909630/disable-all-optimizations-on-a-llvm-basic-block
    Disable all optimizations on a LLVM basic block. Is there any way to disable ALL optimizations and/or modifications on a LLVM basic block, so that the code generated for the basic block, at the assembly/binary level, will correspond to exactly the instructions within …

LLVM: include/llvm/IR/BasicBlock.h Source File

    https://llvm.org/doxygen/BasicBlock_8h_source.html
    44 /// This represents a single basic block in LLVM. A basic block is simply a. 45 ... 349 /// Methods for support type inquiry through isa, cast, and dyn_cast. 350 ...

LLVM: llvm::BlockAddress Class Reference

    https://llvm.org/doxygen/classllvm_1_1BlockAddress.html
    If C is a constant integer then return its value, otherwise C must be a vector of constant integers, all equal, and the common value is returned. More... void destroyConstant Called if some element of this constant is no longer valid. More... void handleOperandChange (Value *, Value *)

YAML: Add support for literal block scalar I/O ...

    https://github.com/Microsoft/llvm/commit/29a3c1d580dad764452c8d448f2e2ae1c90f0674
    YAML: Add support for literal block scalar I/O. This commit gives the users of the YAML Traits I/O library the ability to serialize scalars using the YAML literal block scalar notation by allowing them to implement a specialization of the `BlockScalarTraits` struct for their custom types.



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