LLVM.jl

Fixes for Windows and OSX.

Major release: remove need for source-build of Julia, but drop support for 0.6

This means that installing LLVM.jl (and consequently CUDAnative.jl, CuArrays.jl, ...) has become much easier. The C++ library that was necessitated a source-build has been merged as part of Julia, but that means dropping support for Julia 0.6.

Until Julia 0.7 is officially released, new features won't be added to LLVM.jl meaning the latest 0.6-compatible version should be compatible with any dependent packages. When BinDeps2 reaches maturity, and can build a Julia-compatible LLVM, we might consider moving the extras library back to LLVM.jl.

Hotfix: the new @asmcall functionality didn't work in combination with precompilation.

• Add Kaleidoscope implementation (thanks @KristofferC!)
• Drop support for Julia 0.5
• Initial Interop submodule for LLVM/Julia interactions

• Fixed support for 0.7
• Simplify build script
• New wrappers (thanks @KristofferC)

• extend and improve iterator interfaces.

required for https://github.com/JuliaGPU/CUDAnative.jl/pull/112

• reconstruct more types and wrap more funtions
• build system fixes

• build: don't rm(force) in catch as it obfuscates stack traces

• bugfix: allow calling alignment on more than only global values
• implement LLVM's bool using a strongly-typed wrapper

• bugfix: package wouldn't get automatically precompiled again after a failed successful build cycle
• features: much better coverage of IRBuilder

• rework build system (NFC, in anticipation of integration with buildbot/CI for prebuilt binaries)
• wrap some additional irbuilder constructs (required for JuliaGPU/CUDAnative.jl#78)

• make it possible to load (& perform very limited testing) when the build failed, ie. when libLLVM isn't available
• improve USE_SYSTEM_LLVM mode (now disallowing calling back into libjulia, and using dlmopen on Linux)
• wrap llvm::User

NFC update: includes special mode for loading LLVM.jl without the build having succeeded (for documentation purposes on Travis). Tag required for CUDAnative.jl documentation.

• Fix compilation on OS X where Julia's -std CFLAG threw off C++ compilation (#26, cc @dlfivefifty)
• Minor wrapper improvements

Hotfix: the upgrade could fail due to loading non-existing variables from a previous ext.jl.

• Julia 0.6 deprecation fixes
• Don't rebuild libllvm_extra or write ext.jl if the underlying LLVM libraries didn't change

Add proper support for LLVM 4.0

Fixes wrong typeassert in build script, preventing installation on Julia 0.6-.