./lang/llvm, Low Level Virtual Machine compiler infrastructure

[ CVSweb ] [ Homepage ] [ RSS ] [ Required by ] [ Add to tracker ]


Branch: CURRENT, Version: 4.0.0nb1, Package name: llvm-4.0.0nb1, Maintainer: pkgsrc-users

Low Level Virtual Machine (LLVM) is:

A compilation strategy designed to enable effective program optimization across
the entire lifetime of a program. LLVM supports effective optimization at
compile time, link-time (particularly interprocedural), run-time and offline
(i.e., after software is installed), while remaining transparent to developers
and maintaining compatibility with existing build scripts.

A virtual instruction set - LLVM is a low-level object code representation that
uses simple RISC-like instructions, but provides rich, language-independent,
type information and dataflow (SSA) information about operands. This combination
enables sophisticated transformations on object code, while remaining
light-weight enough to be attached to the executable. This combination is key to
allowing link-time, run-time, and offline transformations.

A compiler infrastructure - LLVM is also a collection of source code that
implements the language and compilation strategy. The primary components of the
LLVM infrastructure are a GCC-based C & C++ front-end, a link-time optimization
framework with a growing set of global and interprocedural analyses and
transformations, static back-ends for the X86, X86-64, PowerPC 32/64, ARM,
Thumb, IA-64, Alpha and SPARC architectures, a back-end which emits portable C
code, and a Just-In-Time compiler for X86, X86-64, PowerPC 32/64 processors.


Required to run:
[lang/gcc48-libs]

Required to build:
[lang/python27] [lang/gcc48] [pkgtools/cwrappers]

Package options: llvm-target-aarch64, llvm-target-amdgpu, llvm-target-arm, llvm-target-bpf, llvm-target-hexagon, llvm-target-mips, llvm-target-msp430, llvm-target-nvptx, llvm-target-powerpc, llvm-target-sparc, llvm-target-systemz, llvm-target-x86, llvm-target-xcore

Master sites:

SHA1: aee4524e2407f9fe5afc6f70c753180b907011d0
RMD160: 468ae2502ba523b35c5e8340724ddaa50b31ccb5
Filesize: 20523.77 KB

Version history: (Expand)


CVS history: (Expand)


   2017-03-19 20:01:48 by Adam Ciarcinski | Files touched by this commit (6)
Log message:
Create and use shared library libLLVM; fix install_name for shared object on Darwin.
   2017-03-17 23:38:18 by Adam Ciarcinski | Files touched by this commit (38)
Log message:
LLVM 4.0.0:
The minimum compiler version required for building LLVM has been raised to 4.8 \ 
for GCC and 2015 for Visual Studio.
The C API functions LLVMAddFunctionAttr, LLVMGetFunctionAttr, \ 
LLVMRemoveFunctionAttr, LLVMAddAttribute, LLVMRemoveAttribute, LLVMGetAttribute, \ 
LLVMAddInstrAttribute and LLVMRemoveInstrAttribute have been removed.
The C API enum LLVMAttribute has been deleted.
The definition and uses of LLVM_ATRIBUTE_UNUSED_RESULT in the LLVM source were \ 
replaced with LLVM_NODISCARD, which matches the C++17 [[nodiscard]] semantics \ 
rather than gcc’s __attribute__((warn_unused_result)).
The Timer related APIs now expect a Name and Description. When upgrading code \ 
the previously used names should become descriptions and a short name in the \ 
style of a programming language identifier should be added.
LLVM now handles invariant.group across different basic blocks, which makes it \ 
possible to devirtualize virtual calls inside loops.
The aggressive dead code elimination phase (“adce”) now removes branches \ 
which do not effect program behavior. Loops are retained by default since they \ 
may be infinite but these can also be removed with LLVM option \ 
-adce-remove-loops when the loop body otherwise has no live operations.
The llvm-cov tool can now export coverage data as json. Its html output mode has \ 
also improved.
   2017-01-16 22:56:35 by Brook Milligan | Files touched by this commit (2)
Log message:
Clean up definition of libtool on Darwin.

The previous commit ended up with two different specifications for libtool
on Darwin.  One was the OS-specific version of CMAKE_ARGS introduced in the
previous commit; the other was inside a conditional to detect Darwin introduced \ 
in the commit prior.  The former seems cleaner so it has been left.
   2017-01-16 18:26:47 by Brook Milligan | Files touched by this commit (3)
Log message:
Use the system-specific libtool on Darwin.

This fixes bugs relating to unrecognized libtool options on Darwin.
   2017-01-05 12:54:32 by Adam Ciarcinski | Files touched by this commit (16) | Package updated
Log message:
Changes 3.9.1:
The LLVMContext gains a new runtime check (see LLVMContext::discardValueNames()) \ 
that can be set to discard Value names (other than GlobalValue). This is \ 
intended to be used in release builds by clients that are interested in saving \ 
CPU/memory as much as possible.
There is no longer a “global context” available in LLVM, except for the C API.
The autoconf build system has been removed in favor of CMake. LLVM 3.9 requires \ 
CMake 3.4.3 or later to build. For information about using CMake please see the \ 
documentation on Building LLVM with CMake. For information about the CMake \ 
language there is also a CMake Primer document available.
C API functions LLVMParseBitcode, LLVMParseBitcodeInContext, \ 
LLVMGetBitcodeModuleInContext and LLVMGetBitcodeModule having been removed. \ 
LLVMGetTargetMachineData has been removed (use LLVMGetDataLayout instead).
The C API function LLVMLinkModules has been removed.
The C API function LLVMAddTargetData has been removed.
The C API function LLVMGetDataLayout is deprecated in favor of LLVMGetDataLayoutStr.
The C API enum LLVMAttribute and associated API is deprecated in favor of the \ 
new LLVMAttributeRef API. The deprecated functions are LLVMAddFunctionAttr, \ 
LLVMAddTargetDependentFunctionAttr, LLVMRemoveFunctionAttr, LLVMGetFunctionAttr, \ 
LLVMAddAttribute, LLVMRemoveAttribute, LLVMGetAttribute, LLVMAddInstrAttribute, \ 
LLVMRemoveInstrAttribute and LLVMSetInstrParamAlignment.
TargetFrameLowering::eliminateCallFramePseudoInstr now returns an iterator to \ 
the next instruction instead of void. Targets that previously did MBB.erase(I); \ 
return; now probably want return MBB.erase(I);.
SelectionDAGISel::Select now returns void. Out-of-tree targets will need to be \ 
updated to replace the argument node and remove any dead nodes in cases where \ 
they currently return an SDNode * from this interface.
Added the MemorySSA analysis, which hopes to replace MemoryDependenceAnalysis. \ 
It should provide higher-quality results than MemDep, and be algorithmically \ 
faster than MemDep. Currently, GVNHoist (which is off by default) makes use of \ 
MemorySSA.
The minimum density for lowering switches with jump tables has been reduced from \ 
40% to 10% for functions which are not marked optsize (that is, compiled with \ 
-Os).
   2017-01-02 01:03:42 by Greg Troxel | Files touched by this commit (1)
Log message:
On i386, use -march=i586 for 64-bit CAS

This matches tnn's change to lang/libLLVM.  No PKGREVISION; no change
on !i386 and on i386 this did not build before.
   2016-12-18 00:28:35 by Joerg Sonnenberger | Files touched by this commit (4)
Log message:
Explicitly build LLVM projects with -std=c++11, it doesn't get detected
automatically in all cases.
   2016-11-15 17:41:36 by Thomas Klausner | Files touched by this commit (1)
Log message:
Add devel/include-what-you-use to comment and sort.