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LLVM can accept the IR from the GNU Compiler Collection (GCC) toolchain, allowing it to be used with a wide array of extant compiler front-ends written for that project. LLVM can also be built with gcc after version 7.5. [37] LLVM can also generate relocatable machine code at compile-time or link-time or even binary machine code at runtime.
In late 2000, Lattner joined the University of Illinois at Urbana-Champaign as a research assistant and M.Sc. student. While working with Vikram Adve, he designed and began implementing LLVM, an innovative infrastructure for optimizing compilers, which was the subject of his 2002 Master of Science thesis. [7]
Like GCC, LLVM also targets some IRs meant for direct distribution, including Google's PNaCl IR and SPIR. A further development within LLVM is the use of Multi-Level Intermediate Representation with the potential to generate code for different heterogeneous targets, and to combine the outputs of different compilers. [6]
GCC gets a new Optimizer Framework. An article about GCC's use of SSA and how it improves over older IRs. The SSA Bibliography. Extensive catalogue of SSA research papers. Zadeck, F. Kenneth. "The Development of Static Single Assignment Form", December 2007 talk on the origins of SSA.
Until version 12.0.0, the instruction scheduling in LLVM/Clang could only accept a -march (called target-cpu in LLVM parlance) switch for both instruction set and scheduling. Version 12 adds support for -mtune (tune-cpu) for x86 only. [3] Sources of information on latency and port usage include: GCC and LLVM;
Yes, llvm (llvm-gcc and gcc deprecated) Yes C#. IDE License Developer Latest stable release Windows Linux macOS Other platforms; Microsoft Visual Studio: Proprietary ...
GPLv3 with GCC Runtime Library Exception: New major release once per year LLVM C++ Standard Library LLVM Developer Group: libc++ Apache License 2.0 with LLVM Exceptions: Every 2 weeks NVIDIA C++ Standard Library Nvidia: libcudacxx Apache License 2.0 with LLVM Exceptions: September 4, 2024; 4 months ago () Microsoft C++ Standard Library
However, in LTO as implemented by the GNU Compiler Collection (GCC) and LLVM, the compiler is able to dump its intermediate representation (IR), i.e. GIMPLE bytecode or LLVM bitcode, respectively, so that all the different compilation units that will go to make up a single executable can be optimized as a single module when the link finally ...