The x86 Open64 compiler system is a high performance, production quality code generation tool designed for high performance parallel computing workloads. The x86 Open64 environment provides the developer the essential choices when building and optimizing C, C++, and Fortran applications targeting 32-bit and 64-bit Linux platforms. The x86 Open64 compiler system offers a high level of advanced optimizations, multi-threading, and processor support that includes global optimization, vectorization, interprocedural analysis, feedback directed optimizations, loop transformations, and code generation which extracts the optimal performance from each x86 processor core. The x86 Open64 Compiler Suite simplifies and accelerates development and tuning for x86, AMD64 (AMD® x86-64 Architecture), and Intel64 (Intel® x86-64 Architecture) applications. The x86 Open64 compilers create a strong foundation for building robust, high performance parallel code through MPI, OpenMP®, and auto-parallelization along with highly optimized libraries*. SCROLL DOWN OR CLICK HERE TO GO TO THE DOWNLOADS TABLE.
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* See Release Notes regarding parallel code generation
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Click the Download button in the upper left-hand corner of this page to start the download; Do one of the following: To start the installation immediately, click Run. To save the download to your computer for installation at a later time, click Save. To cancel the installation, click Cancel. Follow the instructions given by the installer. Download Article. Download Introduction to x64 Assembly PDF 303KB Introduction. For years, PC programmers used x86 assembly to write performance-critical code. However, 32-bit PCs are being replaced with 64-bit ones, and the underlying assembly code has changed. This white paper is an introduction to x64 assembly.
v4.5.2.1: (Patch release) – Includes fix for a corner case in array remapping triggered with -mso flag
New in v4.5.2:
- Support for AMD Opteron Family 15h processor ('Piledriver' core)
- 64 bit build of Open64 compiler
- Further incremental improvements to advanced vectorization capability
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- Support for common AVX, XOP, FMA3, FMA4, BMI, TBM, F16C intrinsic
- Improved performance and functionality of LNO optimization
- Further improvements to optimizer and code generation
- Merged sources from Open64 community trunk
- Extended platform support, including SLES 11 sp2, RHEL 6.3
The x86 Open64 Compiler Suite provides the following features to help you generate high-performance multi-threaded applications for multi-core platforms
- Extended proactive loop optimizations for improved loop-fusion, if-merging, loop-unswitching, loop-interchange and if-condition pre-computation.
- Added support for partial vectorization(simdization). We now have two slightly different approaches which may help different cases. –LNO:simd=3 could help certain cases and could use -LNO:psimd_iso=ON and -LNO:psimd_iso_unroll=ON which could benefit other cases
- Added new peep-hole optimizations including improve sign extension codes, register, usage etc.
- Improvements to dispatch scheduling in terms of alignment, padding, instruction size etc. You can enable this using the flag -CG:dsched
- Improved performance of certain class of intrinsic such as mm_set* through better handling of CONSTRUCTORs and CONSTs
- Added support to unconditionally generate non-temporal stores.
- General correctness improvements including bug fixes for problems in handling BOZ constants, constant folding in Fortran data statements, better handling of floating point rules, handling complex division overflows etc.
- You can enable this new instructions in Piledriver core using the -march=bdver2. Alternately you can pick and choose the ISA to be enabled using -mfma (for FMA3), -mfma4, -mbmi, -mtbm flags
- Please refer to Release Notes for further details
Platform Highlights
- x86 32-bit and x86 64-bit code generation
- Large File support on 32-bit systems
- Byte-swapping I/O
- Vector and scalar SSE/SSE2/SSE3/SSE4.1/SSE4.2/AVX/XOP/FMA4/FMA3 code generation
- OpenMP 2.5 for shared memory models
- MPICH2/OpenMPI for distributed and shared memory models
- Optimized AMD Core Math Library (ACML)
Language Standards
ANSI C99, ISO C++98
- Conforms to ISO/IEC 9899: 1999, Programming Languages – C standard
- Conforms to ISO/IEC 14882:1998(E), Programming Languages – C++ standard
Fortran 77, 90, 95
- Conforms to ISO/IEC 1539-1: 1997 Programming Languages – Fortran
Inter-language calling IEEE 754 floating point support
Optimization Highlights
- Global optimizations, e.g.
- Partial redundancy elimination
- Constant propagation and code motion
- Strength reduction and expression simplification
- Dead code elimination and common sub-expression elimination
- Loop-nest optimizations(enabled with ‘-O3'), e.g.
- Loop fusion and distribution
- Loop interchange and cache locality optimization
- Vectorization for SSE* and AVX code generation
- Software data pre-fetching
- Code generation and optimizations, e.g.
- Advanced register allocation
- Loop unrolling
- Instruction selection and scheduling
- Peephole optimizations
Optimization Highlights .. cont.
- Feedback-directed optimizations(enabled with ‘-fb_create/-fb_opt'), e.g.
- Code layout
- Feedback-directed function inlining and de-virtualization
- Feedback-guided register spilling
- Value specialization
- Inter-procedural analysis and optimization(enabled with ‘-ipa'), e.g.
- Function inlining and cloning
- Inter-procedural alias analysis
- Data re-layout optimizations for structure members
- Inter-procedural constant propagation and dead code elimination
- Multi-core scalability optimizations (enabled with ‘-mso')
Documentation
- x86 Open64 v4.5.2.1 Release Notes and Readme
- Open64 Compiler Developer Guide – This paper was presented at the 16th IEEE Symposium on High-Performance Computer Architecture (2010) and describes the compiler Intermediate Representation, WHIRL.
Related Resources
Open64 is an open source, optimizing compiler for x86-32 and x86-64 architectures as well as many other micro-architectures. It derives from the Silicon Graphics, Inc. compilers for the MIPS processor, called MIPSPro. It was released under the GNU GPL in 2000. Open64 supports C/C++ and Fortran 77/95, as well as the shared memory programming model OpenMP. The compiler can perform high-quality interprocedural analysis, data-flow analysis, data dependence analysis, and array region analysis.
- To learn more, visit Open64.
Open64 leverages many aspects from the GNU Compiler Collection (GCC). Built within the Open64 framework is the gcc/g++ front-end which augments the gnu-compatibility of the Open64 compiler system. The Open64 compiler also relies on the GNU collection of binary tools (i.e. binutils) and C Library (i.e. glibc).
- For more information regarding the GNU preprocessors and binutils, visit GNU.org.
Turbo Assembler For Windows 10
AMD x86 Open64 Team Insights
This video features AMD's Open64 Compiler Team talking about Open64 origins, unique features of this compiler, such as multi-core scalability optimizations and other important optimization flags you should not miss such as loop nest optimizations (LNO), and interprocedural analysis (IPA) to name a few. Many thanks to the team for giving us this insight directly! (14:23) Watch the video now. Brother newsoft cd labeler.
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Downloads
Platform Highlights
- x86 32-bit and x86 64-bit code generation
- Large File support on 32-bit systems
- Byte-swapping I/O
- Vector and scalar SSE/SSE2/SSE3/SSE4.1/SSE4.2/AVX/XOP/FMA4/FMA3 code generation
- OpenMP 2.5 for shared memory models
- MPICH2/OpenMPI for distributed and shared memory models
- Optimized AMD Core Math Library (ACML)
Language Standards
ANSI C99, ISO C++98
- Conforms to ISO/IEC 9899: 1999, Programming Languages – C standard
- Conforms to ISO/IEC 14882:1998(E), Programming Languages – C++ standard
Fortran 77, 90, 95
- Conforms to ISO/IEC 1539-1: 1997 Programming Languages – Fortran
Inter-language calling IEEE 754 floating point support
Optimization Highlights
- Global optimizations, e.g.
- Partial redundancy elimination
- Constant propagation and code motion
- Strength reduction and expression simplification
- Dead code elimination and common sub-expression elimination
- Loop-nest optimizations(enabled with ‘-O3'), e.g.
- Loop fusion and distribution
- Loop interchange and cache locality optimization
- Vectorization for SSE* and AVX code generation
- Software data pre-fetching
- Code generation and optimizations, e.g.
- Advanced register allocation
- Loop unrolling
- Instruction selection and scheduling
- Peephole optimizations
Optimization Highlights .. cont.
- Feedback-directed optimizations(enabled with ‘-fb_create/-fb_opt'), e.g.
- Code layout
- Feedback-directed function inlining and de-virtualization
- Feedback-guided register spilling
- Value specialization
- Inter-procedural analysis and optimization(enabled with ‘-ipa'), e.g.
- Function inlining and cloning
- Inter-procedural alias analysis
- Data re-layout optimizations for structure members
- Inter-procedural constant propagation and dead code elimination
- Multi-core scalability optimizations (enabled with ‘-mso')
Documentation
- x86 Open64 v4.5.2.1 Release Notes and Readme
- Open64 Compiler Developer Guide – This paper was presented at the 16th IEEE Symposium on High-Performance Computer Architecture (2010) and describes the compiler Intermediate Representation, WHIRL.
Related Resources
Open64 is an open source, optimizing compiler for x86-32 and x86-64 architectures as well as many other micro-architectures. It derives from the Silicon Graphics, Inc. compilers for the MIPS processor, called MIPSPro. It was released under the GNU GPL in 2000. Open64 supports C/C++ and Fortran 77/95, as well as the shared memory programming model OpenMP. The compiler can perform high-quality interprocedural analysis, data-flow analysis, data dependence analysis, and array region analysis.
- To learn more, visit Open64.
Open64 leverages many aspects from the GNU Compiler Collection (GCC). Built within the Open64 framework is the gcc/g++ front-end which augments the gnu-compatibility of the Open64 compiler system. The Open64 compiler also relies on the GNU collection of binary tools (i.e. binutils) and C Library (i.e. glibc).
- For more information regarding the GNU preprocessors and binutils, visit GNU.org.
Turbo Assembler For Windows 10
AMD x86 Open64 Team Insights
This video features AMD's Open64 Compiler Team talking about Open64 origins, unique features of this compiler, such as multi-core scalability optimizations and other important optimization flags you should not miss such as loop nest optimizations (LNO), and interprocedural analysis (IPA) to name a few. Many thanks to the team for giving us this insight directly! (14:23) Watch the video now. Brother newsoft cd labeler.
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Downloads
The x86 Open64 Compilers for Linux provides C, C++, and Fortran development tools. In addition to the software download, you can obtain guidance on installation, usage, configuration, and application development advice. Please read the Installation Prerequisites and Guidelines which provides instructions on how to configure your environment and install the x86 Open64 compilers.
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