Compiler optimization

The compiler is the primary interface to the processor. High level languages like Fortran and C are translated into the level instructions that can be executed on the processor. Compiler optimization and instruction generation decisions can be influenced with compiler switches. These switches may correspond directly to individual modules for optimization, or influence settings of several modules. The compiler performs many optimizations on the source code based on various assumptions about the program. Typical assumptions are ... 

Genetic algorithms are typically used on function optimization problems, where they are used to calculate which input yields the maximum (or minimum) value. However, they have also been put to use on a wide variety of problems. These range from game-playing, where the genotype encodes a series of moves, to compiler optimization, in which case each gene is an optimization to be applied to a piece of code. 

C. Polychronopoulos. Compiler optimizations for enhancing parallelism and their impact on the architecture design. IEEE Trans, on Computers, 37, number 8, pages 991-1004, Aug 1988. 

Compiler optimization is the process by which the compiler rewrites the internal representation of a program into a form that yields a more efficient target-language program. The word optimization is a misnomer, since the compiler cannot guarantee optimality for the resulting code. In practice, optimizers apply a fixed sequence of analyses and transformations that the compiler writer believes will produce better code. 

I 128-bit ope rations in software with compiler optimizations I 128-bit operations using sse extensions, llvm-compiled with optimizations... 

The results of fault injection experiments depend on several parameters such as the inputs processed by a program [14] [15], level of compiler optimization [16], fault model [13], implementation of a program, etc. In this paper we study the impact of single bit-flip and double bit-flip fault models. 

Our future research will also encompass comparative studies with different compiler optimizations, hardware platforms, and different programming languages. Another important part of this work is to extend our study with experiments on target programs that are equipped with software-implemented hardware fault tolerance (SIHFT) techniques. 

Demertzi, M., Annavaram, M., Hall, M. Analyzing the Effects of Compiler Optimizations on Application ReUabUity. In IEEE InkSymp. on Workload Characterization (IISWC), Austin, TX (2011)... 

Behavioral transformations identify the parallelism in the HardwareC description using compiler optimization techniques. They also permit the designer to change the procedure calling hierarchy to conux)l the granularity of hardware sharing in subsequent synthesis steps. The BIF is used as the underlying representation for all transformations. 

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