Optimal Instruction Scheduling and Register Allocation for Multiple-issue Processors

Optimal Instruction Scheduling and Register Allocation for Multiple-issue Processors PDF Author: Waleed M. Meleis
Publisher:
ISBN:
Category :
Languages : en
Pages : 192

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Optimal Instruction Scheduling and Register Allocation for Multiple-issue Processors

Optimal Instruction Scheduling and Register Allocation for Multiple-issue Processors PDF Author: Waleed M. Meleis
Publisher:
ISBN:
Category :
Languages : en
Pages : 192

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Book Description


Optimal Local Register Allocation for a Multiple-issue Machine

Optimal Local Register Allocation for a Multiple-issue Machine PDF Author: University of Michigan. Dept. of Electrical Engineering and Computer Science. Computer Science and Engineering Division
Publisher:
ISBN:
Category : Computer architecture
Languages : en
Pages : 23

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Abstract: "This paper presents an algorithm that allocates registers optimally for straight-line code running on a generic multi-issue computer. On such a machine, an optimal register allocation is one that minimizes the number of issue slots that the code requires. Optimal spill selection and load/store placement are used to minimize the number of additional issue slots needed, given a schedule for the non-memory reference instructions and a fixed number of available physical registers. The generic multi-issue machine model closely models the operation of vector and VLIW processors, and could be extended to model super-scalar processors. The algorithm uses dynamic programming to search the state space of plausible register allocations; implicit and explicit state pruning are used to make the problem tractable. The optimal allocation produced by the algorithm for a substantial example is presented."

Constraint Programming Techniques for Optimal Instruction Scheduling

Constraint Programming Techniques for Optimal Instruction Scheduling PDF Author: Abid Muslim Malik
Publisher:
ISBN: 9780494433119
Category :
Languages : en
Pages : 133

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Book Description
Modern processors have multiple pipelined functional units and can issue more than one instruction per clock cycle. This puts great pressure on the instruction scheduling phase in a compiler to expose maximum instruction level parallelism. Basic blocks and superblocks are commonly used regions of code in a program for instruction scheduling. Instruction scheduling coupled with register allocation is also a well studied problem to produce better machine code. Scheduling basic blocks and superblocks optimally with or with out register allocation is NP-complete, and is done sub-optimally in production compilers using heuristic approaches. In this thesis, I present a constraint programming approach to the superblock and basic block instruction scheduling problems for both idealized and realistic architectures. Basic block scheduling with register allocation with no spilling allowed is also considered.

Loop Optimization Techniques on Multi-issue Architectures

Loop Optimization Techniques on Multi-issue Architectures PDF Author: Dan Richard Kaiser
Publisher:
ISBN:
Category : Compilers (Computer programs)
Languages : en
Pages : 396

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Book Description
Abstract: "This work examines the interaction of compiler scheduling techniques with processor features such as the instruction issue policy. Scheduling techniques designed to exploit instruction level parallelism are employed to schedule instructions for a set of multi-issue architectures. A compiler is developed which supports block scheduling, loop unrolling, and software pipelining for a range of target architectures. The compiler supports aggressive loop optimizations such as induction variable detection and strength reduction, and code hoisting. A set of machine configurations based on the MIPS R3000 ISA are simulated, allowing the performance of the combined compiler-processor to be studied. The Aurora III, a prototype superscalar processor, is used as a case study for the interaction of compiler scheduling techniques with processor architecture. Our results show that the scheduling technique chosen for the compiler has a significant impact on the overall system performance and can even change the rank ordering when comparing the performance of VLIW, DAE and superscalar architectures. Our results further show that, while significant, the performance effects of the instruction issue policy may not be as large as the effects of other processor features, which may be less costly to implement, such as 64 bit wide data paths or store buffers."

The Compiler Design Handbook

The Compiler Design Handbook PDF Author: Y.N. Srikant
Publisher: CRC Press
ISBN: 142004057X
Category : Computers
Languages : en
Pages : 930

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Book Description
The widespread use of object-oriented languages and Internet security concerns are just the beginning. Add embedded systems, multiple memory banks, highly pipelined units operating in parallel, and a host of other advances and it becomes clear that current and future computer architectures pose immense challenges to compiler designers-challenges th

Optimal Global Instruction Scheduling Using Enumeration

Optimal Global Instruction Scheduling Using Enumeration PDF Author: Ghassan Omar Shobaki
Publisher:
ISBN:
Category :
Languages : en
Pages : 296

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Readings in Computer Architecture

Readings in Computer Architecture PDF Author: Mark D. Hill
Publisher: Gulf Professional Publishing
ISBN: 9781558605398
Category : Computers
Languages : en
Pages : 740

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Book Description
Offering a carefully reviewed selection of over 50 papers illustrating the breadth and depth of computer architecture, this text includes insightful introductions to guide readers through the primary sources.

Combining Register Allocation and Instruction Scheduling

Combining Register Allocation and Instruction Scheduling PDF Author: Stanford University. Computer Science Department
Publisher:
ISBN:
Category :
Languages : en
Pages : 17

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Book Description
We formulate combined register allocation and instruction scheduling within a basic block as a single optimization problem, with an objective cost function that more directly captures the primary measure of interest in code optimization --- the completion time of the last instruction. We show that although a simple instance of the combined problem is NP-hard, the combined problem is much easier to solve approximately than graph coloring, which is a common formulation used for the register allocation phase in phase-ordered solutions.

Implementing and Exploiting Static Speculation on Multiple Instruction Issue Processors

Implementing and Exploiting Static Speculation on Multiple Instruction Issue Processors PDF Author: Mayan Moudgill
Publisher:
ISBN:
Category :
Languages : en
Pages : 322

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Book Description


The Compiler Design Handbook

The Compiler Design Handbook PDF Author: Y.N. Srikant
Publisher: CRC Press
ISBN: 1420043838
Category : Computers
Languages : en
Pages : 784

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Book Description
Today’s embedded devices and sensor networks are becoming more and more sophisticated, requiring more efficient and highly flexible compilers. Engineers are discovering that many of the compilers in use today are ill-suited to meet the demands of more advanced computer architectures. Updated to include the latest techniques, The Compiler Design Handbook, Second Edition offers a unique opportunity for designers and researchers to update their knowledge, refine their skills, and prepare for emerging innovations. The completely revised handbook includes 14 new chapters addressing topics such as worst case execution time estimation, garbage collection, and energy aware compilation. The editors take special care to consider the growing proliferation of embedded devices, as well as the need for efficient techniques to debug faulty code. New contributors provide additional insight to chapters on register allocation, software pipelining, instruction scheduling, and type systems. Written by top researchers and designers from around the world, The Compiler Design Handbook, Second Edition gives designers the opportunity to incorporate and develop innovative techniques for optimization and code generation.