736 papers · page 37 of 37
Memory access has proven to be one of the bottlenecks in modern architectures. Improving memory locality and eliminating the amount of memory access can help release this bottleneck. We present a method for link-time profile-based optimization by reordering the global data of the…
As current trends in software development move toward more complex object-oriented programming, inlining has become a vital optimization that provides substantial performance improvements to C++ and Java programs. Yet, the aggressiveness of the inlining algorithm must be carefull…
We present a new integrated prepass scheduling (IPS) algorithm for a Java just-in-time (JIT) compiler which integrates register minimization into list scheduling. We use backtracking in the list scheduling when we have used up all the available registers. To reduce the overhead o…
Run-time code generation is a well-known technique for improving the efficiency of programs by exploiting dynamic information. Unfortunately, the difficulty of constructing run-time code-generators has hampered their widespread use. We describe Jumbo, a tool for easily creating r…
A dynamic binary translation system for a co-designed virtual machine is described and evaluated. The underlying hardware directly executes an accumulator-oriented instruction set that exposes instruction dependence chains (strands) to a distributed microarchitecture containing a…
In this paper we describe a novel execution environment for Java programs that substantially improves execution performance by incorporating both on-line and off-line profile information to guide dynamic optimization. By using both types of profile collection techniques, we are a…
The pervasive use of pointers with complicated patterns in C programs often constrains compiler alias analysis to yield conservative register allocation and promotion. Speculative register promotion with hardware support has the potential to more aggressively promote memory refer…
We present METRIC, an environment for determining memory inefficiencies by examining data traces. METRIC is designed to alter the performance behavior of applications that are mostly constrained by their latency to resolve memory references. We make four primary contributions. Fi…
Profile-based optimization has been studied extensively. Numerous papers and real systems have shown substantial improvements. However, most of these papers have been limited to either branch prediction or instruction cache performance. Also, most of these papers have looked at s…
Software dynamic translation (SDT) is a technology that permits the modification of an executing program's instructions. In recent years, SDT has received increased attention, from both industry and academia, as a feasible and effective approach to solving a variety of significan…
The Intel/spl reg/ Itanium/spl reg/ architecture contains a number of innovative compiler-controllable features designed to exploit instruction level parallelism. New code generation and optimization techniques are critical to the application of these features to improve processo…
Predicated execution enables the removal of branches wherein segments of branching code are converted into straight-line segments of conditional operations. An important, but generally ignored side effect of this transformation is that the compiler must assign distinct resources …
Modern processors perform dynamic scheduling to achieve better utilization of execution resources. A schedule created at run-time is often better than one created at compile-time as it can dynamically adapt to specific events encountered at execution-time. In this paper, we exami…
HP-UX compilers inline mathematical functions for Itanium processor family (IPF) systems to improve throughput 4X-8X versus external library calls, achieving speeds comparable to highly tuned vector functions, without requiring the user to code for a vector interface and without …
To meet the demands of modern architectures, optimizing compilers must incorporate an ever larger number of increasingly complex transformation algorithms. Since code transformations may often degrade performance or interfere with subsequent transformations, compilers employ pred…
Given the high cost of producing software, development of technology for prevention of software piracy is important for the software industry. In this paper we present a novel approach for preventing the creation of unauthorized copies of software. Our approach splits software mo…