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Constant folding is the process of recognizing and evaluating constant expressions at compile time rather than computing them at runtime. Terms in constant expressions are typically simple literals, such as the integer literal 2, but they may also be variables whose values are known at compile time.
In compiler optimization, register allocation is the process of assigning local automatic variables and expression results to a limited number of processor registers. Register allocation can happen over a basic block ( local register allocation ), over a whole function/ procedure ( global register allocation ), or across function boundaries ...
The Java language has undergone several changes since JDK 1.0 as well as numerous additions of classes and packages to the standard library.Since J2SE 1.4, the evolution of the Java language has been governed by the Java Community Process (JCP), which uses Java Specification Requests (JSRs) to propose and specify additions and changes to the Java platform.
GraalVM 19.3.0 2019-11-19 Oracle JDK 1.8.0_231, 11.0.5 OpenJDK 1.8.0_232,11.0.5 This release announced the first GraalVM Java SE 11-based builds; added new platforms — Linux AArch64 and experimental Windows x64. This release also added module encapsulation to isolate Graal compiler and Truffle API code from the application code.
Φ functions are not implemented as machine operations on most machines. A compiler can implement a Φ function by inserting "move" operations at the end of every predecessor block. In the example above, the compiler might insert a move from y 1 to y 3 at the end of the middle-left block and a move from y 2 to y 3 at the
The most common form of output from a Java compiler is Java class files containing cross-platform intermediate representation (IR), called Java bytecode. [2] The Java virtual machine (JVM) loads the class files and either interprets the bytecode or just-in-time compiles it to machine code and then possibly optimizes it using dynamic compilation.
Some academic papers use this word to mean the act of compiling the Java bytecode to C [1] or the timing when optimization pipeline are performed. [2] An academic project [ 3 ] uses this word to mean the act of pre-compiling JavaScript to a machine-dependent optimized IR for V8 (JavaScript engine) [ 4 ] and to a machine independent bytecode for ...
make menuconfig is a light load on system resources unlike make xconfig (uses Qt as of version 2.6.31.1, formerly Tk) or make gconfig, which utilizes GTK+. Instead of editing the .config by hand, make menuconfig shows the descriptions of each feature (by pressing the "Help" button while on a menu option), and adds some (primitive in version 2.6 ...