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Parrot Intermediate Representation
The Parrot intermediate representation (PIR), previously called Intermediate code (IMC), is one of the two assembly languages for the Parrot virtual machine. The other is Parrot assembly language or PASM. Compared to PASM, PIR exists at a slightly higher abstraction layer, and provides temporary registers and named registers, simplifying code generation. While Parrot is still evolving, it is currently being used in many different capacities, and has undergone several releases. Overview PIR provides a set of abstractions that allow the programmer to ignore certain redundancies in the Parrot bytecode and quickly write code that adheres to the complexities of Parrot, such as the calling conventions. Abstractions PIR provides both type abstraction and polymorphism to some degree. For example, the "+" operator can be used with int, num or both: .local int a .local num b a = 1 b = 1.1 .local num c c = a + b Calling conventions The calling conventions in Parrot are complex, but a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Assembly Language
In computer programming, assembly language (or assembler language, or symbolic machine code), often referred to simply as Assembly and commonly abbreviated as ASM or asm, is any low-level programming language with a very strong correspondence between the instructions in the language and the architecture's machine code instructions. Assembly language usually has one statement per machine instruction (1:1), but constants, comments, assembler directives, symbolic labels of, e.g., memory locations, registers, and macros are generally also supported. The first assembly code in which a language is used to represent machine code instructions is found in Kathleen and Andrew Donald Booth's 1947 work, ''Coding for A.R.C.''. Assembly code is converted into executable machine code by a utility program referred to as an '' assembler''. The term "assembler" is generally attributed to Wilkes, Wheeler and Gill in their 1951 book '' The Preparation of Programs for an Electronic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |