C Optimizing Compilers

C Optimizing Compilers
Green Hills Optimizing C Compilers
The Green Hills™ Optimizing C Compilers conform fully to ANSI X3.159-1989 Standard C (ISO/IEC 9899 and FIPS PUB 160). Green Hills C Compilers consist of a Language-Specific Front-End, a Global Optimizer, and a Target-Specific Optimizer and Code Generator. All Green Hills Compilers use the same Global Optimizer regardless of language or target, and the same Target-Specific Optimizers and Code Generators regardless of language. Optimizations may be optionally weighted for either code speed or minimum size.

Tool Chain
The Green Hills Tool Chain consists of a Macro Assembler, Librarian, Linker and Utility Programs. The Macro Assembler assembles compiler-generated or user-coded assembly language files into object files. The Librarian manages object file libraries. The Linker links object files and object file libraries into executable programs.

Validation
Green Hills C Compilers are validated with thousands of tests before release:

 
Plum Hall Validation Test Suites test for ANSI C conformance.
Perennial Validations test for UNIX C and ANSI C conformance.
MetaWare C Test Suite verifies tricky or obscure ANSI C conformance.
The Green Hills Autotest Program generates 80,000 different short, self-checking C programs, with most combinations of C statements, operators, and datatypes to ensure a robust software release.
C Compiler Options
 

 

 

C Versions
Green Hills Optimizing C Compilers support five dialects of the C programming language:
 
Strict ANSI - Strict ANSI mode is 100% compliant with the ANSI X3.159-1989 standard with all of the restrictions enforced.
Permissive ANSI - Sets the compiler in Permissive ANSI compatibility mode. All of the features of the ANSI standard are enforced, without some of the restrictions.
Transition Mode - This mode allows existing programs written in K&R C to make use of certain features of ANSI C. In particular, function prototypes and the keywords const, signed, and volatile are supported, along with all of the features of K+R mode.
MISRA C - Provides automated enforcement of MISRA C programming guidelines.
K + R - For C source files, interpret the source code as the C version documented in Kernigham & Ritchie, first edition, and compatible with the Portable C.
Gnu C - Many Gnu C language extensions are optionally accepted.

 

  Back to GH Home Page   Back to Testech Home Page   Compiler     RTOS   Emulator/Debugging