vbcc is a portable and retargetable ANSI C compiler. It supports C89 (ISO/IEC 9899:1989) as well as parts of C99 (ISO/IEC 9899:1999).

It is divided into two parts. One is target-independent and the other is target-dependent. vbcc provides complete abstraction of host-arithmetic and target-arithmetic. It fully supports cross-compiling for 8-bit, 16-bit, 32-bit and 64-bit architectures.

Embedded systems are supported by features such as different pointer sizes, ROM-able code, inline assembly, bit-types, interrupt handlers, section attributes, and stack usage calculation (depending on the backend).

vbcc supports the following backends, with different degrees of maturity: 68k, ColdFire, PowerPC, 6502, 65C02, 65C816 (in native mode), VideoCore, 80x86 (386 and above), Alpha, C16x/ST10, 6809/6309/68HC12, and Z-machine.

The compiler itself can run on all common operating systems, including Windows, Mac OS X, and Unix/Linux.

Optimizations

The compiler provides a large set of high-level optimizations as well as target-specific optimizations to produce faster or smaller code. It is also able to optimize across functions and modules. Target-independent optimizations supported by vbcc include:

• cross-module function inlining

• partial inlining of recursive functions

• interprocedural dataflow analysis

• interprocedural register allocation

• register allocation for global variables

• global common subexpression elimination

• global constant propagation

• global copy propagation

• dead code elimination

• alias analysis

• loop unrolling

• induction variable elimination

• loop-invariant code motion

• loop reversal

References

External links

• Dr. Volker Barthelmann´s Compiler Page

• vbcc - ISO/ANSI-C Compiler

macOS

• Atari cross development

• Amiga cross development

• Windows cross development

Linux

• Amiga cross development