vbcc
| Developer(s) | Volker Barthelmann |
|---|---|
| Initial release | 1995 |
| Stable release | 0.9d / December 30, 2014 |
| Written in | ANSI C |
| Operating system | Multiplatform |
| Type | Cross compiler |
| License | Freeware |
| Website | www.compilers.de |
vbcc is the name of a portable and retargetable ISO/ANSI C compiler. It supports ISO C according to ISO/IEC 9899:1989 and a subset of the new standard 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 like different pointer-sizes, ROM-able code, inline-assembly, bit-types, interrupt-handlers, section-attributes, stack-calculation and many others (depending on the backend).
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 includes:
- cross-module function-inlining
- partial inlining of recursive functions
- inter-procedural data-flow analysis
- inter-procedural 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
Currently backends (with different degree of maturity) exist 68k, Coldfire, PowerPC, 80x86 (386 and above), Alpha, C16x/ST10, 68HC12, z-machine architectures.
All common operating systems can be supported as host systems, including Windows and Unix/Linux systems.