SUNDAY, SEPTEMBER 20, 2026
a68
a68: low: support for fixed sized modes
Algol-68 compiler's lowering phase updated to support fixed-sized modes.
The Algol-68 compiler’s lowering stage now supports fixed-sized modes, enabling the generation of appropriate machine code for these types. This involves updates to various lowering functions across multiple files to handle operations like bit manipulation, real arithmetic, and integer conversions for word-sized types.
In Details
The Algol-68 lowering passes have been extended to correctly handle fixed-sized modes. Functions within a68-low-bits.cc, a68-low-prelude.cc, a68-low-reals.cc, and others have been modified to generate code for operations on word-sized integers and reals.
For Context
- lowering
- The process of converting higher-level language constructs into lower-level representations, often closer to machine code.
- fixed sized modes
- Data types in Algol-68 that have a precisely defined size in bits or bytes, offering more control than standard variable-sized types.