code-generator

This is the repository of the Clean code generator.

This is a delayed mirror of the upstream version and is only used to publish the package. Periodically changes from upstream are released in a new version here.

The code generator is released in the base-code-generator package. This package should normally not be used directly; instead, you should use base.

See the documentation in base if you intend to make a merge request for this repository.

Maintainer & license

This mirror is maintained by Camil Staps. The upstream is maintained by John van Groningen.

For license details, see the LICENSE file.

Changelog

v2.4.0

• Feature: in ccall for intel/amd allow multiple results by passing a single pointer (into the B stack) to C, the results must have at least the size of a word (a B stack element) and are enclosed in ()'s in the ccall string, the C code should store the results in successive memory locations (starting with the first), the code generator does not take into account padding by the C compiler, for example: ccall three_results “p:V(ppp)”
• Feature: for intel/amd processors add abc instructions cselect_b (conditionally select an integer, using a conditional move instruction), ctzb (count trailing zero bits, using bsf or tzcnt instead if bit manipulation instructions are allowed (-bm)), and cnzb (count non zero bits, using popcnt).
• Enhancement: optimise generated code for converting a condition code to 1 or 0 for intel/amd processors.
• Enhancement: optimisation for intel/amd processors, use lea instruction instead of a move and an add or sub of a constant instruction.

v2.3.0

• Feature: skip .r directives. (They are not used by this code generator.)
• Feature: add -bm flag to enable new bit manipulation instructions on amd64: lzcnt, andn, sarx, shlx and shrx.
• Enhancement: optimise generated amd64 code for eqAC_a of strings with length<=16.
• Fix: fix 32 bit register names in generated amd64 assembly of registers 10-15.
• Fix: generated code for 32 bit integer array update with a small constant index without checking indices for 64 bit Intel/AMD.

v2.2.0

• Feature: add support for instructions eq_arrayp2size, empty_arrayp2, copy_array_next, add_hp_arrayp2_first, add_hp_arrayp2_next, and set_arraysize.
• Enhancement: reduce memory usage and improve performance of small array constants.
• Enhancement: optimize generated address calculation code for unboxed arrays of records with 7, 14, 15, 23, or 27–31 record elements.

v2.1.0

• Feature: add support for create_arrayp2 and create_arrayp2_ instructions.
• Fix: fix .array directive to use the new array representation.

v2.0

• Enhancement: add dedicated _ARRAY_ descriptors for unboxed arrays of Int, Real, Bool, 32-bit Int, and 32-bit Real, to save space. Add _ARRAY_R_ descriptor for unboxed arrays of records.

v1.0

First tagged version.