Justifications
- compiler_rt base routines are almost finished, so make 1:1
mapping of code and documentation.
- Make adjustments to code + documentation simpler to prevent technical or
documentation debt.
- Copy and adjust __divmodsi4 tests for __divmoddi4 and __divmodti4.
- Assuming d = a/b does not overflow (MIN/-1) or uses div by 0,
then tmp = (d * b) = (a/b * b) = a does not overflow.
=> Remove wraparound for remainder in applicable routines.
These are unused in LLVM, but in gcc used for example by rl78.
Move test files into common file, add tests for aforementioned routines
and missing ones for __lshrti3.
- In Integer Bit Operations, use zeros consistently and fix the
incorrect function descriptions
- In ucmp, fix the incorrect signedness of the operands
- In Integer Arithmetic, document the signedness of the operands in
div, udiv, mod, umod, udivmod and divmod as it is done in LLVM
documentation
- In Float Conversion, replace "int_to_float" to "int to float" and
"uint_to_float" to "uint to float"
This commit makes the text more dense with sources, noes the outstanding
audit and adds an explanation of the table before converting everything
to markdown tables.
For the status a checkmark or cross in utf8 encoding are used and the
input and output sizes of all operations are given inclusive comments for
understanding of the routines.
This should document all compiler_rt integer and float routines, but
does not include a documentation of existing ieee floating and math
routines.
This documents status of routines and adds the next work item
"Decimal float library routines", which are only recommended for
binary data. Complete absence of tests is also documented.
This does not document the various aliases, e.g. those for ARM.
Missing Integer library routines:
- __addvsi3
- __addvdi3
- __addvti3
- __addvdi3
- __addvti3
- __subvsi3
- __subvdi3
- __subvti3
- __subvdi3
- __subvti3
- __mulvsi3
- __mulvdi3
- __mulvti3
- __mulvdi3
- __mulvti3
Missing floating library routines:
- __powisf2
- __powidf2
- __powitf2
- __powixf2
Missing routines for symbol-level compatibility to gcc:
- __ashlsi3
- __ashrsi3
- __lshrsi3
stage2: change logic for detecting whether the main package is inside
the std package. Previously it relied on realpath() which is not portable.
This uses resolve() which is how imports already work.
* stage2: fix cleanup bug when creating Module
* flatten lib/std/special/* to lib/*
- this was motivated by making main_pkg_is_inside_std false for
compiler_rt & friends.
* rename "mini libc" to "universal libc"
