GCC modified for the FreeChainXenon project
f12697f329
Given the https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113837#c9 comment, the following patch just attempts to implement what I think is best for ia32. Compared to https://gitlab.com/x86-psABIs/i386-ABI/-/issues/5 , like that patch for _BitInt(64) or smaller it uses the smallest containing {,un}signed {char,short,int,long long} for passing/returning and layout of variables including in structures for alignment/size, with any extra bits unspecified. Unlike the above proposal, for larger _BitInt (i.e. _BitInt(65)+), it uses passing/returning/layout/alignment of structure containing minimum needed number of 32-bit limbs, again with the extra bits unspecified. This is because most operations (except copy or bitwise ops) on _BitInts aren't really vectorizable and will be under the hood implemented in loops over 32-bit limbs anyway (using 64-bit limbs under the hood would mean often using library implementation for the basic operations) and because ia32 doesn't align even long long/double in structures to 64-bit I think it is better to just use 32-bit alignment for that. And I don't see a reason to waste 32-bit bits say for _BitInt(224) or _BitInt(288) on ia32. So, effectively it is like the x86-64 _BitInt ABI with everything divided by 2, the only exception is that in x86-64 psABI _BitInt(128) is said to be already a structure of 2 limbs, which happens to be passed mostly the same as __int128 (except for alignment). 2024-02-26 Jakub Jelinek <jakub@redhat.com> * config/i386/i386.cc (ix86_bitint_type_info): Add support for !TARGET_64BIT. |
||
|---|---|---|
| .github | ||
| c++tools | ||
| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
| gnattools | ||
| gotools | ||
| include | ||
| INSTALL | ||
| libada | ||
| libatomic | ||
| libbacktrace | ||
| libcc1 | ||
| libcody | ||
| libcpp | ||
| libdecnumber | ||
| libffi | ||
| libgcc | ||
| libgfortran | ||
| libgm2 | ||
| libgo | ||
| libgomp | ||
| libgrust | ||
| libiberty | ||
| libitm | ||
| libobjc | ||
| libphobos | ||
| libquadmath | ||
| libsanitizer | ||
| libssp | ||
| libstdc++-v3 | ||
| libvtv | ||
| lto-plugin | ||
| maintainer-scripts | ||
| zlib | ||
| .dir-locals.el | ||
| .gitattributes | ||
| .gitignore | ||
| ABOUT-NLS | ||
| ar-lib | ||
| ChangeLog | ||
| ChangeLog.jit | ||
| ChangeLog.tree-ssa | ||
| compile | ||
| config-ml.in | ||
| config.guess | ||
| config.rpath | ||
| config.sub | ||
| configure | ||
| configure.ac | ||
| COPYING | ||
| COPYING.LIB | ||
| COPYING.RUNTIME | ||
| COPYING3 | ||
| COPYING3.LIB | ||
| depcomp | ||
| install-sh | ||
| libtool-ldflags | ||
| libtool.m4 | ||
| ltgcc.m4 | ||
| ltmain.sh | ||
| ltoptions.m4 | ||
| ltsugar.m4 | ||
| ltversion.m4 | ||
| lt~obsolete.m4 | ||
| MAINTAINERS | ||
| Makefile.def | ||
| Makefile.in | ||
| Makefile.tpl | ||
| missing | ||
| mkdep | ||
| mkinstalldirs | ||
| move-if-change | ||
| multilib.am | ||
| README | ||
| SECURITY.txt | ||
| symlink-tree | ||
| test-driver | ||
| ylwrap | ||
This directory contains the GNU Compiler Collection (GCC). The GNU Compiler Collection is free software. See the files whose names start with COPYING for copying permission. The manuals, and some of the runtime libraries, are under different terms; see the individual source files for details. The directory INSTALL contains copies of the installation information as HTML and plain text. The source of this information is gcc/doc/install.texi. The installation information includes details of what is included in the GCC sources and what files GCC installs. See the file gcc/doc/gcc.texi (together with other files that it includes) for usage and porting information. An online readable version of the manual is in the files gcc/doc/gcc.info*. See http://gcc.gnu.org/bugs/ for how to report bugs usefully. Copyright years on GCC source files may be listed using range notation, e.g., 1987-2012, indicating that every year in the range, inclusive, is a copyrightable year that could otherwise be listed individually.