6d2eddf456
The following adds an alternate way of expanding a uniform
mask vector constructor like
_55 = _2 ? -1 : 0;
vect_cst__56 = {_55, _55, _55, _55, _55, _55, _55, _55};
when the mask mode is a scalar int mode like for AVX512 or GCN.
Instead of piecewise building the result via shifts and ors
we can take advantage of uniformity and signedness of the
component and simply sign-extend to the result.
Instead of
cmpl $3, %edi
sete %cl
movl %ecx, %esi
leal (%rsi,%rsi), %eax
leal 0(,%rsi,4), %r9d
leal 0(,%rsi,8), %r8d
orl %esi, %eax
orl %r9d, %eax
movl %ecx, %r9d
orl %r8d, %eax
movl %ecx, %r8d
sall $4, %r9d
sall $5, %r8d
sall $6, %esi
orl %r9d, %eax
orl %r8d, %eax
movl %ecx, %r8d
orl %esi, %eax
sall $7, %r8d
orl %r8d, %eax
kmovb %eax, %k1
we then get
cmpl $3, %edi
sete %cl
negl %ecx
kmovb %ecx, %k1
Code generation for non-uniform masks remains bad, but at least
I see no easy way out for the most general case here.
PR middle-end/110452
* expr.cc (store_constructor): Handle uniform boolean
vectors with integer mode specially.
|
||
|---|---|---|
| c++tools | ||
| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
| gnattools | ||
| gotools | ||
| include | ||
| INSTALL | ||
| intl | ||
| libada | ||
| libatomic | ||
| libbacktrace | ||
| libcc1 | ||
| libcody | ||
| libcpp | ||
| libdecnumber | ||
| libffi | ||
| libgcc | ||
| libgfortran | ||
| libgm2 | ||
| libgo | ||
| libgomp | ||
| 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 | ||
| 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.