732e4a75fe
This simple i386 patch unblocks a more significant change. The testcase
gcc.target/i386/sse2-pr94680.c isn't quite testing what's intended, and
alas the fix for PR target/94680 doesn't (yet) handle V2DF mode.
For the first test from sse2-pr94680.c, below
v2df foo_v2df (v2df x) {
return __builtin_shuffle (x, (v2df) { 0, 0 }, (v2di) { 0, 2 });
}
GCC on x86_64-pc-linux-gnu with -O2 currently generates:
movhpd .LC0(%rip), %xmm0
ret
.LC0:
.long 0
.long 0
which passes the test as it contains a mov insn and no xor.
Alas reading a zero from the constant pool isn't quite the
desired implementation. With this patch we now generate:
movq %xmm0, %xmm0
ret
The same code as we generate for V2DI, and add a stricter
test case. This implementation generalizes the sse2_movq128
to V2DI and V2DF modes using a VI8F_128 mode iterator and
renames it *sse2_movq128_<mode>. A new define_expand is
introduced for sse2_movq128 so that the exisiting builtin
interface (CODE_FOR_sse2_movq128) remains the same.
2022-03-16 Roger Sayle <roger@nextmovesoftware.com>
gcc/ChangeLog
PR target/94680
* config/i386/sse.md (sse2_movq128): New define_expand to
preserve previous named instruction.
(*sse2_movq128_<mode>): Renamed from sse2_movq128, and
generalized to VI8F_128 (both V2DI and V2DF).
gcc/testsuite/ChangeLog
PR target/94680
* gcc.target/i386/sse2-pr94680-2.c: New stricter V2DF test case.
|
||
|---|---|---|
| c++tools | ||
| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
| gnattools | ||
| gotools | ||
| include | ||
| INSTALL | ||
| intl | ||
| libada | ||
| libatomic | ||
| libbacktrace | ||
| libcc1 | ||
| libcody | ||
| libcpp | ||
| libdecnumber | ||
| libffi | ||
| libgcc | ||
| libgfortran | ||
| libgo | ||
| libgomp | ||
| libiberty | ||
| libitm | ||
| libobjc | ||
| liboffloadmic | ||
| 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.