f7e1d19d58
On AArch64 we have integer modes larger than TImode, and while we can generate moves for these they're not as efficient. So instead make sure we limit the maximum we can copy to TImode. This means copying a 16 byte struct will issue 1 TImode copy, which will be done using a single STP as we expect but an CImode sized copy won't issue CImode operations. I am also moving the residual code inside the if since smallest_mode_for_int may trap if the mode doesn't exist. And the only time we know the mode to exist for sure is when the condition of the if is true. This also saves repeated calls to the iterator. gcc/ 2018-08-30 Tamar Christina <tamar.christina@arm.com> * config/aarch64/aarch64.c (aarch64_expand_movmem): Set TImode max. gcc/testsuite/ 2018-08-30 Tamar Christina <tamar.christina@arm.com> * gcc.target/aarch64/large_struct_copy_2.c: New. From-SVN: r263974 |
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| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
| gnattools | ||
| gotools | ||
| include | ||
| INSTALL | ||
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| libgcc | ||
| libgfortran | ||
| libgo | ||
| libgomp | ||
| libhsail-rt | ||
| libiberty | ||
| libitm | ||
| libobjc | ||
| liboffloadmic | ||
| libquadmath | ||
| libsanitizer | ||
| libssp | ||
| libstdc++-v3 | ||
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| lto-plugin | ||
| maintainer-scripts | ||
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| .dir-locals.el | ||
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| COPYING3 | ||
| COPYING3.LIB | ||
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| depcomp | ||
| install-sh | ||
| libtool-ldflags | ||
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| lt~obsolete.m4 | ||
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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.