e9ebb86799
Currently we only ever call emit_conditional_move with the comparison (as well as its comparands) we got from the jump. Thus, backends are going to emit a CC comparison for every conditional move that is being generated instead of re-using the existing CC. This, combined with emitting temporaries for each conditional move, causes sky-high costs for conditional moves. This patch allows to re-use a CC so the costing situation is improved a bit. gcc/ChangeLog: * rtl.h (struct rtx_comparison): New struct that holds an rtx comparison. * config/rs6000/rs6000.cc (rs6000_emit_minmax): Use struct instead of single parameters. (rs6000_emit_swsqrt): Likewise. * expmed.cc (expand_sdiv_pow2): Likewise. (emit_store_flag): Likewise. * expr.cc (expand_cond_expr_using_cmove): Likewise. (expand_expr_real_2): Likewise. * ifcvt.cc (noce_emit_cmove): Add compare and reversed compare parameters. * optabs.cc (emit_conditional_move_1): New function. (expand_doubleword_shift_condmove): Use struct. (emit_conditional_move): Use struct and allow to call directly without going through preparation steps. * optabs.h (emit_conditional_move): Use struct. |
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INSTALL | ||
c++tools | ||
config | ||
contrib | ||
fixincludes | ||
gcc | ||
gnattools | ||
gotools | ||
include | ||
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 | ||
COPYING | ||
COPYING.LIB | ||
COPYING.RUNTIME | ||
COPYING3 | ||
COPYING3.LIB | ||
ChangeLog | ||
ChangeLog.jit | ||
ChangeLog.tree-ssa | ||
MAINTAINERS | ||
Makefile.def | ||
Makefile.in | ||
Makefile.tpl | ||
README | ||
ar-lib | ||
build.log | ||
compile | ||
config-ml.in | ||
config.guess | ||
config.rpath | ||
config.sub | ||
configure | ||
configure.ac | ||
depcomp | ||
install-sh | ||
libtool-ldflags | ||
libtool.m4 | ||
ltgcc.m4 | ||
ltmain.sh | ||
ltoptions.m4 | ||
ltsugar.m4 | ||
ltversion.m4 | ||
lt~obsolete.m4 | ||
missing | ||
mkdep | ||
mkinstalldirs | ||
move-if-change | ||
multilib.am | ||
symlink-tree | ||
test-driver | ||
ylwrap |
README
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.