4a954e0685
PR78590 shows a problem in change_zero_ext, where we change a zero_extend of a subreg to a logical and. We should only do this if the thing we are taking the subreg of is a scalar integer, otherwise we will take a subreg of (e.g.) a float in a different size, which is nonsensical and hits an assert. PR rtl-optimization/78590 * combine.c (change_zero_ext): Transform zero_extend of subregs only if the subreg_reg is a scalar integer mode. From-SVN: r242999 |
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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.