mirror of
https://forge.sourceware.org/marek/gcc.git
synced 2026-02-22 03:47:02 -05:00
77ff7c2bb2
The gimple optimization passes can create negative shift counts and pass them into the simplification routines as seen by the code in pr123530. If we then call tree_to_uhwi on those values we get a nice little ICE. This guards the tree_to_uhwi calls on tree_fits_uhwi_p and resolves the ICE. I just protected them all in this recently added pattern. Bootstrapped and regression tested on x86 and riscv. Also tested on the rest of the embedded targets without any regressions. Pushing to the trunk. PR tree-optimization/123530 gcc/ * match.pd (reassociating xor to enable rotations): Verify constants fit into a uhwi before trying to extract them as a uhwi. gcc/testsuite/ * gcc.dg/torture/pr123530.c: New test.
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.