07b1bf209c
2012-04-03 Richard Guenther <rguenther@suse.de> PR tree-optimization/52808 * tracer.c (tail_duplicate): Return whether we have duplicated any block. (tracer): If we have duplicated any block, cleanup the CFG. * cfghooks.c (duplicate_block): If we duplicated a loop header but not its loop, destroy the loop because it now has multiple entries. * tree-ssa-threadupdate.c (thread_through_loop_header): Tell the cfg manipulation routines we are not creating a multiple entry loop. * gcc.dg/pr52808.c: New testcase. From-SVN: r186104 |
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| boehm-gc | ||
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| contrib | ||
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| libada | ||
| libcpp | ||
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| libffi | ||
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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.