b931e4792b
This avoids endless cycling when a PHI node with unchanged backedge value (the PHI result appearing there) is subject to CSE since doing that effectively alters the hash entry. The way to avoid this is to ignore such edges when processing the PHI node. 2021-03-22 Richard Biener <rguenther@suse.de> PR tree-optimization/99694 * tree-ssa-sccvn.c (visit_phi): Ignore edges with the PHI result. * gcc.dg/torture/pr99694.c: New testcase. |
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| c++tools | ||
| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
| gnattools | ||
| gotools | ||
| include | ||
| INSTALL | ||
| intl | ||
| libada | ||
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| libbacktrace | ||
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| libffi | ||
| libgcc | ||
| libgfortran | ||
| libgo | ||
| libgomp | ||
| libhsail-rt | ||
| libiberty | ||
| libitm | ||
| libobjc | ||
| liboffloadmic | ||
| libphobos | ||
| libquadmath | ||
| libsanitizer | ||
| libssp | ||
| libstdc++-v3 | ||
| libvtv | ||
| lto-plugin | ||
| maintainer-scripts | ||
| zlib | ||
| .dir-locals.el | ||
| .gitattributes | ||
| .gitignore | ||
| ABOUT-NLS | ||
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| configure | ||
| configure.ac | ||
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| COPYING3 | ||
| COPYING3.LIB | ||
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| depcomp | ||
| install-sh | ||
| libtool-ldflags | ||
| libtool.m4 | ||
| lt~obsolete.m4 | ||
| ltgcc.m4 | ||
| ltmain.sh | ||
| ltoptions.m4 | ||
| ltsugar.m4 | ||
| ltversion.m4 | ||
| MAINTAINERS | ||
| Makefile.def | ||
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| missing | ||
| mkdep | ||
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