26b538cd81
This patch addresses the ICE in gcc.dg/attr-vector_size.c during make -k check on nvptx-none. The actual ICE looks like: testsuite/gcc.dg/attr-vector_size.c:29:1: internal compiler error: \ in tree_to_shwi, at tree.c:7321 0xf53bf2 tree_to_shwi(tree_node const*) ../../gcc/gcc/tree.c:7321 0xff1969 nvptx_vector_alignment ../../gcc/gcc/config/nvptx/nvptx.c:5105^M The problem is that the caller has ensured that TYPE_SIZE(type) is representable as an unsigned HOST_WIDE_INT, but nvptx_vector_alignment is accessing it as a signed HOST_WIDE_INT which overflows in pathological conditions. Amongst those pathological conditions is that a TYPE_SIZE of zero can sometimes reach this function, prior to an error being emitted. Making sure the result is not less than the mode's alignment and not greater than BIGGEST_ALIGNMENT fixes the ICEs, and generates the expected compile-time error messages. Tested on --target=nvptx-none, with a "make" and "make check" which results in four fewer unexpected failures and three more expected passes. 2020-07-03 Roger Sayle <roger@nextmovesoftware.com> Tom de Vries <tdevries@suse.de> gcc/ChangeLog: PR target/90932 * config/nvptx/nvptx.c (nvptx_vector_alignment): Use tree_to_uhwi to access TYPE_SIZE (type). Return at least the mode's alignment. |
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| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
| gnattools | ||
| gotools | ||
| include | ||
| INSTALL | ||
| intl | ||
| libada | ||
| libatomic | ||
| libbacktrace | ||
| libcc1 | ||
| libcpp | ||
| libdecnumber | ||
| 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 | ||
| ar-lib | ||
| ChangeLog | ||
| ChangeLog.jit | ||
| ChangeLog.tree-ssa | ||
| compile | ||
| config-ml.in | ||
| config.guess | ||
| config.rpath | ||
| config.sub | ||
| configure | ||
| configure.ac | ||
| COPYING | ||
| COPYING3 | ||
| COPYING3.LIB | ||
| COPYING.LIB | ||
| COPYING.RUNTIME | ||
| depcomp | ||
| install-sh | ||
| libtool-ldflags | ||
| libtool.m4 | ||
| lt~obsolete.m4 | ||
| ltgcc.m4 | ||
| ltmain.sh | ||
| ltoptions.m4 | ||
| ltsugar.m4 | ||
| ltversion.m4 | ||
| MAINTAINERS | ||
| Makefile.def | ||
| Makefile.in | ||
| Makefile.tpl | ||
| missing | ||
| mkdep | ||
| mkinstalldirs | ||
| move-if-change | ||
| multilib.am | ||
| README | ||
| symlink-tree | ||
| test-driver | ||
| ylwrap | ||
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