GCC modified for the FreeChainXenon project
fc60a41612
Similar to the previous store_bit_field patch, but for extractions rather than insertions. The patch splits out the extraction-as-subreg handling into a new function (extract_bit_field_as_subreg), both for ease of writing and because a later patch will add another caller. The simplify_gen_subreg overload is temporary; it goes away in a later patch. 2017-12-20 Richard Sandiford <richard.sandiford@linaro.org> Alan Hayward <alan.hayward@arm.com> David Sherwood <david.sherwood@arm.com> gcc/ * rtl.h (simplify_gen_subreg): Add a temporary overload that accepts poly_uint64 offsets. * expmed.h (extract_bit_field): Take bitsize and bitnum as poly_uint64s rather than unsigned HOST_WIDE_INTs. * expmed.c (lowpart_bit_field_p): Likewise. (extract_bit_field_as_subreg): New function, split out from... (extract_bit_field_1): ...here. Take bitsize and bitnum as poly_uint64s rather than unsigned HOST_WIDE_INTs. For vector extractions, check that BITSIZE matches the size of the extracted value and that BITNUM is an exact multiple of that size. If all else fails, try forcing the value into memory if BITNUM is variable, and adjusting the address so that the offset is constant. Split the part that can only handle constant bitsize and bitnum out into... (extract_integral_bit_field): ...this new function. (extract_bit_field): Take bitsize and bitnum as poly_uint64s rather than unsigned HOST_WIDE_INTs. Co-Authored-By: Alan Hayward <alan.hayward@arm.com> Co-Authored-By: David Sherwood <david.sherwood@arm.com> From-SVN: r255878 |
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| contrib | ||
| fixincludes | ||
| gcc | ||
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| libffi | ||
| libgcc | ||
| libgfortran | ||
| libgo | ||
| libgomp | ||
| libhsail-rt | ||
| libiberty | ||
| libitm | ||
| libmpx | ||
| libobjc | ||
| liboffloadmic | ||
| libquadmath | ||
| libsanitizer | ||
| libssp | ||
| libstdc++-v3 | ||
| libvtv | ||
| lto-plugin | ||
| maintainer-scripts | ||
| zlib | ||
| .dir-locals.el | ||
| .gitattributes | ||
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| depcomp | ||
| install-sh | ||
| libtool-ldflags | ||
| libtool.m4 | ||
| ltgcc.m4 | ||
| ltmain.sh | ||
| ltoptions.m4 | ||
| ltsugar.m4 | ||
| ltversion.m4 | ||
| lt~obsolete.m4 | ||
| MAINTAINERS | ||
| Makefile.def | ||
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