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Joseph Myers 8313a7643a Support excess precision for integer / floating-point comparisons (PR c/87390).
In C11, implicit conversions from integer to floating-point types
produce results with the range and precision of the corresponding
evaluation format rather than only those of the type implicitly
converted to.  This patch implements that case of C11 excess precision
semantics in the case of a comparison between integer and
floating-point types, previously missed when implementing other cases
of excess precision for such implicit conversions.  As with other such
fixes, this patch conservatively follows the reading of C99 where
conversions from integer to floating-point do not produce results with
excess precision and so the change is made for C11 mode only.

Bootstrapped with no regressions on x86_64-pc-linux-gnu.

gcc/c:
	PR c/87390
	* c-typeck.c (build_binary_op): Use excess precision for
	comparisons of integers and floating-point for C11 and later.

gcc/testsuite:
	PR c/87390
	* gcc.target/i386/excess-precision-9.c,
	gcc.target/i386/excess-precision-10.c: New tests.

From-SVN: r264656
2018-09-26 22:14:16 +01:00
config Replace 8 spaces with a tabular in ChangeLog files. 2018-08-27 14:04:23 +00:00
contrib Add filter-rtags-warnings.py script. 2018-09-25 07:12:52 +00:00
fixincludes fixincludes: vxworks: remove unnecessary parentheses in ioctl wrapper macro 2018-09-03 13:26:45 +00:00
gcc Support excess precision for integer / floating-point comparisons (PR c/87390). 2018-09-26 22:14:16 +01:00
gnattools
gotools Ignore chmod errors during mostlyclean-local, check-go-tool 2018-09-26 12:56:09 +00:00
include Replace 8 spaces with a tabular in ChangeLog files. 2018-08-27 14:04:23 +00:00
INSTALL
intl libgnuintl.h (_INTL_MAY_RETURN_STRING_ARG, [...]): Backport changes from upstream gettext. 2018-09-18 22:08:49 -06:00
libada Replace 8 spaces with a tabular in ChangeLog files. 2018-08-27 14:04:23 +00:00
libatomic Replace 8 spaces with a tabular in ChangeLog files. 2018-08-27 14:04:23 +00:00
libbacktrace Replace 8 spaces with a tabular in ChangeLog files. 2018-08-27 14:04:23 +00:00
libcc1
libcpp Add range_idx param to range_label::get_text 2018-09-17 23:32:12 +00:00
libdecnumber Replace 8 spaces with a tabular in ChangeLog files. 2018-08-27 14:04:23 +00:00
libffi Replace 8 spaces with a tabular in ChangeLog files. 2018-08-27 14:04:23 +00:00
libgcc crtprec.c (set_precision): Use fnstcw instead of fstcw. 2018-09-26 17:25:15 +02:00
libgfortran Use vectored writes when reporting errors and warnings. 2018-09-21 21:12:59 +03:00
libgo syscall: don't assume we have a GETEUID system call 2018-09-26 15:17:30 +00:00
libgomp [nvptx] Remove use of CUDA unified memory in libgomp 2018-09-18 08:41:54 -07:00
libhsail-rt
libiberty Replace 8 spaces with a tabular in ChangeLog files. 2018-08-27 14:04:23 +00:00
libitm Remove nfs bogon 2018-08-03 14:53:48 -06:00
libobjc Replace 8 spaces with a tabular in ChangeLog files. 2018-08-27 14:04:23 +00:00
liboffloadmic
libquadmath
libsanitizer Replace 8 spaces with a tabular in ChangeLog files. 2018-08-27 14:04:23 +00:00
libssp Replace 8 spaces with a tabular in ChangeLog files. 2018-08-27 14:04:23 +00:00
libstdc++-v3 Use steady_clock to implement condition_variable::wait_for with predicate 2018-09-25 15:59:27 +01:00
libvtv Replace 8 spaces with a tabular in ChangeLog files. 2018-08-27 14:04:23 +00:00
lto-plugin Replace 8 spaces with a tabular in ChangeLog files. 2018-08-27 14:04:23 +00:00
maintainer-scripts
zlib
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.gitattributes
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ABOUT-NLS
ChangeLog Add self to maintainers list. 2018-09-13 16:11:29 +00:00
ChangeLog.jit
ChangeLog.tree-ssa
compile
config-ml.in
config.guess
config.rpath
config.sub
configure
configure.ac
COPYING
COPYING.LIB
COPYING.RUNTIME
COPYING3
COPYING3.LIB
depcomp
install-sh
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libtool.m4
ltgcc.m4
ltmain.sh
ltoptions.m4
ltsugar.m4
ltversion.m4
lt~obsolete.m4
MAINTAINERS Add self to maintainers list. 2018-09-13 16:11:29 +00:00
Makefile.def
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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
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See the file gcc/doc/gcc.texi (together with other files that it
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See http://gcc.gnu.org/bugs/ for how to report bugs usefully.

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