2e17e31925
Before this patch series it wasn't really possible to not have an FPU; it was always there, even if the hardware didn't really support it. Now that we have -mfpu=auto, the concept of not having an FPU becomes real. Consequently, when the -mfloat-abi switch is set to softfp doing the Right Thing is much more important. In this case we have a soft-float ABI, but can use FP instructions if they are available. To support this we have to separate out TARGET_HARD_FLOAT into two use cases: one where the instructions exist and one when they don't. We preserve the original meaning of TARGET_HARD_FLOAT (but add an extra check) of meaning that we are generating HW FP instructions, and add a new macro for the special case when use of FP instructions is permitted, but might not be available at this time (the distinction is important because they might be enabled by an attribute during the compilation). TARGET_SOFT_FLOAT continues to be the exact inverse of TARGET_HARD_FLOAT, but we now define it as such. * config/arm/arm.h (TARGET_HARD_FLOAT): Also check that we have some floating-point instructions. (TARGET_SOFT_FLOAT): Define as inverse of TARGET_HARD_FLOAT. (TARGET_MAYBE_HARD_FLOAT): New macro. * config/arm/arm-builtins.c (arm_init_builtins): Use TARGET_MAYBE_HARD_FLOAT. * config/arm/arm.c (arm_option_override): Use TARGET_HARD_FLOAT_ABI. From-SVN: r249293 |
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| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
| gnattools | ||
| gotools | ||
| include | ||
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| libcpp | ||
| libdecnumber | ||
| libffi | ||
| libgcc | ||
| libgfortran | ||
| libgo | ||
| libgomp | ||
| libhsail-rt | ||
| libiberty | ||
| libitm | ||
| libmpx | ||
| libobjc | ||
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| depcomp | ||
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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 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. Copyright years on GCC source files may be listed using range notation, e.g., 1987-2012, indicating that every year in the range, inclusive, is a copyrightable year that could otherwise be listed individually.