Support 64-bit double and 64-bit long double configurations.

gcc/
	Support 64-bit double and 64-bit long double configurations.

	PR target/92055
	* config.gcc (tm_defines) [avr]: Set from --with-double=,
	--with-long-double=.
	* config/avr/t-multilib: Remove.
	* config/avr/t-avr: Output of genmultilib.awk is now fully
	dynamically generated and no more part of the repo.
	(HAVE_DOUBLE_MULTILIB, HAVE_LONG_DOUBLE_MULTILIB): New variables.
	Pass them down to...
	* config/avr/genmultilib.awk: ...here and handle them.
	* gcc/config/avr/avr.opt (-mdouble=, avr_double). New option and var.
	(-mlong-double=, avr_long_double). New option and var.
	* common/config/avr/avr-common.c (opts.h, diagnostic.h): Include.
	(TARGET_OPTION_OPTIMIZATION_TABLE) <-mdouble=, -mlong-double=>:
	Set default as requested by --with-double=
	(TARGET_HANDLE_OPTION): Define to this...
	(avr_handle_option): ...new hook worker.
	* config/avr/avr.h (DOUBLE_TYPE_SIZE): Define to avr_double.
	(LONG_DOUBLE_TYPE_SIZE): Define to avr_long_double.
	(avr_double_lib): New proto for spec function.
	(EXTRA_SPEC_FUNCTIONS) <double-lib>: Add.
	(DRIVER_SELF_SPECS): Call %:double-lib.
	* config/avr/avr.c (avr_option_override): Assert
	sizeof(long double) >= sizeof(double) for the target.
	* config/avr/avr-c.c (avr_cpu_cpp_builtins)
	[__HAVE_DOUBLE_MULTILIB__, __HAVE_LONG_DOUBLE_MULTILIB__]
	[__HAVE_DOUBLE64__, __HAVE_DOUBLE32__, __DEFAULT_DOUBLE__=]
	[__HAVE_LONG_DOUBLE64__, __HAVE_LONG_DOUBLE32__]
	[__HAVE_LONG_DOUBLE_IS_DOUBLE__, __DEFAULT_LONG_DOUBLE__=]:
	New built-in define depending on --with-double=, --with-long-double=.
	* config/avr/driver-avr.c (avr_double_lib): New spec function.
	* doc/invoke.tex (AVR Options) <-mdouble=,-mlong-double=>: Doc.
	* doc/install.texi (Cross-Compiler-Specific Options)
	<--with-double=, --with-long-double=>: Doc.

libgcc/
	Support 64-bit double and 64-bit long double configurations.

	PR target/92055
	* config/avr/t-avr (HOST_LIBGCC2_CFLAGS): Only add -DF=SF if
	long double is a 32-bit type.
	* config/avr/t-avrlibc: Copy double64 and long-double64
	multilib(s) from the vanilla one.
	* config/avr/t-copy-libgcc: New Makefile snip.

From-SVN: r277908

1 files changed, 82 insertions, 0 deletions

diff --git a/gcc/config.gcc b/gcc/config.gcc
index d74bcbb..72f65640 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1287,6 +1287,88 @@ avr-*-*)
 	    tm_file="${tm_file} ${cpu_type}/avrlibc.h"
 	    tm_defines="${tm_defines} WITH_AVRLIBC"
 	fi
+	case y${with_double} in
+	    y | y32)
+		avr_double=32
+		tm_defines="${tm_defines} HAVE_DOUBLE32"
+		;;
+	    y64)
+		avr_double=64
+		tm_defines="${tm_defines} HAVE_DOUBLE64"
+		;;
+	    y64,32)
+		avr_double=64
+		avr_double_multilib=1
+		tm_defines="${tm_defines} HAVE_DOUBLE32"
+		tm_defines="${tm_defines} HAVE_DOUBLE64"
+		tm_defines="${tm_defines} HAVE_DOUBLE_MULTILIB"
+		;;
+	    y32,64)
+		avr_double=32
+		avr_double_multilib=1
+		tm_defines="${tm_defines} HAVE_DOUBLE32"
+		tm_defines="${tm_defines} HAVE_DOUBLE64"
+		tm_defines="${tm_defines} HAVE_DOUBLE_MULTILIB"
+		;;
+	    *)
+		echo "Error: --with-double= can only be used with: '32', '32,64', '64,32', '64'" 1>&2
+		exit 1
+		;;
+	esac
+	case y${with_long_double} in
+	    y | y32)
+		avr_long_double=32
+		tm_defines="${tm_defines} HAVE_LONG_DOUBLE32"
+		;;
+	    y64)
+		avr_long_double=64
+		tm_defines="${tm_defines} HAVE_LONG_DOUBLE64"
+		;;
+	    y64,32)
+		avr_long_double=64
+		avr_long_double_multilib=1
+		tm_defines="${tm_defines} HAVE_LONG_DOUBLE32"
+		tm_defines="${tm_defines} HAVE_LONG_DOUBLE64"
+		tm_defines="${tm_defines} HAVE_LONG_DOUBLE_MULTILIB"
+		;;
+	    y32,64)
+		avr_long_double=32
+		avr_long_double_multilib=1
+		tm_defines="${tm_defines} HAVE_LONG_DOUBLE32"
+		tm_defines="${tm_defines} HAVE_LONG_DOUBLE64"
+		tm_defines="${tm_defines} HAVE_LONG_DOUBLE_MULTILIB"
+		;;
+	    ydouble)
+		avr_long_double=${avr_double}
+		tm_defines="${tm_defines} HAVE_LONG_DOUBLE_IS_DOUBLE"
+		if test y${avr_double_multilib} = y1; then
+		    tm_defines="${tm_defines} HAVE_LONG_DOUBLE32"
+		    tm_defines="${tm_defines} HAVE_LONG_DOUBLE64"
+		else
+		    tm_defines="${tm_defines} HAVE_LONG_DOUBLE${avr_long_double}"
+		fi
+		;;
+	    *)
+		echo "Error: --with-long_double= can only be used with: '32', '32,64', '64,32', '64', 'double'" 1>&2
+		exit 1
+		;;
+	esac
+	if test ${avr_long_double}x${avr_long_double_multilib}y${avr_double_multilib}z = 32xy1z; then
+	    if test y${with_long_double} != ydouble; then
+		echo "Error: --with-double=${with_double} requests a multilib for double, but long double is always 32 bits wide due to --with-long-double=${with_long_double}" 1>&2
+		exit 1
+	    fi
+	fi
+	if test ${avr_double}x${avr_long_double_multilib}y${avr_double_multilib}z = 64x1yz; then
+	    echo "Error: --with-long-double=${with_long_double} requests a multilib for long double, but double is always 64 bits wide due to --with-double=64" 1>&2
+	    exit 1
+	fi
+	if test y${avr_double}${avr_long_double} = y6432; then
+	    echo "Error: double default of 64 bits from --with-double=${with_double} conflicts with default of 32 bits for long double from --with-long-double=${with_long_double}" 1>&2
+	    exit 1
+	fi
+	tm_defines="${tm_defines} WITH_DOUBLE${avr_double}"
+	tm_defines="${tm_defines} WITH_LONG_DOUBLE${avr_long_double}"
 	tmake_file="${tmake_file} avr/t-avr avr/t-multilib"
 	use_gcc_stdint=wrap
 	extra_gcc_objs="driver-avr.o avr-devices.o"