[ARC] New option handling, refurbish multilib support.

gcc/
2016-11-15  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc-arch.h: New file.
	* config/arc/arc-arches.def: Likewise.
	* config/arc/arc-cpus.def: Likewise.
	* config/arc/arc-options.def: Likewise.
	* config/arc/t-multilib: Likewise.
	* config/arc/genmultilib.awk: Likewise.
	* config/arc/genoptions.awk: Likewise.
	* config/arc/arc-tables.opt: Likewise.
	* config/arc/driver-arc.c: Likewise.
	* testsuite/gcc.target/arc/nps400-cpu-flag.c: Likewise.
	* common/config/arc/arc-common.c (arc_handle_option): Trace
	toggled options.
	* config.gcc (arc*-*-*): Add arc-tables.opt to arc's extra
	options; check for supported cpu against arc-cpus.def file.
	(arc*-*-elf*, arc*-*-linux-uclibc*): Use new make fragment; define
	TARGET_CPU_BUILD macro; add driver-arc.o as an extra object.
	* config/arc/arc-c.def: Add emacs local variables.
	* config/arc/arc-opts.h (processor_type): Use arc-cpus.def file.
	(FPU_FPUS, FPU_FPUD, FPU_FPUDA, FPU_FPUDA_DIV, FPU_FPUDA_FMA)
	(FPU_FPUDA_ALL, FPU_FPUS_DIV, FPU_FPUS_FMA, FPU_FPUS_ALL)
	(FPU_FPUD_DIV, FPU_FPUD_FMA, FPU_FPUD_ALL): New defines.
	(DEFAULT_arc_fpu_build): Define.
	(DEFAULT_arc_mpy_option): Define.
	* config/arc/arc-protos.h (arc_init): Delete.
	* config/arc/arc.c (arc_cpu_name): New variable.
	(arc_selected_cpu, arc_selected_arch, arc_arcem, arc_archs)
	(arc_arc700, arc_arc600, arc_arc601): New variable.
	(arc_init): Add static; remove selection of default tune value,
	cleanup obsolete error messages.
	(arc_override_options): Make use of .def files for selecting the
	right cpu and option configurations.
	* config/arc/arc.h (stdbool.h): Include.
	(TARGET_CPU_DEFAULT): Define.
	(CPP_SPEC): Remove mcpu=NPS400 handling.
	(arc_cpu_to_as): Declare.
	(EXTRA_SPEC_FUNCTIONS): Define.
	(OPTION_DEFAULT_SPECS): Likewise.
	(ASM_DEFAULT): Remove.
	(ASM_SPEC): Use arc_cpu_to_as.
	(DRIVER_SELF_SPECS): Remove deprecated options.
	(arc_base_cpu):	Declare.
	(TARGET_ARC600, TARGET_ARC601, TARGET_ARC700, TARGET_EM)
	(TARGET_HS, TARGET_V2, TARGET_ARC600): Make them use arc_base_cpu
	variable.
	(MULTILIB_DEFAULTS): Use ARC_MULTILIB_CPU_DEFAULT.
	* config/arc/arc.md (attr_cpu): Remove.
	* config/arc/arc.opt (mno-mpy): Deprecate.
	(mcpu=ARC600, mcpu=ARC601, mcpu=ARC700, mcpu=NPS400, mcpu=ARCEM)
	(mcpu=ARCHS): Remove.
	(mcrc, mdsp-packa, mdvbf, mmac-d16, mmac-24, mtelephony, mrtsc):
	Deprecate.
	(mbarrel_shifte, mspfp_, mdpfp_, mdsp_pack, mmac_): Remove.
	(arc_fpu): Use new defines.
	(mpy-option): Change to use numeric or string like inputs.
	* config/arc/t-arc (driver-arc.o): New target.
	(arc-cpus, t-multilib, arc-tables.opt): Likewise.
	* config/arc/t-arc-newlib: Delete.
	* config/arc/t-arc-uClibc: Renamed to t-uClibc.
	* doc/invoke.texi (ARC): Update arc options.

Fixup

From-SVN: r242425

1 files changed, 25 insertions, 22 deletions

diff --git a/gcc/config.gcc b/gcc/config.gcc
index 3e0be22..595563b 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -318,6 +318,7 @@ arc*-*-*)
 	cpu_type=arc
 	c_target_objs="arc-c.o"
 	cxx_target_objs="arc-c.o"
+	extra_options="${extra_options} arc/arc-tables.opt"
 	;;
 arm*-*-*)
 	cpu_type=arm
@@ -999,13 +1000,12 @@ alpha*-dec-*vms*)
 	;;
 arc*-*-elf*)
 	extra_headers="arc-simd.h"
-	tm_file="dbxelf.h elfos.h newlib-stdint.h ${tm_file}"
-	tmake_file="arc/t-arc-newlib arc/t-arc"
-	case x"${with_cpu}" in
-	  xarc600|xarc601|xarc700)
-		target_cpu_default="TARGET_CPU_$with_cpu"
-		;;
-	esac
+	tm_file="arc/arc-arch.h dbxelf.h elfos.h newlib-stdint.h ${tm_file}"
+	tmake_file="arc/t-multilib arc/t-arc"
+	extra_gcc_objs="driver-arc.o"
+	if test "x$with_cpu" != x; then
+		tm_defines="${tm_defines} TARGET_CPU_BUILD=PROCESSOR_$with_cpu"
+	fi
 	if test x${with_endian} = x; then
 		case ${target} in
 		arc*be-*-* | arc*eb-*-*)	with_endian=big ;;
@@ -1022,15 +1022,14 @@ arc*-*-elf*)
 	;;
 arc*-*-linux-uclibc*)
 	extra_headers="arc-simd.h"
-	tm_file="dbxelf.h elfos.h gnu-user.h linux.h glibc-stdint.h ${tm_file}"
-	tmake_file="${tmake_file} arc/t-arc-uClibc arc/t-arc"
+	tm_file="arc/arc-arch.h dbxelf.h elfos.h gnu-user.h linux.h glibc-stdint.h ${tm_file}"
+	tmake_file="${tmake_file} arc/t-uClibc arc/t-arc"
 	tm_defines="${tm_defines} TARGET_SDATA_DEFAULT=0"
 	tm_defines="${tm_defines} TARGET_MMEDIUM_CALLS_DEFAULT=1"
-	case x"${with_cpu}" in
-	  xarc600|xarc601|xarc700)
-		target_cpu_default="TARGET_CPU_$with_cpu"
-		;;
-	esac
+	extra_gcc_objs="driver-arc.o"
+	if test "x$with_cpu" != x; then
+		tm_defines="${tm_defines} TARGET_CPU_BUILD=PROCESSOR_$with_cpu"
+	fi
 	if test x${with_endian} = x; then
 		case ${target} in
 		arc*be-*-* | arc*eb-*-*)	with_endian=big ;;
@@ -3624,15 +3623,19 @@ case "${target}" in
 		done
 		;;
 
-	arc*-*-*) # was:	arc*-*-linux-uclibc)
+	arc*-*-*)
 		supported_defaults="cpu"
-		case $with_cpu in
-		  arc600|arc601|arc700)
-			;;
-		  *) echo "Unknown cpu type"
-			exit 1
-			;;
-		esac
+
+		if [ x"$with_cpu" = x ] \
+		    || grep "^ARC_CPU ($with_cpu," \
+		       ${srcdir}/config/arc/arc-cpus.def \
+		       > /dev/null; then
+		 # Ok
+		 true
+		else
+		 echo "Unknown cpu used in --with-cpu=$with_cpu" 1>&2
+		 exit 1
+		fi
 		;;
 
 	arm*-*-*)