[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, 78 insertions, 12 deletions

diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 8e2f466..7176037 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -14174,29 +14174,92 @@ values for @var{cpu} are
 @table @samp
 @opindex mA6
 @opindex mARC600
-@item ARC600
 @item arc600
 Compile for ARC600.  Aliases: @option{-mA6}, @option{-mARC600}.
 
-@item ARC601
 @item arc601
 @opindex mARC601
 Compile for ARC601.  Alias: @option{-mARC601}.
 
-@item ARC700
 @item arc700
 @opindex mA7
 @opindex mARC700
 Compile for ARC700.  Aliases: @option{-mA7}, @option{-mARC700}.
 This is the default when configured with @option{--with-cpu=arc700}@.
 
-@item ARCEM
 @item arcem
 Compile for ARC EM.
 
-@item ARCHS
 @item archs
 Compile for ARC HS.
+
+@item em
+@opindex em
+Compile for ARC EM cpu with no hardware extension.
+
+@item em4
+@opindex em4
+Compile for ARC EM4 cpu.
+
+@item em4_dmips
+@opindex em4_dmips
+Compile for ARC EM4 DMIPS cpu.
+
+@item em4_fpus
+@opindex em4_fpus
+Compile for ARC EM4 DMIPS cpu with single precision floating point
+extension.
+
+@item em4_fpuda
+@opindex em4_fpuda
+Compile for ARC EM4 DMIPS cpu with single precision floating point and
+double assists instructions.
+
+@item hs
+@opindex hs
+Compile for ARC HS cpu with no hardware extension, except the atomic
+instructions.
+
+@item hs34
+@opindex hs34
+Compile for ARC HS34 cpu.
+
+@item hs38
+@opindex hs38
+Compile for ARC HS38 cpu.
+
+@item hs38_linux
+@opindex hs38_linux
+Compile for ARC HS38 cpu with all hardware extensions on.
+
+@item arc600_norm
+@opindex arc600_norm
+Compile for ARC 600 cpu with norm instruction enabled.
+
+@item arc600_mul32x16
+@opindex arc600_mul32x16
+Compile for ARC 600 cpu with norm and mul32x16 instructions enabled.
+
+@item arc600_mul64
+@opindex arc600_mul64
+Compile for ARC 600 cpu with norm and mul64 instructions enabled.
+
+@item arc601_norm
+@opindex arc601_norm
+Compile for ARC 601 cpu with norm instruction enabled.
+
+@item arc601_mul32x16
+@opindex arc601_mul32x16
+Compile for ARC 601 cpu with norm and mul32x16 instructions enabled.
+
+@item arc601_mul64
+@opindex arc601_mul64
+Compile for ARC 601 cpu with norm and mul64 instructions enabled.
+
+@item nps400
+@opindex nps400
+Compile for ARC 700 on NPS400 chip.
+
 @end table
 
 @item -mdpfp
@@ -14223,7 +14286,8 @@ supported.  This is always enabled for @option{-mcpu=ARC700}.
 
 @item -mno-mpy
 @opindex mno-mpy
-Do not generate mpy instructions for ARC700.
+Do not generate mpy instructions for ARC700.  This instruction is
+deprecated.
 
 @item -mmul32x16
 @opindex mmul32x16
@@ -14430,12 +14494,14 @@ define preprocessor macro symbols.
 @item -mdsp-packa
 @opindex mdsp-packa
 Passed down to the assembler to enable the DSP Pack A extensions.
-Also sets the preprocessor symbol @code{__Xdsp_packa}.
+Also sets the preprocessor symbol @code{__Xdsp_packa}.  This option is
+deprecated.
 
 @item -mdvbf
 @opindex mdvbf
 Passed down to the assembler to enable the dual viterbi butterfly
-extension.  Also sets the preprocessor symbol @code{__Xdvbf}.
+extension.  Also sets the preprocessor symbol @code{__Xdvbf}.  This
+option is deprecated.
 
 @c ARC700 4.10 extension instruction
 @item -mlock
@@ -14447,19 +14513,19 @@ Conditional extension.  Also sets the preprocessor symbol
 @item -mmac-d16
 @opindex mmac-d16
 Passed down to the assembler.  Also sets the preprocessor symbol
-@code{__Xxmac_d16}.
+@code{__Xxmac_d16}.  This option is deprecated.
 
 @item -mmac-24
 @opindex mmac-24
 Passed down to the assembler.  Also sets the preprocessor symbol
-@code{__Xxmac_24}.
+@code{__Xxmac_24}.  This option is deprecated.
 
 @c ARC700 4.10 extension instruction
 @item -mrtsc
 @opindex mrtsc
 Passed down to the assembler to enable the 64-bit Time-Stamp Counter
 extension instruction.  Also sets the preprocessor symbol
-@code{__Xrtsc}.
+@code{__Xrtsc}.  This option is deprecated.
 
 @c ARC700 4.10 extension instruction
 @item -mswape
@@ -14472,7 +14538,7 @@ extension instruction.  Also sets the preprocessor symbol
 @opindex mtelephony
 Passed down to the assembler to enable dual and single operand
 instructions for telephony.  Also sets the preprocessor symbol
-@code{__Xtelephony}.
+@code{__Xtelephony}.  This option is deprecated.
 
 @item -mxy
 @opindex mxy