I'm seeing hundreds of
In file included from ../../../libgcc/libgcc2.c:56:
../../../libgcc/libgcc2.h:32:13: warning: conflicting types for built-in function ‘__gcc_nested_func_ptr_created’; expected ‘void(void *, void *, void *)’
+[-Wbuiltin-declaration-mismatch]
   32 | extern void __gcc_nested_func_ptr_created (void *, void *, void **);
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
warnings.

Either we need to add like in r14-6218
  #pragma GCC diagnostic ignored "-Wbuiltin-declaration-mismatch"
(but in that case because of the libgcc2.h prototype (why is it there?)
it would need to be also with #pragma GCC diagnostic push/pop around),
or we could go with just following how the builtins are prototyped on the
compiler side and only cast to void ** when dereferencing (which is in
a single spot in each TU).

2024-02-01  Jakub Jelinek  <jakub@redhat.com>

	PR libgcc/113402
	* libgcc2.h (__gcc_nested_func_ptr_created): Change type of last
	argument from void ** to void *.
	* config/i386/heap-trampoline.c (__gcc_nested_func_ptr_created):
	Change type of dst from void ** to void * and cast dst to void **
	before dereferencing it.
	* config/aarch64/heap-trampoline.c (__gcc_nested_func_ptr_created):
	Likewise.

The symbols for the functions supporting heap-based trampolines were
exported at an incorrect symbol version, the following patch fixes that.

As requested in the PR, this also renames __builtin_nested_func_ptr* to
__gcc_nested_func_ptr*.  In carrying our the rename, we move the builtins
to use DEF_EXT_LIB_BUILTIN.

	PR libgcc/113402

gcc/ChangeLog:

	* builtins.cc (expand_builtin): Handle BUILT_IN_GCC_NESTED_PTR_CREATED
	and BUILT_IN_GCC_NESTED_PTR_DELETED.
	* builtins.def (BUILT_IN_GCC_NESTED_PTR_CREATED,
	BUILT_IN_GCC_NESTED_PTR_DELETED): Make these builtins LIB-EXT and
	rename the library fallbacks to __gcc_nested_func_ptr_created and
	__gcc_nested_func_ptr_deleted.
	* doc/invoke.texi: Rename these to __gcc_nested_func_ptr_created
	and __gcc_nested_func_ptr_deleted.
	* tree-nested.cc (finalize_nesting_tree_1): Use builtin_explicit for
	BUILT_IN_GCC_NESTED_PTR_CREATED and BUILT_IN_GCC_NESTED_PTR_DELETED.
	* tree.cc (build_common_builtin_nodes): Build the
	BUILT_IN_GCC_NESTED_PTR_CREATED and BUILT_IN_GCC_NESTED_PTR_DELETED local
	builtins only for non-explicit.

libgcc/ChangeLog:

	* config/aarch64/heap-trampoline.c: Rename
	__builtin_nested_func_ptr_created to __gcc_nested_func_ptr_created and
	__builtin_nested_func_ptr_deleted to __gcc_nested_func_ptr_deleted.
	* config/i386/heap-trampoline.c: Likewise.
	* libgcc2.h: Likewise.
	* libgcc-std.ver.in (GCC_7.0.0): Likewise and then move
	__gcc_nested_func_ptr_created and
	__gcc_nested_func_ptr_deleted from this symbol version to ...
	(GCC_14.0.0): ... this one.

Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
Co-authored-by: Jakub Jelinek <jakub@redhat.com>

As discussed on IRC, the following patch uses may_alias attribute, so that
on targets like aarch64 where abi_limb_mode != limb_mode the library
accesses the limbs (half limbs of the ABI) in the arrays with conservative
alias set.

2024-01-12  Jakub Jelinek  <jakub@redhat.com>

	* libgcc2.h (UBILtype): New typedef with may_alias attribute.
	(__mulbitint3, __divmodbitint4): Use UBILtype * instead of
	UWtype * and const UBILtype * instead of const UWtype *.
	* libgcc2.c (bitint_reduce_prec, bitint_mul_1, bitint_addmul_1,
	__mulbitint3, bitint_negate, bitint_submul_1, __divmodbitint4):
	Likewise.
	* soft-fp/bitint.h (UBILtype): Change define into a typedef with
	may_alias attribute.

This patch adds the strub attribute for function and variable types,
command-line options, passes and adjustments to implement it,
documentation, and tests.

Stack scrubbing is implemented in a machine-independent way: functions
with strub enabled are modified so that they take an extra stack
watermark argument, that they update with their stack use, and the
caller can then zero it out once it regains control, whether by return
or exception.  There are two ways to go about it: at-calls, that
modifies the visible interface (signature) of the function, and
internal, in which the body is moved to a clone, the clone undergoes
the interface change, and the function becomes a wrapper, preserving
its original interface, that calls the clone and then clears the stack
used by it.

Variables can also be annotated with the strub attribute, so that
functions that read from them get stack scrubbing enabled implicitly,
whether at-calls, for functions only usable within a translation unit,
or internal, for functions whose interfaces must not be modified.

There is a strict mode, in which functions that have their stack
scrubbed can only call other functions with stack-scrubbing
interfaces, or those explicitly marked as callable from strub
contexts, so that an entire call chain gets scrubbing, at once or
piecemeal depending on optimization levels.  In the default mode,
relaxed, this requirement is not enforced by the compiler.

The implementation adds two IPA passes, one that assigns strub modes
early on, another that modifies interfaces and adds calls to the
builtins that jointly implement stack scrubbing.  Another builtin,
that obtains the stack pointer, is added for use in the implementation
of the builtins, whether expanded inline or called in libgcc.

There are new command-line options to change operation modes and to
force the feature disabled; it is enabled by default, but it has no
effect and is implicitly disabled if the strub attribute is never
used.  There are also options meant to use for testing the feature,
enabling different strubbing modes for all (viable) functions.


for  gcc/ChangeLog

	* Makefile.in (OBJS): Add ipa-strub.o.
	(GTFILES): Add ipa-strub.cc.
	* builtins.def (BUILT_IN_STACK_ADDRESS): New.
	(BUILT_IN___STRUB_ENTER): New.
	(BUILT_IN___STRUB_UPDATE): New.
	(BUILT_IN___STRUB_LEAVE): New.
	* builtins.cc: Include ipa-strub.h.
	(STACK_STOPS, STACK_UNSIGNED): Define.
	(expand_builtin_stack_address): New.
	(expand_builtin_strub_enter): New.
	(expand_builtin_strub_update): New.
	(expand_builtin_strub_leave): New.
	(expand_builtin): Call them.
	* common.opt (fstrub=*): New options.
	* doc/extend.texi (strub): New type attribute.
	(__builtin_stack_address): New function.
	(Stack Scrubbing): New section.
	* doc/invoke.texi (-fstrub=*): New options.
	(-fdump-ipa-*): New passes.
	* gengtype-lex.l: Ignore multi-line pp-directives.
	* ipa-inline.cc: Include ipa-strub.h.
	(can_inline_edge_p): Test strub_inlinable_to_p.
	* ipa-split.cc: Include ipa-strub.h.
	(execute_split_functions): Test strub_splittable_p.
	* ipa-strub.cc, ipa-strub.h: New.
	* passes.def: Add strub_mode and strub passes.
	* tree-cfg.cc (gimple_verify_flow_info): Note on debug stmts.
	* tree-pass.h (make_pass_ipa_strub_mode): Declare.
	(make_pass_ipa_strub): Declare.
	(make_pass_ipa_function_and_variable_visibility): Fix
	formatting.
	* tree-ssa-ccp.cc (optimize_stack_restore): Keep restores
	before strub leave.
	* attribs.cc: Include ipa-strub.h.
	(decl_attributes): Support applying attributes to function
	type, rather than pointer type, at handler's request.
	(comp_type_attributes): Combine strub_comptypes and target
	comp_type results.
	* doc/tm.texi.in (TARGET_STRUB_USE_DYNAMIC_ARRAY): New.
	(TARGET_STRUB_MAY_USE_MEMSET): New.
	* doc/tm.texi: Rebuilt.
	* cgraph.h (symtab_node::reset): Add preserve_comdat_group
	param, with a default.
	* cgraphunit.cc (symtab_node::reset): Use it.

for  gcc/c-family/ChangeLog

	* c-attribs.cc: Include ipa-strub.h.
	(handle_strub_attribute): New.
	(c_common_attribute_table): Add strub.

for  gcc/ada/ChangeLog

	* gcc-interface/trans.cc: Include ipa-strub.h.
	(gigi): Make internal decls for targets of compiler-generated
	calls strub-callable too.
	(build_raise_check): Likewise.
	* gcc-interface/utils.cc: Include ipa-strub.h.
	(handle_strub_attribute): New.
	(gnat_internal_attribute_table): Add strub.

for  gcc/testsuite/ChangeLog

	* c-c++-common/strub-O0.c: New.
	* c-c++-common/strub-O1.c: New.
	* c-c++-common/strub-O2.c: New.
	* c-c++-common/strub-O2fni.c: New.
	* c-c++-common/strub-O3.c: New.
	* c-c++-common/strub-O3fni.c: New.
	* c-c++-common/strub-Og.c: New.
	* c-c++-common/strub-Os.c: New.
	* c-c++-common/strub-all1.c: New.
	* c-c++-common/strub-all2.c: New.
	* c-c++-common/strub-apply1.c: New.
	* c-c++-common/strub-apply2.c: New.
	* c-c++-common/strub-apply3.c: New.
	* c-c++-common/strub-apply4.c: New.
	* c-c++-common/strub-at-calls1.c: New.
	* c-c++-common/strub-at-calls2.c: New.
	* c-c++-common/strub-defer-O1.c: New.
	* c-c++-common/strub-defer-O2.c: New.
	* c-c++-common/strub-defer-O3.c: New.
	* c-c++-common/strub-defer-Os.c: New.
	* c-c++-common/strub-internal1.c: New.
	* c-c++-common/strub-internal2.c: New.
	* c-c++-common/strub-parms1.c: New.
	* c-c++-common/strub-parms2.c: New.
	* c-c++-common/strub-parms3.c: New.
	* c-c++-common/strub-relaxed1.c: New.
	* c-c++-common/strub-relaxed2.c: New.
	* c-c++-common/strub-short-O0-exc.c: New.
	* c-c++-common/strub-short-O0.c: New.
	* c-c++-common/strub-short-O1.c: New.
	* c-c++-common/strub-short-O2.c: New.
	* c-c++-common/strub-short-O3.c: New.
	* c-c++-common/strub-short-Os.c: New.
	* c-c++-common/strub-strict1.c: New.
	* c-c++-common/strub-strict2.c: New.
	* c-c++-common/strub-tail-O1.c: New.
	* c-c++-common/strub-tail-O2.c: New.
	* c-c++-common/torture/strub-callable1.c: New.
	* c-c++-common/torture/strub-callable2.c: New.
	* c-c++-common/torture/strub-const1.c: New.
	* c-c++-common/torture/strub-const2.c: New.
	* c-c++-common/torture/strub-const3.c: New.
	* c-c++-common/torture/strub-const4.c: New.
	* c-c++-common/torture/strub-data1.c: New.
	* c-c++-common/torture/strub-data2.c: New.
	* c-c++-common/torture/strub-data3.c: New.
	* c-c++-common/torture/strub-data4.c: New.
	* c-c++-common/torture/strub-data5.c: New.
	* c-c++-common/torture/strub-indcall1.c: New.
	* c-c++-common/torture/strub-indcall2.c: New.
	* c-c++-common/torture/strub-indcall3.c: New.
	* c-c++-common/torture/strub-inlinable1.c: New.
	* c-c++-common/torture/strub-inlinable2.c: New.
	* c-c++-common/torture/strub-ptrfn1.c: New.
	* c-c++-common/torture/strub-ptrfn2.c: New.
	* c-c++-common/torture/strub-ptrfn3.c: New.
	* c-c++-common/torture/strub-ptrfn4.c: New.
	* c-c++-common/torture/strub-pure1.c: New.
	* c-c++-common/torture/strub-pure2.c: New.
	* c-c++-common/torture/strub-pure3.c: New.
	* c-c++-common/torture/strub-pure4.c: New.
	* c-c++-common/torture/strub-run1.c: New.
	* c-c++-common/torture/strub-run2.c: New.
	* c-c++-common/torture/strub-run3.c: New.
	* c-c++-common/torture/strub-run4.c: New.
	* c-c++-common/torture/strub-run4c.c: New.
	* c-c++-common/torture/strub-run4d.c: New.
	* c-c++-common/torture/strub-run4i.c: New.
	* g++.dg/strub-run1.C: New.
	* g++.dg/torture/strub-init1.C: New.
	* g++.dg/torture/strub-init2.C: New.
	* g++.dg/torture/strub-init3.C: New.
	* gnat.dg/strub_attr.adb, gnat.dg/strub_attr.ads: New.
	* gnat.dg/strub_ind.adb, gnat.dg/strub_ind.ads: New.

for  libgcc/ChangeLog

	* Makefile.in (LIB2ADD): Add strub.c.
	* libgcc2.h (__strub_enter, __strub_update, __strub_leave):
	Declare.
	* strub.c: New.
	* libgcc-std.ver.in (__strub_enter): Add to GCC_14.0.0.
	(__strub_update, __strub_leave): Likewise.

Add support for heap-based trampolines on x86_64-linux, aarch64-linux,
and x86_64-darwin. Implement the __builtin_nested_func_ptr_created and
__builtin_nested_func_ptr_deleted functions for these targets.

Co-Authored-By: Maxim Blinov <maxim.blinov@embecosm.com>
Co-Authored-By: Iain Sandoe <iain@sandoe.co.uk>
Co-Authored-By: Francois-Xavier Coudert <fxcoudert@gcc.gnu.org>

libgcc/ChangeLog:

	* libgcc2.h (__builtin_nested_func_ptr_created): Declare.
	(__builtin_nested_func_ptr_deleted): Declare.
	* libgcc-std.ver.in: Add the new symbols.
	* config/aarch64/heap-trampoline.c: Implement heap-based
	trampolines for aarch64.
	* config/aarch64/t-heap-trampoline: Add rule to build
	config/aarch64/heap-trampoline.c
	* config/i386/heap-trampoline.c: Implement heap-based
	trampolines for x86_64.
	* config/i386/t-heap-trampoline: Add rule to build
	config/i386/heap-trampoline.cc
	* config.host: Handle --enable-heap-trampolines on
	x86_64-*-linux*, aarch64-*-linux*, x86_64-*-darwin*.

This patch adds the library helpers for multiplication, division + modulo
and casts from and to floating point (both binary and decimal).
As described in the intro, the first step is try to reduce further the
passed in precision by skipping over most significant limbs with just zeros
or sign bit copies.  For multiplication and division I've implemented
a simple algorithm, using something smarter like Karatsuba or Toom N-Way
might be faster for very large _BitInts (which we don't support right now
anyway), but could mean more code in libgcc, which maybe isn't what people
are willing to accept.
For the to/from floating point conversions the patch uses soft-fp, because
it already has tons of handy macros which can be used for that.  In theory
it could be implemented using {,unsigned} long long or {,unsigned} __int128
to/from floating point conversions with some frexp before/after, but at that
point we already need to force it into integer registers and analyze it
anyway.  Plus, for 32-bit arches there is no __int128 that could be used
for XF/TF mode stuff.
I know that soft-fp is owned by glibc and I think the op-common.h change
should be propagated there, but the bitint stuff is really GCC specific
and IMHO doesn't belong into the glibc copy.

2023-09-06  Jakub Jelinek  <jakub@redhat.com>

	PR c/102989
libgcc/
	* config/aarch64/t-softfp (softfp_extras): Use += rather than :=.
	* config/i386/64/t-softfp (softfp_extras): Likewise.
	* config/i386/libgcc-glibc.ver (GCC_14.0.0): Export _BitInt support
	routines.
	* config/i386/t-softfp (softfp_extras): Add fixxfbitint and
	bf, hf and xf mode floatbitint.
	(CFLAGS-floatbitintbf.c, CFLAGS-floatbitinthf.c): Add -msse2.
	* config/riscv/t-softfp32 (softfp_extras): Use += rather than :=.
	* config/rs6000/t-e500v1-fp (softfp_extras): Likewise.
	* config/rs6000/t-e500v2-fp (softfp_extras): Likewise.
	* config/t-softfp (softfp_floatbitint_funcs): New.
	(softfp_bid_list): New.
	(softfp_func_list): Add sf and df mode from and to _BitInt libcalls.
	(softfp_bid_file_list): New.
	(LIB2ADD_ST): Add $(softfp_bid_file_list).
	* config/t-softfp-sfdftf (softfp_extras): Add fixtfbitint and
	floatbitinttf.
	* config/t-softfp-tf (softfp_extras): Likewise.
	* libgcc2.c (bitint_reduce_prec): New inline function.
	(BITINT_INC, BITINT_END): Define.
	(bitint_mul_1, bitint_addmul_1): New helper functions.
	(__mulbitint3): New function.
	(bitint_negate, bitint_submul_1): New helper functions.
	(__divmodbitint4): New function.
	* libgcc2.h (LIBGCC2_UNITS_PER_WORD): When building _BitInt support
	libcalls, redefine depending on __LIBGCC_BITINT_LIMB_WIDTH__.
	(__mulbitint3, __divmodbitint4): Declare.
	* libgcc-std.ver.in (GCC_14.0.0): Export _BitInt support routines.
	* Makefile.in (lib2funcs): Add _mulbitint3.
	(LIB2_DIVMOD_FUNCS): Add _divmodbitint4.
	* soft-fp/bitint.h: New file.
	* soft-fp/fixdfbitint.c: New file.
	* soft-fp/fixsfbitint.c: New file.
	* soft-fp/fixtfbitint.c: New file.
	* soft-fp/fixxfbitint.c: New file.
	* soft-fp/floatbitintbf.c: New file.
	* soft-fp/floatbitintdf.c: New file.
	* soft-fp/floatbitinthf.c: New file.
	* soft-fp/floatbitintsf.c: New file.
	* soft-fp/floatbitinttf.c: New file.
	* soft-fp/floatbitintxf.c: New file.
	* soft-fp/op-common.h (_FP_FROM_INT): Add support for rsize up to
	4 * _FP_W_TYPE_SIZE rather than just 2 * _FP_W_TYPE_SIZE.
	* soft-fp/bitintpow10.c: New file.
	* soft-fp/fixsdbitint.c: New file.
	* soft-fp/fixddbitint.c: New file.
	* soft-fp/fixtdbitint.c: New file.
	* soft-fp/floatbitintsd.c: New file.
	* soft-fp/floatbitintdd.c: New file.
	* soft-fp/floatbitinttd.c: New file.

This patch updates the IEEE 128-bit types used in libgcc.

At the moment, we cannot build GCC when the target uses IEEE 128-bit long
doubles, such as building the compiler for a native Fedora 36 system.  The
build dies when it is trying to build the _mulkc3.c and _divkc3 modules.

This patch changes libgcc to use long double for the IEEE 128-bit base type if
long double is IEEE 128-bit, and it uses _Float128 otherwise.  The built-in
functions are adjusted to be the correct version based on the IEEE 128-bit base
type used.

While it is desirable to ultimately have __float128 and _Float128 use the same
internal type and mode within GCC, at present if you use the option
-mabi=ieeelongdouble, the __float128 type will use the long double type and not
the _Float128 type.  We get an internal compiler error if we combine the
signbitf128 built-in with a long double type.

I've gone through several iterations of trying to fix this within GCC, and
there are various problems that have come up.  I developed this alternative
patch that changes libgcc so that it does not tickle the issue.  I hope we can
fix the compiler at some point, but right now, this is preventing people on
Fedora 36 systems from building compilers where the default long double is IEEE
128-bit.

2023-03-06   Michael Meissner  <meissner@linux.ibm.com>

libgcc/

	PR target/107299
	* config/rs6000/_divkc3.c (COPYSIGN): Use the correct built-in based on
	whether long double is IBM or IEEE.
	(INFINITY): Likewise.
	(FABS): Likewise.
	* config/rs6000/_mulkc3.c (COPYSIGN): Likewise.
	(INFINITY): Likewise.
	* config/rs6000/quad-float128.h (TF): Remove definition.
	(TFtype): Define to be long double or _Float128.
	(TCtype): Define to be _Complex long double or _Complex _Float128.
	* libgcc2.h (TFtype): Allow machine config files to override this.
	(TCtype): Likewise.
	* soft-fp/quad.h (TFtype): Likewise.

libgcc/

	* libgcc2.c (__addvSI3): Use overflow builtins.
	(__addvsi3, __addvDI3 ,__subvSI3, __subvsi3): Likewise.
	(__subvDI3 __mulvSI3, __mulvsi3, __negvSI2): Likewise.
	(__negvsi2, __negvDI2): Likewise.
	(__cmpdi2, __ucmpdi2): Adjust implementation to improve
	generated code.
	* libgcc2.h (__ucmpdi2): Adjust prototype.

From-SVN: r279813

gcc/ChangeLog:

	* doc/extend.texi (__clear_cache): Correct signature.

libgcc/ChangeLog:

	* libgcc2.h (__clear_cache): Correct signature.
	* libgcc2.c (__clear_cache): Same.

gcc/testsuite/ChangeLog:

	* gcc.dg/Wbuiltin-declaration-mismatch-12.c: New test.

From-SVN: r269082

From-SVN: r267494

From-SVN: r256169

From-SVN: r243994

	* Makefile.in (LIB2_DIVMOD_FUNCS): Add _divmoddi4.
	* libgcc2.c (__divmoddi4): New function.
	* libgcc2.h (__divmoddi4): Declare.
	* libgcc-std.ver.in (GCC_7.0.0): New. Add __PFX_divmoddi4
	and __PFX_divmodti4.

From-SVN: r241804

This patch arranges for half-precision complex multiply and divide
routines to be built if __LIBGCC_HAS_HF_MODE__.  This will be true
if the target supports the _Float16 type.

libgcc/

	PR target/63250
	*  Makefile.in (lib2funcs): Build _mulhc3 and _divhc3.
	* libgcc2.h (LIBGCC_HAS_HF_MODE): Conditionally define.
	(HFtype): Likewise.
	(HCtype): Likewise.
	(__divhc3): Likewise.
	(__mulhc3): Likewise.
	* libgcc2.c: Support _mulhc3 and _divhc3.

From-SVN: r240043

From-SVN: r232055

libgcc/ChangeLog:

2015-11-07  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>

	* config/visium/lib2funcs.c (__set_trampoline_parity): Use
	__CHAR_BIT__ instead of BITS_PER_UNIT.
	* fixed-bit.h: Likewise.
	* fp-bit.h: Likewise.
	* libgcc2.c (__popcountSI2): Likewise.
	(__popcountDI2): Likewise.
	* libgcc2.h: Likewise.
	* libgcov.h: Likewise.

libobjc/ChangeLog:

2015-11-07  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>

	PR libobjc/24775
	* encoding.c (_darwin_rs6000_special_round_type_align): Use
	__CHAR_BIT__ instead of BITS_PER_UNIT.
	(objc_sizeof_type): Likewise.
	(objc_layout_structure): Likewise.
	(objc_layout_structure_next_member): Likewise.
	(objc_layout_finish_structure): Likewise.
	(objc_layout_structure_get_info): Likewise.

From-SVN: r229936

From-SVN: r219188

This patch removes the target macro LIBGCC2_LONG_DOUBLE_TYPE_SIZE.

After recent changes, this macro was used in two ways in libgcc: to
determine the mode of long double in dfp-bit.h, and to determine
whether a particular mode has excess precision for use in complex
multiplication.

The former is concerned specifically with long double: it relates to
use of strtold for converting between decimal and binary floating
point.  This is replaced by comparing __LDBL_MANT_DIG__ with the
appropriate __LIBGCC_*_MANT_DIG__ macro.  The latter is replaced
__LIBGCC_*_EXCESS_PRECISION__ predefined macros.

Remarks:

* Comparing (__LDBL_MANT_DIG__ == __LIBGCC_XF_MANT_DIG__) is more
  fragile than it looks; it's possible for XFmode to have 53-bit
  mantissa (TARGET_96_ROUND_53_LONG_DOUBLE, on FreeBSD and
  DragonFlyBSD 32-bit), in which case such a comparison would not
  distinguish XFmode and DFmode as possible modes for long double.
  Fortunately, no target supporting that form of XFmode also supports
  long double = double (but if some target did, we'd need e.g. an
  additional macro giving the exponent range of each mode).

  Furthermore, this code doesn't actually get used for x86 (or any
  other target with XFmode support), because x86 uses BID not DPD and
  BID has its own conversion code (which handles conversions for both
  XFmode and TFmode without needing to go via strtold).  And FreeBSD
  and DragonFlyBSD aren't among the targets with DFP support.  So
  while in principle this code is fragile and it's a deficiency that
  it can't support both XFmode and TFmode at once (something that
  can't be solved with the string conversion approach without libc
  having TS 18661 functions such as strtof128), all these issues
  should not be a problem in practice.

* If other cases of excess precision are supported in future, the code
  for defining __LIBGCC_*_EXCESS_PRECISION__ may need updating.
  Although the most likely such cases might not actually involve
  excess precision for any mode used in libgcc - FLT_EVAL_METHOD being
  32 to do _Float16 arithmetic on _Float32 should have the effect of
  _Complex _Float16 arithmetic using __mulsc3 and __divsc3, rather
  than currently nonexistent __mulhc3 and __divhc3 as in bug 63250 for
  ARM.

* As has been noted in the context of simultaneous support for
  __float128 and __ibm128 on Power, the semantics of macros such as
  LONG_DOUBLE_TYPE_SIZE are problematic because they rely on a
  poorly-defined precision value for floating-point modes (which seems
  to be intended as the number of significant bits in the
  representation, e.g. 80 for XFmode which may be either 12 or 16
  bytes) uniquely identifying a mode (although defining an arbitrarily
  different value for one of the modes you wish to distinguish may
  work as a hack).  It would be cleaner to have a target hook that
  gives a machine mode directly for float, double and long double,
  rather than going via these precision values.  By eliminating all
  use of these macros (FLOAT_TYPE_SIZE, DOUBLE_TYPE_SIZE,
  LONG_DOUBLE_TYPE_SIZE) from code built for the target, this patch
  facilitates such a conversion to a hook (which I suppose would take
  some suitable enum as an argument to identify which of the three
  types to return a mode for).

  (The issue of multiple type support for DFP conversions would apply
  in that Power case.
  <https://gcc.gnu.org/ml/gcc-patches/2014-07/msg01084.html> doesn't
  seem to touch on it, but it would seem reasonable to punt on it
  initially as hard to fix.  There would also be the issue of getting
  functions such as __powikf2, __mulkc3, __divkc3 defined, but that's
  rather easier to address.)

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

gcc:
	* doc/tm.texi.in (LIBGCC2_LONG_DOUBLE_TYPE_SIZE): Remove.
	* doc/tm.texi: Regenerate.
	* system.h (LIBGCC2_LONG_DOUBLE_TYPE_SIZE): Poison.
	* config/alpha/alpha.h (LIBGCC2_LONG_DOUBLE_TYPE_SIZE): Remove.
	* config/i386/i386-interix.h (LIBGCC2_LONG_DOUBLE_TYPE_SIZE):
	Remove.
	* config/i386/i386.h (LIBGCC2_LONG_DOUBLE_TYPE_SIZE): Remove.
	* config/i386/rtemself.h (LIBGCC2_LONG_DOUBLE_TYPE_SIZE): Remove.
	* config/ia64/ia64.h (LIBGCC2_LONG_DOUBLE_TYPE_SIZE): Remove.
	* config/m68k/m68k.h (LIBGCC2_LONG_DOUBLE_TYPE_SIZE): Remove.
	* config/m68k/netbsd-elf.h (LIBGCC2_LONG_DOUBLE_TYPE_SIZE):
	Remove.
	* config/mips/mips.h (LIBGCC2_LONG_DOUBLE_TYPE_SIZE): Remove.
	* config/mips/n32-elf.h (LIBGCC2_LONG_DOUBLE_TYPE_SIZE): Remove.
	* config/msp430/msp430.h (LIBGCC2_LONG_DOUBLE_TYPE_SIZE): Remove.
	* config/rl78/rl78.h (LIBGCC2_LONG_DOUBLE_TYPE_SIZE): Remove.
	* config/rs6000/rs6000.h (LIBGCC2_LONG_DOUBLE_TYPE_SIZE): Remove.
	* config/rx/rx.h (LIBGCC2_LONG_DOUBLE_TYPE_SIZE): Remove.
	* config/s390/s390.h (LIBGCC2_LONG_DOUBLE_TYPE_SIZE): Remove.
	* config/sparc/freebsd.h (LIBGCC2_LONG_DOUBLE_TYPE_SIZE): Remove.
	* config/sparc/linux.h (LIBGCC2_LONG_DOUBLE_TYPE_SIZE): Remove.
	* config/sparc/linux64.h (LIBGCC2_LONG_DOUBLE_TYPE_SIZE): Remove.
	* config/sparc/netbsd-elf.h (LIBGCC2_LONG_DOUBLE_TYPE_SIZE):
	Remove.

gcc/c-family:
	* c-cppbuiltin.c (c_cpp_builtins): Define
	__LIBGCC_*_EXCESS_PRECISION__ macros for supported floating-point
	modes.

libgcc:
	* dfp-bit.h (LIBGCC2_LONG_DOUBLE_TYPE_SIZE): Remove.
	(__LIBGCC_XF_MANT_DIG__): Define if not already defined.
	(LONG_DOUBLE_HAS_XF_MODE): Define in terms of
	__LIBGCC_XF_MANT_DIG__.
	(__LIBGCC_TF_MANT_DIG__): Define if not already defined.
	(LONG_DOUBLE_HAS_TF_MODE): Define in terms of
	__LIBGCC_TF_MANT_DIG__.
	* libgcc2.c (NOTRUNC): Define in terms of
	__LIBGCC_*_EXCESS_PRECISION__, not LIBGCC2_LONG_DOUBLE_TYPE_SIZE.
	* libgcc2.h (LIBGCC2_LONG_DOUBLE_TYPE_SIZE): Remove.

From-SVN: r215491

This patch removes the LIBGCC2_HAS_{SF,DF,XF,TF}_MODE target macros,
replacing them by predefines with -fbuilding-libgcc, together with a
target hook that can influence those predefines when needed.

The new default is that a floating-point mode is supported in libgcc
if (a) it passes the scalar_mode_supported_p hook (otherwise it's not
plausible for it to be supported in libgcc) and (b) it's one of those
four modes (since those are the modes for which libgcc hardcodes the
possibility of support).  The target hook can override the default
choice (in either direction) for modes that pass
scalar_mode_supported_p (although overriding in the direction of
returning true when the default would return false only makes sense if
all relevant functions are specially defined in libgcc for that
particular target).

The previous default settings depended on various settings such as
LIBGCC2_LONG_DOUBLE_TYPE_SIZE, as well as targets defining the above
target macros if the default wasn't correct.

The default scalar_mode_supported_p only declares a floating-point
mode to be supported if it matches one of float / double / long
double.  This means that in most cases where a mode is only supported
conditionally in libgcc (TFmode only supported if it's the mode of
long double, most commonly), the default gets things right.  Overrides
were needed in the following cases:

* SFmode would always have been supported in libgcc (the condition was
  BITS_PER_UNIT == 8, true for all current targets), but pdp11
  defaults to 64-bit float, and in that case SFmode would fail
  scalar_mode_supported_p.  I don't know if libgcc actually built for
  pdp11 (and the port may well no longer be being used), but this
  patch adds a scalar_mode_supported_p hook to it to ensure SFmode is
  treated as supported.

* Certain i386 and ia64 targets need the new hook to match the
  existing cases for when XFmode or TFmode support is present in
  libgcc.  For i386, the hook can always declare XFmode to be
  supported - the cases where it's not are the cases where long double
  is TFmode, in which case XFmode fails scalar_mode_supported_p[*] -
  but TFmode support needs to be conditional.  (And of the targets not
  defining LIBGCC2_HAS_TF_MODE before this patch, some defined
  LONG_DOUBLE_TYPE_SIZE to 64, so ensuring LIBGCC2_HAS_TF_MODE would
  always be false, while others did not define it, so allowing it to
  be true in the -mlong-double-128 case.  This patch matches that
  logic, although I suspect all the latter targets would have been
  broken if you tried to enable -mlong-double-128 by default, for lack
  of the soft-fp TFmode support in libgcc, which is separately
  configured.)

  [*] I don't know if it's deliberate not to support __float80 at all
  with -mlong-double-128.

In order to implement the default version of the new hook,
insn-modes.h was made to contain macros such as HAVE_TFmode for each
machine mode, so the default hook can contain conditionals on whether
XFmode and TFmode exist (to match the hardcoding of a list of modes in
libgcc).  This is also used in fortran/trans-types.c; previously it
had a conditional on defined(LIBGCC2_HAS_TF_MODE) (a bit dubious,
since it ignored the value of the macro), which is replaced by testing
defined(HAVE_TFmode), in conjunction with requiring
targetm.libgcc_floating_mode_supported_p.

(Fortran is testing something stronger than that hook: not only is
libgcc support required, but also libm or equivalent.  Thus, it has a
test for ENABLE_LIBQUADMATH_SUPPORT in the case that the mode is
TFmode and that's not the same as any of the three standard types.
The old and new tests are intended to accept exactly the same set of
modes for all targets.)

Apart from the four target macros eliminated by this patch, it gets us
closer to eliminating LIBGCC2_LONG_DOUBLE_TYPE_SIZE as well, though a
few more places using that macro need changing first.

Bootstrapped with no regressions on x86_64-unknown-linux-gnu; also
built cc1 for crosses to ia64-elf and pdp11-none as a minimal test of
changes for those targets.

gcc:
	* target.def (libgcc_floating_mode_supported_p): New hook.
	* targhooks.c (default_libgcc_floating_mode_supported_p): New
	function.
	* targhooks.h (default_libgcc_floating_mode_supported_p): Declare.
	* doc/tm.texi.in (LIBGCC2_HAS_DF_MODE, LIBGCC2_HAS_XF_MODE)
	(LIBGCC2_HAS_TF_MODE): Remove.
	(TARGET_LIBGCC_FLOATING_MODE_SUPPORTED_P): New @hook.
	* doc/tm.texi: Regenerate.
	* genmodes.c (emit_insn_modes_h): Define HAVE_%smode for each
	machine mode.
	* system.h (LIBGCC2_HAS_SF_MODE, LIBGCC2_HAS_DF_MODE)
	(LIBGCC2_HAS_XF_MODE, LIBGCC2_HAS_TF_MODE): Poison.
	* config/i386/cygming.h (LIBGCC2_HAS_TF_MODE): Remove.
	* config/i386/darwin.h (LIBGCC2_HAS_TF_MODE): Remove.
	* config/i386/djgpp.h (IX86_MAYBE_NO_LIBGCC_TFMODE): Define.
	* config/i386/dragonfly.h (LIBGCC2_HAS_TF_MODE): Remove.
	* config/i386/freebsd.h (LIBGCC2_HAS_TF_MODE): Remove.
	* config/i386/gnu-user-common.h (LIBGCC2_HAS_TF_MODE): Remove.
	* config/i386/i386-interix.h (IX86_NO_LIBGCC_TFMODE): Define.
	* config/i386/i386.c (ix86_libgcc_floating_mode_supported_p): New
	function.
	(TARGET_LIBGCC_FLOATING_MODE_SUPPORTED_P): Define.
	* config/i386/i386elf.h (IX86_MAYBE_NO_LIBGCC_TFMODE): Define.
	* config/i386/lynx.h (IX86_MAYBE_NO_LIBGCC_TFMODE): Define.
	* config/i386/netbsd-elf.h (IX86_MAYBE_NO_LIBGCC_TFMODE): Define.
	* config/i386/netbsd64.h (IX86_MAYBE_NO_LIBGCC_TFMODE): Define.
	* config/i386/nto.h (IX86_MAYBE_NO_LIBGCC_TFMODE): Define.
	* config/i386/openbsd.h (IX86_MAYBE_NO_LIBGCC_TFMODE): Define.
	* config/i386/openbsdelf.h (LIBGCC2_HAS_TF_MODE): Remove.
	* config/i386/rtemself.h (IX86_NO_LIBGCC_TFMODE): Define.
	* config/i386/sol2.h (LIBGCC2_HAS_TF_MODE): Remove.
	* config/i386/vx-common.h (IX86_MAYBE_NO_LIBGCC_TFMODE): Define.
	* config/ia64/elf.h (IA64_NO_LIBGCC_TFMODE): Define.
	* config/ia64/freebsd.h (IA64_NO_LIBGCC_TFMODE): Define.
	* config/ia64/hpux.h (LIBGCC2_HAS_XF_MODE, LIBGCC2_HAS_TF_MODE):
	Remove.
	* config/ia64/ia64.c (TARGET_LIBGCC_FLOATING_MODE_SUPPORTED_P):
	New macro.
	(ia64_libgcc_floating_mode_supported_p): New function.
	* config/ia64/linux.h (LIBGCC2_HAS_TF_MODE): Remove.
	* config/ia64/vms.h (IA64_NO_LIBGCC_XFMODE)
	(IA64_NO_LIBGCC_TFMODE): Define.
	* config/msp430/msp430.h (LIBGCC2_HAS_DF_MODE): Remove.
	* config/pdp11/pdp11.c (TARGET_SCALAR_MODE_SUPPORTED_P): New
	macro.
	(pdp11_scalar_mode_supported_p): New function.
	* config/rl78/rl78.h (LIBGCC2_HAS_DF_MODE): Remove.
	* config/rx/rx.h (LIBGCC2_HAS_DF_MODE): Remove.

gcc/c-family:
	* c-cppbuiltin.c (c_cpp_builtins): Define __LIBGCC_HAS_%s_MODE__
	macros for floating-point modes.

gcc/fortran:
	* trans-types.c (gfc_init_kinds): Check
	targetm.libgcc_floating_mode_supported_p for floating-point
	modes.  Check HAVE_TFmode instead of LIBGCC2_HAS_TF_MODE.

libgcc:
	* libgcc2.h (LIBGCC2_HAS_SF_MODE): Define using
	__LIBGCC_HAS_SF_MODE__.
	(LIBGCC2_HAS_DF_MODE): Define using __LIBGCC_HAS_DF_MODE__.
	(LIBGCC2_HAS_XF_MODE): Define using __LIBGCC_HAS_XF_MODE__.
	(LIBGCC2_HAS_TF_MODE): Define using __LIBGCC_HAS_TF_MODE__.
	* config/libbid/bid_gcc_intrinsics.h
	(LIBGCC2_LONG_DOUBLE_TYPE_SIZE): Do not define.
	(LIBGCC2_HAS_XF_MODE): Define using __LIBGCC_HAS_XF_MODE__.
	(LIBGCC2_HAS_TF_MODE): Define using __LIBGCC_HAS_TF_MODE__.
	* fixed-bit.h (LIBGCC2_LONG_DOUBLE_TYPE_SIZE): Do not define.
	(LIBGCC2_HAS_SF_MODE): Define using __LIBGCC_HAS_SF_MODE__.
	(LIBGCC2_HAS_DF_MODE): Define using __LIBGCC_HAS_DF_MODE__.

From-SVN: r215215

gcc:
	* config/i386/cygming.h (TF_SIZE): Remove.
	* config/i386/darwin.h (TF_SIZE): Remove.
	* config/i386/dragonfly.h (TF_SIZE): Remove.
	* config/i386/freebsd.h (TF_SIZE): Remove.
	* config/i386/gnu-user-common.h (TF_SIZE): Remove.
	* config/i386/openbsdelf.h (TF_SIZE): Remove.
	* config/i386/sol2.h (TF_SIZE): Remove.
	* config/ia64/hpux.h (XF_SIZE, TF_SIZE): Remove.
	* config/ia64/linux.h (TF_SIZE): Remove.
	* doc/tm.texi.in (SF_SIZE, DF_SIZE, XF_SIZE, TF_SIZE): Remove.
	* doc/tm.texi: Regenerate.
	* system.h (SF_SIZE, DF_SIZE, XF_SIZE, TF_SIZE): Poison.

gcc/c-family:
	* c-cppbuiltin.c (c_cpp_builtins): Define macros for mantissa
	digits of floating-point modes if -fbuilding-libgcc.

libgcc:
	* libgcc2.c (SF_SIZE): Change all uses to __LIBGCC_SF_MANT_DIG__.
	(DF_SIZE): Change all uses to __LIBGCC_DF_MANT_DIG__.
	(XF_SIZE): Change all uses to __LIBGCC_XF_MANT_DIG__.
	(TF_SIZE): Change all uses to __LIBGCC_TF_MANT_DIG__.
	* libgcc2.h (SF_SIZE): Change to __LIBGCC_SF_MANT_DIG__.  Give
	error if not defined and LIBGCC2_HAS_SF_MODE is defined.
	(DF_SIZE): Change to __LIBGCC_DF_MANT_DIG__.  Give error if not
	defined and LIBGCC2_HAS_DF_MODE is defined.
	(XF_SIZE): Change to __LIBGCC_XF_MANT_DIG__.  Give error if not
	defined and LIBGCC2_HAS_XF_MODE is defined.
	(TF_SIZE): Change to __LIBGCC_TF_MANT_DIG__.  Give error if not
	defined and LIBGCC2_HAS_TF_MODE is defined.

From-SVN: r215014

From-SVN: r206295

From-SVN: r195731

	toplevel:
	* Makefile.tpl (EXTRA_GCC_FLAGS): Remove LIBGCC2_CFLAGS,
	LIBGCC2_DEBUG_CFLAGS, LIBGCC2_INCLUDES.
	* Makefile.in: Regenerate.

	config:
	* mh-interix (LIBGCC2_DEBUG_CFLAGS): Remove.

	gcc:
	* Makefile.in (LIBGCC2_DEBUG_CFLAGS LIBGCC2_CFLAGS)
	(LIBGCC2_INCLUDES, TARGET_LIBGCC2_CFLAGS, LIB2FUNCS_EXTRA)
	(LIB2FUNCS_STATIC_EXTRA, LIB2FUNCS_EXCLUDE, T, T_TARGET)
	(INCLUDES_FOR_TARGET): Remove.
	(LIBGCC2_CFLAGS): Don't export.
	(LIB2FUNCS_ST, LIB2_DIVMOD_FUNCS, LIB2ADD, LIB2ADD_ST, srcdirify):
	Remove.
	(libgcc-support): Remove $(LIB2ADD), $(LIB2ADD_ST) dependencies.
	(libgcc.mvars): Likewise.
	Don't emit LIB2FUNCS_ST, LIB2FUNCS_EXCLUDE, LIB2ADD, LIB2ADD_ST,
	LIB2_SIDITI_CONV_FUNCS, LIB2_DIVMOD_FUNCS, LIBGCC2_CFLAGS,
	TARGET_LIBGCC2_CFLAGS.
	Emit GTHREAD_FLAGS.
	* libgcc2.c, libgcc2.h, gbl-ctors.h, longlong.h: Move to ../libgcc.
	* config/darwin-64.c: Move to ../libgcc/config.
	* config/divmod.c, config/floatunsidf.c, config/floatunsisf.c,
	config/floatunsitf.c, config/floatunsixf.c, config/udivmod.c,
	config/udivmodsi4.c: Move to ../libgcc/config.
	* config/gthr-posix.c: Move to ../libgcc/config/alpha.
	* config/memcmp.c, config/memcpy.c, config/memmove.c,
	config/memset.c: Move to ../libgcc/config.
	* config/t-darwin (TARGET_LIBGCC2_CFLAGS): Remove.
	* config/t-freebsd: Remove.
	* config/t-freebsd-thread: Move to ../libgcc/config.
	* config/t-libgcc-pic: Move to ../libgcc/config.
	* config/t-libunwind (TARGET_LIBGCC2_CFLAGS): Remove.
	* config/t-linux: Remove.
	* config/t-lynx (TARGET_LIBGCC2_CFLAGS, LIBGCC, INSTALL_LIBGCC):
	Remove
	* config/t-openbsd-thread: Move to ../libgcc/config.
	* config/t-rtems (LIBGCC2_INCLUDES): Remove.
	* config/t-sol2 (TARGET_LIBGCC2_CFLAGS): Remove.
	* config/t-svr4: Remove.
	* config/t-vxworks (LIBGCC, INSTALL_LIBGCC, TARGET_LIBGCC2_CFLAGS)
	(LIBGCC2_DEBUG_CFLAGS, LIB2FUNCS_EXTRA, LIBGCC2_INCLUDES): Remove.
	* config/vxlib.c, config/vxlib-tls.c: Move to ../libgcc/config.
	* config/alpha/qrnnd.asm: Move to ../libgcc/config/alpha/qrnnd.S.
	* config/alpha/t-alpha, config/alpha/t-ieee: Remove.
	* config/alpha/t-vms (LIB2FUNCS_EXTRA, LIBGCC, INSTALL_LIBGCC):
	Remove.
	* config/alpha/vms-gcc_shell_handler.c: Move to ../libgcc/config/alpha.
	* config/arm/bpabi.c, config/arm/unaligned-funcs.c,
	config/arm/fp16.c, config/arm/linux-atomic.c,
	config/arm/linux-atomic-64bit.c: Move to ../libgcc/config/arm.
	* config/arm/t-arm-elf (LIBGCC, INSTALL_LIBGCC)
	(TARGET_LIBGCC2_CFLAGS): Remove.
	* config/arm/t-bpabi, config/arm/t-linux: Remove.
	* config/arm/t-linux-eabi (TARGET_LIBGCC2_CFLAGS)
	(LIB2FUNCS_STATIC_EXTRA): Remove.
	* config/arm/t-netbsd: Remove.
	* config/arm/t-strongarm-elf (LIBGCC, INSTALL_LIBGCC)
	(TARGET_LIBGCC2_CFLAGS): Remove.
	* config/arm/t-symbian (LIB2FUNCS_STATIC_EXTRA): Remove.
	* config/arm/t-wince-pe (LIBGCC, INSTALL_LIBGCC)
	(TARGET_LIBGCC2_CFLAGS): Remove.
	* config/avr/t-avr (LIB2FUNCS_EXCLUDE, TARGET_LIBGCC2_CFLAGS)
	(LIBGCC, INSTALL_LIBGCC): Remove.
	* config/bfin/t-bfin-elf (TARGET_LIBGCC2_CFLAGS): Remove.
	* config/bfin/t-bfin-linux: Likewise.
	* config/bfin/t-bfin-uclinux: Likewise.
	* config/c6x/eqd.c, config/c6x/eqf.c, config/c6x/ged.c,
	config/c6x/gef.c, config/c6x/gtd.c, config/c6x/gtf.c,
	config/c6x/led.c, config/c6x/lef.c, config/c6x/ltd.c,
	config/c6x/ltf.c: Move to ../libgcc/config/c6x.
	* config/c6x/t-c6x-elf (LIB2FUNCS_EXCLUDE, LIB2FUNCS_EXTRA):
	Remove.
	* config/c6x/t-c6x-uclinux (TARGET_LIBGCC2_CFLAGS): Remove.
	* config/cris/arit.c: Move to ../libgcc/config/cris.
	* config/cris/cris_abi_symbol.c: Remove.
	* config/cris/cris.h: Remove obsolete comment.
	* config/cris/mulsi3.asm: Move to ../libgcc/config/cris/mulsi3.S.
	* config/cris/t-cris (LIB2FUNCS_EXTRA, CRIS_LIB1CSRC)
	($(LIB2FUNCS_EXTRA)): Remove.
	* config/cris/t-elfmulti (LIB2FUNCS_STATIC_EXTRA, INSTALL_LIBGCC)
	(LIBGCC): Remove.
	* config/cris/t-linux (TARGET_LIBGCC2_CFLAGS): Remove.
	* config/fr30/t-fr30: Remove.
	* config/frv/cmovd.c, config/frv/cmovh.c, config/frv/cmovw.c,
	config/frv/modi.c, config/frv/uitod.c, config/frv/uitof.c,
	config/frv/ulltod.c, config/frv/ulltof.c, config/frv/umodi.c: Move
	to ../libgcc/config/frv.
	* config/frv/t-frv (LIB2FUNCS_EXTRA, TARGET_LIBGCC2_CFLAGS)
	(cmovh.c, cmovw.c, cmovd.c, modi.c, umodi.c, uitof.c, uitod.c)
	(ulltof.c, LIBGCC, INSTALL_LIBGCC): Remove.
	* config/frv/t-linux (TARGET_LIBGCC2_CFLAGS): Remove.
	* config/h8300/clzhi2.c, config/h8300/ctzhi2.c,
	config/h8300/fixunssfsi.c, config/h8300/parityhi2.c,
	config/h8300/popcounthi2.c: Move to ../libgcc/config/h8300.
	* config/h8300/t-h8300 (LIB2FUNCS_EXTRA, TARGET_LIBGCC2_CFLAGS)
	(LIBGCC, INSTALL_LIBGCC): Remove.
	* config/i386/gthr-win32.c: Move to ../libgcc/config/i386.
	* config/i386/t-cygming (LIBGCC2_INCLUDES): Remove.
	* config/i386/t-cygwin: Remove.
	* config/i386/t-darwin (LIB2_SIDITI_CONV_FUNCS, LIB2FUNCS_EXTRA)
	(LIB2FUNCS_EXCLUDE): Remove.
	* config/i386/t-darwin64 (LIB2_SIDITI_CONV_FUNCS, LIB2FUNCS_EXTRA)
	(LIBGCC, INSTALL_LIBGCC): Remove.
	* config/i386/t-gthr-win32: Move to ../libgcc/config/i386.
	* config/i386/t-linux64 (LIBGCC, INSTALL_LIBGCC): Remove.
	* config/i386/t-mingw-w32: Likewise.
	* config/i386/t-mingw-w64: Likewise.
	* config/i386/t-openbsd: Likewise.
	* config/i386/t-nto: Remove.
	* config/ia64/quadlib.c: Move to ../libgcc/config/ia64.
	* config/ia64/t-hpux (LIBGCC, INSTALL_LIBGCC, LIB2FUNCS_EXTRA)
	(quadlib.c): Remove.
	* config/ia64/t-ia64: Remove comment.
	* config/iq2000/lib2extra-funcs.c: Move to
	../libgcc/config/iq2000/lib2funcs.c.
	* config/iq2000/t-iq2000: Remove.
	* config/m32c/m32c-lib2.c: Move to ../libgcc/config/m32c/lib2funcs.c.
	* config/m32c/m32c-lib2-trapv.c: Move to ../libgcc/config/m32c/trapv.c.
	* config/m32r/t-linux (TARGET_LIBGCC2_CFLAGS): Remove.
	* config/m32c/t-m32c (LIB2FUNCS_EXTRA): Remove.
	* config/m32r/t-m32r (TARGET_LIBGCC2_CFLAGS, LIBGCC)
	(INSTALL_LIBGCC): Remove.
	* config/m68k/fpgnulib.c: Move to ../libgcc/config/m68k.
	* config/m68k/t-floatlib: Remove.
	* config/m68k/t-mlibs (LIBGCC, INSTALL_LIBGCC): Remove.
	* config/mcore/t-mcore (TARGET_LIBGCC2_CFLAGS): Remove.
	Fix typo.
	(LIBGCC, INSTALL_LIBGCC): Remove.
	* config/mep/mep-lib2.c: Move to ../libgcc/config/mep/lib2funcs.c.
	* config/mep/mep-tramp.c: Move to ../libgcc/config/mep/tramp.c.
	* config/mep/t-mep (LIB2FUNCS_EXTRA): Remove.
	* config/mips/t-elf (TARGET_LIBGCC2_CFLAGS, LIBGCC)
	(INSTALL_LIBGCC): Remove.
	* config/mips/t-isa3264: Likewise.
	* config/mips/t-mips (LIB2_SIDITI_CONV_FUNCS): Remove.
	* config/mips/t-r3900 (TARGET_LIBGCC2_CFLAGS, LIBGCC)
	(INSTALL_LIBGCC): Remove.
	* config/mips/t-sde (LIBGCC, INSTALL_LIBGCC): Remove.
	* config/mips/t-sr71k (TARGET_LIBGCC2_CFLAGS, LIBGCC)
	(INSTALL_LIBGCC): Remove.
	* config/mips/t-vr (TARGET_LIBGCC2_CFLAGS)
	(LIB2FUNCS_STATIC_EXTRA): Remove.
	* config/mips/vr4120-div.S: Move to ../libgcc/config/mips.
	* config/mmix/t-mmix (TARGET_LIBGCC2_CFLAGS): Remove.
	* config/mn10300/t-mn10300 (LIBGCC, INSTALL_LIBGCC): Remove.
	* config/pa/fptr.c, config/pa/linux-atomic.c: Move to
	../libgcc/config/pa.
	* config/pa/lib2funcs.asm: Move to ../libgcc/config/pa/lib2funcs.S.
	* config/pa/quadlib.c: Move to ../libgcc/config/pa.
	* config/pa/t-dce-thr (LIBGCC, INSTALL_LIBGCC): Remove.
	* config/pa/t-linux, config/pa/t-linux64: Remove.
	* config/pa/t-pa-hpux, config/pa/t-pa-hpux10,
	config/pa/t-pa-hpux11, config/pa/t-pa64: Remove.
	* config/pdp11/t-pdp11 (TARGET_LIBGCC2_CFLAGS, LIB2FUNCS_EXTRA):
	Remove.
	* config/picochip/libgccExtras: Move to ../libgcc/config/picochip.
	* config/picochip/t-picochip (LIB2FUNCS_EXTRA, RANLIB_FOR_TARGET)
	(TARGET_LIBGCC2_CFLAGS, LIBGCC2_DEBUG_CFLAGS): Remove.
	* config/rs6000/crtresfpr.asm: Move to
	../libgcc/config/rs6000/crtresfpr.S.
	* config/rs6000/crtresgpr.asm: Move to
	../libgcc/config/rs6000/crtresgpr.S.
	* config/rs6000/crtresxfpr.asm: Move to
	../libgcc/config/rs6000/crtresxfpr.S.
	* config/rs6000/crtresxgpr.asm: Move to
	../libgcc/config/rs6000/crtresxgpr.S.
	* config/rs6000/crtsavfpr.asm: Move to
	../libgcc/config/rs6000/crtsavfpr.S.
	* config/rs6000/crtsavgpr.asm: Move to
	../libgcc/config/rs6000/crtsavgpr.S.
	* config/rs6000/darwin-asm.h: Move to ../libgcc/config/rs6000.
	* config/rs6000/darwin-fpsave.asm: Move to
	../libgcc/config/rs6000/darwin-fpsave.S.
	* config/rs6000/darwin-gpsave.asm: Move to
	../libgcc/config/rs6000/darwin-gpsave.S.
	* config/rs6000/darwin-tramp.asm: Move to
	../libgcc/config/rs6000/darwin-tramp.S.
	* config/rs6000/darwin-vecsave.asm: Move to
	../libgcc/config/rs6000/darwin-vecsave.S.
	* config/rs6000/darwin-world.asm: Move to
	../libgcc/config/rs6000/darwin-world.S.
	* config/rs6000/e500crtres32gpr.asm: Move to
	../libgcc/config/rs6000/e500crtres32gpr.S.
	* config/rs6000/e500crtres64gpr.asm: Move to
	../libgcc/config/rs6000/e500crtres64gpr.S.
	* config/rs6000/e500crtres64gprctr.asm: Move to
	../libgcc/config/rs6000/e500crtres64gprctr.S.
	* config/rs6000/e500crtrest32gpr.asm: Move to
	../libgcc/config/rs6000/e500crtrest32gpr.S.
	* config/rs6000/e500crtrest64gpr.asm: Move to
	../libgcc/config/rs6000/e500crtrest64gpr.S.
	* config/rs6000/e500crtresx32gpr.asm: Move to
	../libgcc/config/rs6000/e500crtresx32gpr.S.
	* config/rs6000/e500crtresx64gpr.asm: Move to
	../libgcc/config/rs6000/e500crtresx64gpr.S.
	* config/rs6000/e500crtsav32gpr.asm: Move to
	../libgcc/config/rs6000/e500crtsav32gpr.S.
	* config/rs6000/e500crtsav64gpr.asm: Move to
	../libgcc/config/rs6000/e500crtsav64gpr.S.
	* config/rs6000/e500crtsav64gprctr.asm: Move to
	../libgcc/config/rs6000/e500crtsav64gprctr.S.
	* config/rs6000/e500crtsavg32gpr.asm: Move to
	../libgcc/config/rs6000/e500crtsavg32gpr.S.
	* config/rs6000/e500crtsavg64gpr.asm: Move to
	../libgcc/config/rs6000/e500crtsavg64gpr.S.
	* config/rs6000/e500crtsavg64gprctr.asm: Move to
	../libgcc/config/rs6000/e500crtsavg64gprctr.S.
	* config/rs6000/eabi.asm: Move to ../libgcc/config/rs6000/eabi.S.
	* config/rs6000/t-aix43 (LIBGCC, INSTALL_LIBGCC, LIB2FUNCS_EXTRA)
	(TARGET_LIBGCC2_CFLAGS): Remove.
	* config/rs6000/t-aix52: Likewise.
	* config/rs6000/t-darwin: Remove.
	* config/rs6000/t-darwin64 (LIB2_SIDITI_CONV_FUNCS)
	(LIB2FUNCS_EXTRA): Remove.
	* config/rs6000/t-fprules (LIBGCC, INSTALL_LIBGCC): Remove.
	* config/rs6000/t-linux64 (TARGET_LIBGCC2_CFLAGS): Remove.
	* config/rs6000/t-lynx (LIB2FUNCS_EXTRA, tramp.S, LIBGCC)
	(INSTALL_LIBGCC): Remove.
	* config/rs6000/t-netbsd (LIB2FUNCS_EXTRA)
	(LIB2FUNCS_STATIC_EXTRA, tramp.S, crtsavfpr.S, crtresfpr.S)
	(crtsavgpr.S, crtresgpr.S, crtresxfpr.S, crtresxgpr.S, LIBGCC)
	(INSTALL_LIBGCC, $(T)crtsavfpr$(objext), $(T)crtresfpr$(objext))
	(($(T)crtsavgpr$(objext), $(T)crtresgpr$(objext),
	$(T)crtresxfpr$(objext), $(T)crtresxgpr$(objext)): Remove.
	* config/rs6000/t-ppccomm (LIB2FUNCS_EXTRA)
	(LIB2FUNCS_STATIC_EXTRA, eabi.S, tramp.S): Remove.
	* config/rs6000/t-spe (LIBGCC, INSTALL_LIBGCC): Remove.
	* config/rs6000/t-vxworks: Remove comment.
	* config/rs6000/tramp.asm: Move to ../libgcc/config/rs6000/tramp.S.
	* config/rx/t-rx (LIBGCC, INSTALL_LIBGCC): Remove.
	* config/sh/linux-atomic.asm: Move to
	../libgcc/config/sh/linux-atomic.S.
	* config/sh/t-linux (LIB2FUNCS_EXTRA): Remove.
	* config/sh/t-netbsd: Remove.
	* config/sh/t-sh (TARGET_LIBGCC2_CFLAGS, LIBGCC, INSTALL_LIBGCC):
	Remove.
	* config/sparc/t-elf (LIBGCC, INSTALL_LIBGCC): Remove.
	* config/sparc/t-leon: Likewise.
	* config/sparc/t-leon3: Likewise.
	* config/sparc/t-linux64: Likewise.
	* config/sparc/t-netbsd64: Fix typo.
	Remove comment.
	* config/spu/divmodti4.c, config/spu/divv2df3.c,
	config/spu/float_disf.c, config/spu/float_unsdidf.c,
	config/spu/float_unsdisf.c, config/spu/float_unssidf.c,
	config/spu/mfc_multi_tag_release.c,
	config/spu/mfc_multi_tag_reserve.c, config/spu/mfc_tag_release.c,
	config/spu/mfc_tag_reserve.c, config/spu/mfc_tag_table.c,
	config/spu/multi3.c: Move to ../libgcc/config/spu.
	* config/spu/t-spu-elf (TARGET_LIBGCC2_CFLAGS, LIB2FUNCS_EXCLUDE)
	(LIB2FUNCS_STATIC_EXTRA, LIB2_SIDITI_CONV_FUNCS, LIBGCC)
	(INSTALL_LIBGCC): Remove.
	* config/stormy16/stormy16-lib2.c: Move to
	../libgcc/config/stormy16/lib2.c.
	* config/stormy16/stormy16-lib2-ashlsi3.c: Move to
	../libgcc/config/stormy16/ashlsi3.c.
	* config/stormy16/stormy16-lib2-ashrsi3.c: Move to
	../libgcc/config/stormy16/ashrsi3.c.
	* config/stormy16/stormy16-lib2-clzhi2.c: Move to
	../libgcc/config/stormy16/clzhi2.c.
	* config/stormy16/stormy16-lib2-cmpsi2.c: Move to
	../libgcc/config/stormy16/cmpsi2.c.
	* config/stormy16/stormy16-lib2-ctzhi2.c: Move to
	../libgcc/config/stormy16/ctzhi2.c.
	* config/stormy16/stormy16-lib2-divsi3.c: Move to
	../libgcc/config/stormy16/divsi3.c.
	* config/stormy16/stormy16-lib2-ffshi2.c: Move to
	../libgcc/config/stormy16/ffshi2.c.
	* config/stormy16/stormy16-lib2-lshrsi3.c: Move to
	../libgcc/config/stormy16/lshrsi3.c.
	* config/stormy16/stormy16-lib2-modsi3.c: Move to
	../libgcc/config/stormy16/modsi3.c.
	* config/stormy16/stormy16-lib2-parityhi2.c: Move to
	../libgcc/config/stormy16/parityhi2.c.
	* config/stormy16/stormy16-lib2-popcounthi2.c: Move to
	../libgcc/config/stormy16/popcounthi2.c.
	* config/stormy16/stormy16-lib2-ucmpsi2.c: Move to
	../libgcc/config/stormy16/ucmpsi2.c.
	* config/stormy16/stormy16-lib2-udivmodsi4.c: Move to
	../libgcc/config/stormy16/udivmodsi4.c.
	* config/stormy16/stormy16-lib2-udivsi3.c: Move to
	../libgcc/config/stormy16/udivsi3.c.
	* config/stormy16/stormy16-lib2-umodsi3.c: Move to
	../libgcc/config/stormy16/umodsi3.c.
	* config/stormy16/t-stormy16: Move to ../libgcc/config/t-stormy16.
	* config/v850/t-v850 (INSTALL_LIBGCC): Remove.
	* config/xtensa/lib2funcs.S: Move to ../libgcc/config/xtensa.
	* config/xtensa/t-elf: Remove.
	* config/xtensa/t-xtensa (LIB2FUNCS_EXTRA): Remove.
	* config.gcc (*-*-freebsd*): Remove t-freebsd, t-freebsd-thread
	from tmake_file.
	(*-*-linux*, frv-*-*linux*, *-*-kfreebsd*-gnu, *-*-knetbsd*-gnu,
	*-*-gnu*, *-*-kopensolaris*-gnu): Remove t-linux from tmake_file.
	(*-*-netbsd*): Remove t-libgcc-pic from tmake_file.
	(*-*-openbsd*): Likewise.
	Remove t-openbsd-thread for posix threads.
	(alpha*-*-linux*): Remove alpha/t-alpha, alpha/t-ieee
	from tmake_file.
	(alpha*-*-freebsd*): Likewise.
	(alpha*-*-netbsd*): Likewise.
	(alpha*-*-openbsd*): Likewise.
	(alpha64-dec-*vms*): Likewise.
	(alpha*-dec-*vms*): Likewise.
	(arm*-*-netbsdelf*): Remove arm/t-netbsd from tmake_file.
	(arm*-*-linux*): Remove t-linux from tmake_file.
	Remove arm/t-bpabi from tmake_file for arm*-*-linux-*eabi.
	(arm*-*-uclinux*): Remove arm/t-bpabi from tmake_file for
	arm*-*-uclinux*eabi.
	(arm*-*-eabi*, arm*-*-symbianelf* ): Remove arm/t-bpabi from
	tmake_file for arm*-*-eabi*.
	(fr30-*-elf): Remove tmake_file.
	(hppa*64*-*-linux*): Remove tmake_file.
	(hppa*-*-linux*): Likewise.
	(hppa[12]*-*-hpux10*): Remove pa/t-pa-hpux10, pa/t-pa-hpux from
	tmake_file.
	(hppa*64*-*-hpux11*): Remove pa/t-pa64, pa/t-pa-hpux from tmake_file.
	(hppa[12]*-*-hpux11*): Remove pa/t-pa-hpux11, pa/t-pa-hpux from
	tmake_file.
	(i[34567]86-*-elf*): Remove tmake_file.
	(x86_64-*-elf*): Likewise.
	(i[34567]86-*-nto-qnx*): Likewise.
	(i[34567]86-*-cygwin*): Remove i386/t-cygwin from tmake_file.
	(i[34567]86-*-mingw*, x86_64-*-mingw*): Remove i386/t-gthr-win32
	from tmake_file if using win32 threads.
	(iq2000*-*-elf*): Remove tmake-file.
	(microblaze*-linux*): Likewise.
	(sh-*-elf*, sh[12346l]*-*-elf*, sh-*-linux*)
	(sh[2346lbe]*-*-linux*, sh-*-netbsdelf*, shl*-*-netbsdelf*)
	(sh5-*-netbsd*, sh5l*-*-netbsd*, sh64-*-netbsd*)
	(sh64l*-*-netbsd*): Remove sh/t-netbsd from tmake_file for
	sh5*-*-netbsd*, sh64*-netbsd*, *-*-netbsd.
	(xtensa*-*-elf*): Remove tmake_file.

	gcc/po:
	* EXCLUDES (config/vxlib.c, gbl-ctors.h, libgcc2.c, libgcc2.h)
	(longlong.h): Remove.

	libgcc:
	* configure.ac: Include ../config/picflag.m4.
	(GCC_PICFLAG): Call it.
	Substitute.
	* configure: Regenerate.
	* Makefile.in (gcc_srcdir): Remove.
	(LIBGCC2_DEBUG_CFLAGS, LIBGCC2_CFLAGS, LIBGCC2_INCLUDES)
	(HOST_LIBGCC2_CFLAGS, PICFLAG, LIB2FUNCS_ST, LIB2FUNCS_EXCLUDE)
	(LIB2_DIVMOD_FUNCS, LIB2ADD, LIB2ADD_ST): Set.
	($(lib2funcs-o), $(lib2funcs-s-o), $(lib2-divmod-o))
	($(lib2-divmod-s-o)): Use $(srcdir) to refer to libgcc2.c.
	Use $<.
	Remove comment.
	* libgcc2.c, libgcc2.h, gbl-ctors.h, longlong.h: New files.
	* siditi-object.mk ($o$(objext), $(o)_s$(objext)): Use $(srcdir)
	to refer to libgcc2.c.
	Use $<.
	* config/darwin-64.c: New file.
	* config/darwin-crt3.c: Remove comment.
	* config/divmod.c, config/floatunsidf.c, config/floatunsisf.c,
	config/floatunsitf.c, config/floatunsixf.c, config/udivmod.c,
	config/udivmodsi4.c: New files.
	* config/memcmp.c, config/memcpy.c, config/memmove.c,
	config/memset.c: New files.
	* config/t-crtstuff-pic (CRTSTUFF_T_CFLAGS_S): Use $(PICFLAG).
	* config/t-darwin (HOST_LIBGCC2_CFLAGS): Set.
	* config/t-freebsd-thread, config/t-libgcc-pic: New files.
	* config/t-libunwind (HOST_LIBGCC2_CFLAGS): Set.
	* config/t-openbsd-thread: New file.
	* config/t-sol2 (HOST_LIBGCC2_CFLAGS): Remove.
	* config/t-vxworks, config/vxlib-tls.c, config/vxlib.c: New files.
	* config/alpha/gthr-posix.c, config/alpha/qrnnd.S: New files.
	* config/alpha/t-alpha (LIB2ADD): Use $(srcdir) to refer to
	qrnnd.S.
	Adapt filename.
	* config/alpha/t-osf-pthread (LIB2ADD): Use $(srcdir)/config/alpha
	to refer to gthr-posix.c.
	* config/alpha/t-vms (LIB2ADD): Set.
	* config/alpha/vms-gcc_shell_handler.c: New file.
	* config/arm/bpabi.c, config/arm/fp16.c,
	config/arm/linux-atomic.c, config/arm/linux-atomic-64bit.c,
	config/arm/unaligned-funcs.c: New files.
	* config/arm/t-bpabi (LIB2ADD, LIB2ADD_ST): Set.
	* config/arm/t-elf (HOST_LIBGCC2_CFLAGS): Set.
	* config/arm/t-linux: Likewise.
	* config/arm/t-linux-eabi (LIB2ADD_ST): Add.
	* config/arm/t-netbsd: New file.
	* config/arm/t-strongarm-elf (HOST_LIBGCC2_CFLAGS): Set.
	* config/arm/t-symbian (LIB2ADD_ST): Set.
	* config/avr/t-avr (LIB2FUNCS_EXCLUDE, HOST_LIBGCC2_CFLAGS): Set.
	* config/bfin/t-crtstuff (CRTSTUFF_T_CFLAGS): Use $(PICFLAG).
	* config/bfin/t-elf: New file.
	* config/c6x/eqd.c, config/c6x/eqf.c, config/c6x/ged.c,
	config/c6x/gef.c, config/c6x/gtd.c, config/c6x/gtf.c,
	config/c6x/led.c, config/c6x/lef.c, config/c6x/ltd.c,
	config/c6x/ltf.c: New files.
	* config/c6x/t-elf (LIB2FUNCS_EXCLUDE, LIB2ADD)
	(HOST_LIBGCC2_CFLAGS): Set.
	* config/c6x/t-uclinux (HOST_LIBGCC2_CFLAGS): Set.
	(CRTSTUFF_T_CFLAGS): Use $(PICFLAG).
	* config/cris/arit.c, config/cris/mulsi3.S, config/cris/t-cris:
	New files.
	* config/cris/t-elfmulti (LIB2ADD_ST): Set.
	* config/cris/t-linux (HOST_LIBGCC2_CFLAGS): Remove.
	* config/frv/cmovd.c, config/frv/cmovh.c, config/frv/cmovw.c,
	config/frv/modi.c, config/frv/uitod.c, config/frv/uitof.c,
	config/frv/ulltod.c, config/frv/ulltof.c, config/frv/umodi.c: New
	files.
	* config/frv/t-frv (LIB2ADD): Set.
	* config/frv/t-linux (CRTSTUFF_T_CFLAGS): Use $(PICFLAG).
	* config/h8300/clzhi2.c, config/h8300/ctzhi2.c,
	config/h8300/fixunssfsi.c, config/h8300/parityhi2.c,
	config/h8300/popcounthi2.c: New files.
	* config/h8300/t-h8300 (LIB2ADD, HOST_LIBGCC2_CFLAGS): Set.
	* config/i386/gthr-win32.c: New file.
	* config/i386/t-cygming (LIBGCC2_INCLUDES): Set.
	* config/i386/t-cygwin: Likewise.
	* config/i386/t-darwin, config/i386/t-darwin64,
	config/i386/t-gthr-win32, config/i386/t-interix: New files.
	* config/i386/t-nto (HOST_LIBGCC2_CFLAGS): Set.
	(CRTSTUFF_T_CFLAGS): Use $(PICFLAG).
	* config/i386/t-sol2 (CRTSTUFF_T_CFLAGS): Use $(PICFLAG).
	* config/ia64/quadlib.c: New file.
	* config/ia64/t-hpux (LIB2ADD): Set.
	* config/ia64/t-ia64: Add comment.
	* config/iq2000/lib2funcs.c, config/iq2000/t-iq2000: New files.
	* config/lm32/t-uclinux (CRTSTUFF_T_CFLAGS): Use $(PICFLAG).
	(HOST_LIBGCC2_CFLAGS): Append, remove -fPIC.
	* config/m32c/lib2funcs.c, config/m32c/trapv.c: New files.
	* config/m32c/t-m32c (LIB2ADD): Set.
	* config/m32r/t-linux (HOST_LIBGCC2_CFLAGS): Set.
	* config/m32r/t-m32r: Likewise.
	* config/m68k/fpgnulib.c: New file.
	* config/m68k/t-floatlib (LIB2ADD): Set.
	(xfgnulib.c): New target.
	* config/mcore/t-mcore (HOST_LIBGCC2_CFLAGS): Set.
	* config/mep/lib2funcs.c, config/mep/tramp.c: New files.
	* config/mep/t-mep (LIB2ADD): Set.
	* config/microblaze/divsi3.asm: Rename to divsi3.S.
	* config/microblaze/moddi3.asm: Rename to moddi3.S.
	* config/microblaze/modsi3.asm: Rename to modsi3.S.
	* config/microblaze/muldi3_hard.asm: Rename to hard.S.
	* config/microblaze/mulsi3.asm: Rename to mulsi3.S.
	* config/microblaze/stack_overflow_exit.asm: Rename to exit.S.
	* config/microblaze/udivsi3.asm: Rename to udivsi3.S.
	* config/microblaze/umodsi3.asm: Rename to umodsi3.S.
	* config/microblaze/t-microblaze (LIB2ADD): Reflect this.
	* config/mips/t-elf, config/mips/t-vr, config/mips/vr4120-div.S:
	New files.
	* config/mips/t-mips (LIB2_SIDITI_CONV_FUNCS): Set.
	* config/mmix/t-mmix (HOST_LIBGCC2_CFLAGS): Set.
	* config/pa/fptr.c, config/pa/lib2funcs.S,
	config/pa/linux-atomic.c, config/pa/quadlib.c: New files.
	* config/pa/t-linux (HOST_LIBGCC2_CFLAGS): Set.
	(LIB2ADD, LIB2ADD_ST): Set.
	* config/pa/t-hpux, config/pa/t-hpux10, config/pa/t-pa64: New files.
	* config/pa/t-linux (HOST_LIBGCC2_CFLAGS, LIB2ADD, LIB2ADD_ST):
	Set.
	* config/pa/t-linux64 (LIB2ADD_ST, HOST_LIBGCC2_CFLAGS): Set.
	* config/pdp11/t-pdp11: New file.
	* config/picochip/libgccExtras/adddi3.S,
	config/picochip/libgccExtras/ashlsi3.S,
	config/picochip/libgccExtras/ashrsi3.S,
	config/picochip/libgccExtras/clzsi2.S,
	config/picochip/libgccExtras/cmpsi2.S,
	config/picochip/libgccExtras/divmod15.S,
	config/picochip/libgccExtras/divmodhi4.S,
	config/picochip/libgccExtras/divmodsi4.S,
	config/picochip/libgccExtras/lshrsi3.S,
	config/picochip/libgccExtras/parityhi2.S,
	config/picochip/libgccExtras/popcounthi2.S,
	config/picochip/libgccExtras/subdi3.S,
	config/picochip/libgccExtras/ucmpsi2.S,
	config/picochip/libgccExtras/udivmodhi4.S,
	config/picochip/libgccExtras/udivmodsi4.S: New files.
	* config/picochip/t-picochip (LIB2ADD, HOST_LIBGCC2_CFLAGS)
	(LIBGCC2_DEBUG_CFLAGS, RANLIB_FOR_TARGET): Set.
	* config/rs6000/crtresfpr.S, config/rs6000/crtresgpr.S,
	config/rs6000/crtresxfpr.S, config/rs6000/crtresxgpr.S,
	config/rs6000/crtsavfpr.S, config/rs6000/crtsavgpr.S)
	config/rs6000/darwin-asm.h, config/rs6000/darwin-fpsave.S,
	config/rs6000/darwin-gpsave.S, 	config/rs6000/darwin-tramp.S,
	config/rs6000/darwin-vecsave.S, config/rs6000/darwin-world.S: New
	files.
	* config/rs6000/t-darwin (LIB2ADD, LIB2ADD_ST)
	(HOST_LIBGCC2_CFLAGS): Set.
	* config/rs6000/t-darwin64: New file.
	* config/rs6000/t-linux64 (HOST_LIBGCC2_CFLAGS): Set.
	* config/rs6000/t-lynx, config/rs6000/t-netbsd: New files.
	* config/rs6000/t-ppccomm (LIB2ADD): Add
	$(srcdir)/config/rs6000/tramp.S.
	(LIB2ADD_ST): Use $(srcdir)/config/rs6000 to refer to sources.
	Add  $(srcdir)/config/rs6000/eabi.S.
	(crtsavfpr.S, crtresfpr.S, crtsavgpr.S, crtresgpr.S, crtresxfpr.S)
	(crtresxgpr.S, e500crtres32gpr.S, e500crtres64gpr.S)
	(e500crtres64gprctr.S, e500crtrest32gpr.S, e500crtrest64gpr.S)
	(e500crtresx32gpr.S, e500crtresx64gpr.S, e500crtsav32gpr.S)
	(e500crtsav64gpr.S, e500crtsav64gprctr.S, e500crtsavg32gpr.S)
	(e500crtsavg64gpr.S, e500crtsavg64gprctr.S): Remove.
	* config/rs6000/tramp.S: New file.
	* config/s390/t-tpf: Remove.
	* config/sh/linux-atomic.S: New file.
	* config/sh/t-linux (LIB2ADD): Set.
	(HOST_LIBGCC2_CFLAGS): Append, remove -fpic.
	* config/sh/t-netbsd (LIB2ADD, HOST_LIBGCC2_CFLAGS): Set.
	* config/sh/t-sh (unwind-dw2-Os-4-200.o): Use $(srcdir) to refer
	to unwind-dw2.c.
	(HOST_LIBGCC2_CFLAGS): Set.
	* config/sparc/t-sol2 (CRTSTUFF_T_CFLAGS): Use $(PICFLAG).
	* config/spu/divmodti4.c, config/spu/divv2df3.c,
	config/spu/float_disf.c, config/spu/float_unsdidf.c,
	config/spu/float_unsdisf.c, config/spu/float_unssidf.c,
	config/spu/mfc_multi_tag_release.c,
	config/spu/mfc_multi_tag_reserve.c, config/spu/mfc_tag_release.c,
	config/spu/mfc_tag_reserve.c, config/spu/mfc_tag_table.c,
	config/spu/multi3.c: New files.
	* config/spu/t-elf (LIB2ADD, LIB2ADD_ST, LIB2_SIDITI_CONV_FUNCS)
	(HOST_LIBGCC2_CFLAGS): Set.
	* config/stormy16/ashlsi3.c, config/stormy16/ashrsi3.c,
	config/stormy16/clzhi2.c, config/stormy16/cmpsi2.c,
	config/stormy16/ctzhi2.c, config/stormy16/divsi3.c,
	config/stormy16/ffshi2.c, config/stormy16/lib2.c,
	config/stormy16/lshrsi3.c, config/stormy16/modsi3.c,
	config/stormy16/parityhi2.c, config/stormy16/popcounthi2.c,
	config/stormy16/t-stormy16, config/stormy16/ucmpsi2.c,
	config/stormy16/udivmodsi4.c, config/stormy16/udivsi3.c,
	config/stormy16/umodsi3.c: New files.
	* config/xtensa/lib2funcs.S: New file.
	* config/xtensa/t-elf (HOST_LIBGCC2_CFLAGS): Set.
	* config/xtensa/t-xtensa (LIB2ADD): Set.
	* config.host (*-*-darwin*): Add t-libgcc-pic to tmake_file.
	(*-*-freebsd*): Add t-freebsd, t-libgcc-pic to tmake_file.
	Add t-freebsd-thread to tmake_file for posix threads.
	(*-*-linux*, frv-*-*linux*, *-*-kfreebsd*-gnu, *-*-knetbsd*-gnu)
	(*-*-gnu*, *-*-kopensolaris*-gnu): Add t-libgcc-pic to tmake_file.
	(*-*-lynxos*): Likewise.
	(*-*-netbsd*): Likewise.
	(*-*-openbsd*): Likewise.
	Add t-openbsd-thread to tmake_file for posix threads.
	(*-*-solaris2*): Add t-libgcc-pic to tmake_file.
	(*-*-vxworks*): Set tmake_file.
	(alpha*-*-linux*): Add alpha/t-alpha, alpha/t-ieee to tmake_file.
	(alpha*-*-freebsd*): Likewise.
	(alpha*-*-netbsd*): Likewise.
	(alpha*-*-openbsd*): Likewise.
	(alpha*-dec-osf5.1*): Remove qrnnd.o, gthr-posix.o from extra_parts.
	(alpha64-dec-*vms*): Add alpha/t-alpha, alpha/t-ieee to tmake_file.
	(alpha*-dec-*vms*): Likewise.
	(arm*-*-netbsdelf*): Add arm/t-netbsd to tmake_file.
	(bfin*-elf*): Add bfin/t-elf to tmake_file.
	(bfin*-uclinux*): Likewise.
	(bfin*-linux-uclibc*): Likewise.
	(crisv32-*-elf): Add cris/t-cris to tmake_file.
	(crisv32-*-none): Likewise.
	(cris-*-elf): Likewise.
	(cris-*-none): Likewise.
	(cris-*-linux*, crisv32-*-linux*): Likewise.
	(hppa[12]*-*-hpux10*): Add pa/t-hpux pa/t-hpux10, t-libgcc-pic to
	tmake_file.
	(hppa*64*-*-hpux11*): Add pa/t-hpux, pa/t-pa64, t-libgcc-pic to
	tmake_file.
	(hppa[12]*-*-hpux11*): Add pa/t-hpux, t-libgcc-pic to tmake_file.
	(i[34567]86-*-elf*): Add t-libgcc-pic to tmake_file.
	(x86_64-*-elf*): Likewise.
	(i[34567]86-*-nto-qnx*): Likewise.
	(i[34567]86-*-mingw*): Add i386/t-gthr-win32 to tmake_file for
	win32 threads.
	(x86_64-*-mingw*): Likewise.
	(i[34567]86-*-interix3*): Add i386/t-interix to tmake_file.
	(lm32-*-uclinux*): Add t-libgcc-pic to tmake_file.
	(mipsisa32-*-elf*, mipsisa32el-*-elf*, mipsisa32r2-*-elf*)
	(mipsisa32r2el-*-elf*, mipsisa64-*-elf*, mipsisa64el-*-elf*)
	(mipsisa64r2-*-elf*, mipsisa64r2el-*-elf*): Add mips/t-elf to
	tmake_file.
	(mipsisa64sr71k-*-elf*): Likewise.
	(mipsisa64sb1-*-elf*, mipsisa64sb1el-*-elf*): Likewise.
	(mips-*-elf*, mipsel-*-elf*): Likewise.
	(mips64-*-elf*, mips64el-*-elf*): Likewise.
	(mips64orion-*-elf*, mips64orionel-*-elf*): Likewise.
	(mips*-*-rtems*): Likewise.
	(mips64vr-*-elf*, mips64vrel-*-elf*): Add mips/t-elf, mips/t-vr
	to tmake_file.
	(pdp11-*-*): Add pdp11/t-pdp11 to tmake_file.
	(powerpc64-*-darwin*): Add rs6000/t-darwin64 to tmake_file.
	(s390x-ibm-tpf*): Add t-libgcc-pic to tmake_file.
	(spu-*-elf*): Likewise.
	(tic6x-*-uclinux): Add t-libgcc-pic to tmake_file.

	libquadmath:
	* printf/gmp-impl.h: Adapt path to longlong.h.

From-SVN: r180774

	libgcc/
	* Makefile.in (lib2funcs): Add _clrsbsi2 and _clrsbdi2.
	* libgcc-std.ver.in (GCC_4.7.0): New section.

	gcc/
	* doc/extend.texi (__builtin_clrsb, __builtin_clrsbl,
	__builtin_clrsbll): Document.
	* doc/rtl.texi (clrsb): New entry.
	* optabs.c (widen_leading): Renamed from widen_clz.  New argument
	UNOPTAB.  All callers changed.  Use UNOPTAB instead of clz_optab.
	(expand_unop): Handle clrsb_optab.
	(init_optabs): Initialize it.
	* optabs.h (enum optab_index): New entry OTI_clrsb.
	(clrsb_optab): Define.
	* genopinit.c (optabs): Add an entry for it.
	* builtins.c (expand_builtin): Handle clrsb builtin functions.
	* builtins.def (BUILT_IN_CLRSB, BUILT_IN_CLRSBIMAX, BUILT_IN_CLRSBL,
	BUILT_IN_CLRSBLL): New.
	* rtl.def (CLRSB): New code.
	* dwarf2out.c (mem_loc_descriptor): Handle it.
	* simplify-rtx.c (simplify_const_unary_operation): Likewise.
	Use op_mode rather than mode when optimizing ffs, clz, ctz, parity
	and popcount.
	* libgcc2.c (__clrsbSI2, __clrsbDI2): New functions.
	* libgcc2.h (__clrsbSI2, __clrsbDI2): Define and declare.
	(__ctzDI2): Move declaration.
	* config/bfin/bfin.md (clrsbsi2): New expander.
	(signbitssi2): Use the CLRSB rtx.
	(clrsbhi2): Renamed from signbitshi2.  Use the CLRSB rtx.
	* config/bfin/bfin.c (bdesc_1arg): Changed accordingly.

	gcc/testsuite/
	* gcc.c-torture/excute/builtin-bitops-1.c (MAKE_FUNS): Make
	my_clrsb test functions.
	(main): Test clrsb.
	* gcc.dg/builtin-protos-1.c (test_s, test_u, test_sl, test_ul,
	test_sll, test_ull): Add clrsb tests.
	* gcc.dg/torture/builtin-attr-1.c: Add tests for clrsb, clrsbl,
	clrsbll.

From-SVN: r175261

	PR bootstrap/49160
	* libgcc2.h (__powisf2, __powidf2, __powitf2, __powixf2,
	__mulsc3, __muldc3, __mulxc3, __multc3, __divsc3, __divdc3,
	__divxc3, __divtc3): Wrap definitions in #ifndef.

From-SVN: r174216

	gcc/
	* libgcc2.h (__NW, __NDW): Define using a __gnu_ prefix if
	LIBGCC2_GNU_PREFIX is defined.
	(__N): New macro.
	(__powisf2, __powidf2, __powitf2, __powixf2, __bswapsi2, __bswapdi2,
	__mulsc3, __muldc3, __mulxc3, __multc3, __divsc3, __divdc3, __divxc3,
	__divtc3, __udiv_w_sdiv, __clear_cache, __enable_execute_stack,
	__clz_tab): Define using __N.
	(__absvsi2, __negvsi2, __addvsi3, __subvsi3, __mulvsi3): Likewise if
	COMPAT_SIMODE_TRAPPING_ARITHMETIC.
	* target.def (libfunc_gnu_prefix): New hook.
	* doc/tm.texi.in (LIBGCC2_GNU_PREFIX): Document.
	(TARGET_LIBFUNC_GNU_PREFIX): Add hook.
	* doc/tm.texi: Regenerate.
	* system.h (LIBGCC2_GNU_PREFIX): Poison.
	* optabs.c (gen_libfunc): Take the libfunc_gnu_prefix hook into
	account.
	(gen_interclass_conv_libfunc, gen_intraclass_conv_libfunc): Likewise.
	(init_optabs): Likewise for the bswap libfuncs.
	* tree.c (build_common_builtin_nodes): Likewise for complex multiply
	and divide.
	* config/t-slibgcc-elf-ver (SHLIB_MAPFILES): Use $$(libgcc_objdir).
	* config/t-slibgcc-sld (SHLIB_MAPFILES): Likewise.
	* libgcc-std.ver: Remove.
	* Makefile.in (srcdirify): Handle $$(libgcc_objdir).
	* config/frv/t-linux (SHLIB_MAPFILES): Use $$(libgcc_objdir) for
	libgcc-std.ver.
	* config/i386/t-linux (SHLIB_MAPFILES): Likewise.
	* config/mips/t-slibgcc-irix (SHLIB_MAPFILES): Likewise.
	* config/rs6000/t-aix43 (SHLIB_MAPFILES): Likewise.
	* config/rs6000/t-aix52 (SHLIB_MAPFILES): Likewise.
	* config/sparc/t-linux (SHLIB_MAPFILES): Likewise.
	* config/i386/t-linux (SHLIB_MAPFILES): Likewise.
	* config/i386/t-linux (SHLIB_MAPFILES): Likewise.
	* config/fixed-bit.h (FIXED_OP): Define differently depending on
	LIBGCC2_GNU_PREFIX. All uses changed not to pass leading underscores.
	(FIXED_CONVERT_OP, FIXED_CONVERT_OP2): Likewise.

	libgcc/
	* libgcc-std.ver.in: New file.
	* Makefile.in (LIBGCC_VER_GNU_PREFIX, LIBGCC_VER_SYMBOLS_PREFIX): New
	variables.
	(libgcc-std.ver): New rule.
	* config/t-gnu-prefix: New file.

From-SVN: r174187

From-SVN: r168438

gcc/
	* cppbuiltin.c (define_builtin_macros_for_type_sizes): Define
	__BYTE_ORDER__, __ORDER_LITTLE_ENDIAN__, __ORDER_BIG_ENDIAN__, and
	__ORDER_PDP_ENDIAN__.
	* libgcc2.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
	(struct DWstruct): Define based on __BYTE_ORDER__.
	* config/fixed-bit.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
	(struct INTstruct): Define based on __BYTE_ORDER__.
	* config/dfp-bit.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
	(LIBGCC2_FLOAT_WORDS_BIG_ENDIAN): Test __BYTE_ORDER__.
	* system.h (LIBGCC2_WORDS_BIG_ENDIAN): Poison identifier.
	* config/arc/arc.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
	* config/arm/arm.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
	* config/ia64/ia64.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
	* config/iq2000/iq2000.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
	* config/lm32/lm32.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
	* config/m32r/m32r.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
	* config/mcore/mcore.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
	* config/mep/mep.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
	* config/mips/mips.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
	* config/rs6000/sysv4.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
	* config/rx/rx.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
	* config/score/score.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
	* config/sh/sh.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
	* config/sparc/sparc.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
	* config/xtensa/xtensa.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
	* doc/tm.texi.in (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
	* doc/tm.texi: Regenerate.
	* doc/cpp.texi (__BYTE_ORDER__, __ORDER_LITTLE_ENDIAN__): Document.
	(__ORDER_BIG_ENDIAN__, __ORDER_PDP_ENDIAN__): Likewise.

libdecnumber/
	* dconfig.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
	(LIBGCC2_FLOAT_WORDS_BIG_ENDIAN): Test __BYTE_ORDER__.

libgcc/
	* config/libbid/bid_gcc_intrinsics.h (LIBGCC2_WORDS_BIG_ENDIAN):
	Delete.
	(LIBGCC2_FLOAT_WORDS_BIG_ENDIAN): Test __BYTE_ORDER__.

From-SVN: r165881

	* libgcc2.h: Use __SIZEOF_DOUBLE__ instead of
	LIBGCC2_DOUBLE_TYPE_SIZE.
	(LIBGCC2_DOUBLE_TYPE_SIZE): Delete.
	* config/fixed-bit.h: Likewise.
	* config/rx/rx.h (LIBGCC2_DOUBLE_TYPE_SIZE): Delete.
	* config/sh/sh.h (LIBGCC2_DOUBLE_TYPE_SIZE): Delete.
	* system.h (LIBGCC2_DOUBLE_TYPE_SIZE): Poison.
	* doc/tm.texi.in (LIBGCC2_HAS_DF_MODE): Use DOUBLE_TYPE_SIZE.
	(DF_SIZE): Likewise.
	* doc/tm.texi: Regenerate.

From-SVN: r165396

	* libgcc2.h: Use __SIZEOF_LONG_LONG__ instead of LONG_LONG_TYPE_SIZE.
	* libgcc2.c: Likewise.

From-SVN: r165238

From-SVN: r145841

	* libgcc2.c (__fixunstfDI, __fixunsxfDI, __fixunsdfDI,
	__fixunssfDI): Make return type unsigned.
	* libgcc2.h (__fixunstfDI, __fixunsxfDI, __fixunsdfDI,
	__fixunssfDI): Make return type unsigned.

From-SVN: r129899

2007-07-06  Andreas Krebbel  <krebbel1@de.ibm.com>

	* libgcc2.h (word_type): Type definition removed.
	(cmp_return_type, shift_count_type): Type definitions added.
	(__lshrdi3, __ashldi3, __ashrdi3): word_type of second parameter
	replaced with shift_count_type.
	(__cmpdi2, __ucmpdi2): word_type of return type replaced with
	cmp_return_type.
	* libgcc2.c (__udivmoddi4, __moddi3): Type of local variable c
	changed from word_type to Wtype.
	(__lshrdi3, __ashldi3, __ashrdi3): word_type of second parameter
	replaced with shift_count_type.
	(__cmpdi2, __ucmpdi2): word_type of return type replaced with
	cmp_return_type.
	* c-common.c (handle_mode_attribute): Handling for libgcc_cmp_return and
	libgcc_shift_count attribute added.
	* target-def.h (TARGET_LIBGCC_CMP_RETURN_MODE,
	TARGET_LIBGCC_SHIFT_COUNT_MODE): New target hooks defined.
	(TARGET_INITIALIZER): New target hooks added.
	* targhooks.c (default_libgcc_cmp_return_mode,
	default_libgcc_shift_count_mode): Default implementations for the new
	target hooks added.
	* targhooks.h (default_libgcc_cmp_return_mode,
	default_libgcc_shift_count_mode): Function prototypes added.
	* target.h (struct gcc_target): Fields for the new target hooks added.
	* optabs.c (expand_binop): Use shift_count_mode when expanding shift
	as library call.
	(prepare_cmp_insn): Use cmp_return_mode when expanding comparison as
	library call.

	* doc/tm.texi (TARGET_LIBGCC_CMP_RETURN_MODE,
	TARGET_LIBGCC_SHIFT_COUNT_MODE): Documentation added.

	* config/s390/s390.c (s390_libgcc_cmp_return_mode,
	s390_libgcc_shift_count_mode): Functions added.
	(TARGET_LIBGCC_CMP_RETURN_MODE,	TARGET_LIBGCC_SHIFT_COUNT_MODE): Target
	hooks defined.

From-SVN: r126410

2007-07-03  Eric Christopher  <echristo@gmail.com>

        * libgcc2.h: Conditionally declare __bswapsi2 and
        __bswapdi2.

From-SVN: r126263

        * libgcc2.h (AVOID_FP_TYPE_CONVERSION): Rename from 
        IS_IBM_EXTENDED.  Also define in terms of WIDEST_HARDWARE_FP_SIZE.
        * libgcc2.c (__floatdisf): Avoid double-word arithmetic when
        looking for non-zero bits shifted out.  Avoid a recursive call
        when constructing the scalar.
        (__floatundisf): Likewise.

From-SVN: r124106