* handle function results correctly in life dfa
* handle for loops with at least one iteration better in life dfa
o resolves#8151
git-svn-id: trunk@11624 -
* small cleanups of unused variables in firstpass
* node_resources_fpu() created to get an approximation of the
required fpu registers
* for the moment use node_complexity in the CG until the
node_resource_int() is created
git-svn-id: trunk@8655 -
+ darwin/ppc64 support
+ val/str/read(ln)/write(ln) support for enums
+ simple cse at the node tree level
+ if-node simplify support
+ simple ssa support for memory locations
+ support for optional overflow/rangecheck boolean parameters for
operators
* a lot of unification of the ppc32/ppc64 code generators
........
r6380 | jonas | 2007-02-08 21:25:36 +0100 (Thu, 08 Feb 2007) | 4 lines
Changed paths:
M /branches/fpc_2_3/compiler/ncgld.pas
M /branches/fpc_2_3/compiler/tgobj.pas
A /branches/fpc_2_3/tests/webtbs/tw8283.pp
+ support for replacing the memory location of a temp (including
local variables) with that of another temp to avoid unnecessary
copies (mantis #8283)
........
r6381 | jonas | 2007-02-08 22:53:36 +0100 (Thu, 08 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/nflw.pas
A /branches/fpc_2_3/tests/webtbs/tw8282.pp
+ simplify support for ifn (based on patch by Florian)
........
r6386 | peter | 2007-02-09 13:48:53 +0100 (Fri, 09 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/htypechk.pas
M /branches/fpc_2_3/compiler/ncal.pas
M /branches/fpc_2_3/compiler/symconst.pas
* overflow,rangecheck optional parameters for operators, patch from 8281
........
r6391 | jonas | 2007-02-09 23:52:13 +0100 (Fri, 09 Feb 2007) | 4 lines
Changed paths:
M /branches/fpc_2_3/compiler/powerpc/agppcgas.pas
M /branches/fpc_2_3/compiler/powerpc64/cpunode.pas
D /branches/fpc_2_3/compiler/powerpc64/nppcinl.pas
M /branches/fpc_2_3/compiler/ppcgen/ngppcinl.pas
* merged fsqrt(s) support to common powerpc unit, activate for ppc32
if -Op970 is used (still default for ppc64, since default cpu there
is already ppc970)
........
r6394 | jonas | 2007-02-10 18:58:47 +0100 (Sat, 10 Feb 2007) | 4 lines
Changed paths:
M /branches/fpc_2_3/compiler/powerpc/cgcpu.pas
M /branches/fpc_2_3/compiler/powerpc64/cgcpu.pas
M /branches/fpc_2_3/compiler/ppcgen/cgppc.pas
* adapted a_jmp_name for darwin/ppc64
* merged g_intf_wrapper for ppc32 and ppc64, and added darwin/ppc64
support to it
........
r6396 | jonas | 2007-02-10 20:16:06 +0100 (Sat, 10 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/cgobj.pas
+ darwin/ppc64 support for g_indirect_sym_load
........
r6397 | jonas | 2007-02-10 20:22:49 +0100 (Sat, 10 Feb 2007) | 4 lines
Changed paths:
M /branches/fpc_2_3/compiler/powerpc/cgcpu.pas
M /branches/fpc_2_3/compiler/powerpc64/cgcpu.pas
M /branches/fpc_2_3/compiler/ppcgen/cgppc.pas
+ darwin/ppc64 support to ppc64's fixref
* moved ppc32 a_load_store to cgppc and use it for darwin/ppc64 as
well (its relocatable symbols are only 32 bits large)
........
r6399 | jonas | 2007-02-10 22:02:37 +0100 (Sat, 10 Feb 2007) | 4 lines
Changed paths:
M /branches/fpc_2_3/compiler/systems.pas
+ system_x86_64_darwin identifier
+ set default source system for system_x86_64_darwin and
system_powerpc64_darwin
........
r6404 | jonas | 2007-02-10 23:01:23 +0100 (Sat, 10 Feb 2007) | 5 lines
Changed paths:
M /branches/fpc_2_3/compiler/aasmdata.pas
M /branches/fpc_2_3/compiler/aggas.pas
M /branches/fpc_2_3/compiler/cgobj.pas
M /branches/fpc_2_3/compiler/cgutils.pas
M /branches/fpc_2_3/compiler/cresstr.pas
M /branches/fpc_2_3/compiler/dbgdwarf.pas
M /branches/fpc_2_3/compiler/dbgstabs.pas
M /branches/fpc_2_3/compiler/ncgutil.pas
M /branches/fpc_2_3/compiler/ogelf.pas
M /branches/fpc_2_3/compiler/pdecvar.pas
M /branches/fpc_2_3/compiler/pmodules.pas
M /branches/fpc_2_3/compiler/symdef.pas
M /branches/fpc_2_3/compiler/systems.pas
+ system_x86_64_darwin identifier
+ systems_darwin set which collects all darwin variants
+ added support for darwin/ppc64 and darwin/x86_64 where needed in
the generic code
........
r6406 | jonas | 2007-02-10 23:24:32 +0100 (Sat, 10 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/cgobj.pas
* ifdef cpu64 -> ifdef cpu64bit
........
r6409 | jonas | 2007-02-11 00:34:04 +0100 (Sun, 11 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/pdecvar.pas
* fixed ppc64 compilation
........
r6413 | jonas | 2007-02-11 12:41:27 +0100 (Sun, 11 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/rtl/bsd/system.pp
M /branches/fpc_2_3/rtl/darwin/powerpc/sig_cpu.inc
M /branches/fpc_2_3/rtl/darwin/signal.inc
+ darwin/ppc64 support for signal routines
........
r6415 | jonas | 2007-02-11 13:54:53 +0100 (Sun, 11 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/systems/i_linux.pas
* set abi of linux/ppc64 to abi_powerpc_sysv
........
r6416 | jonas | 2007-02-11 13:55:51 +0100 (Sun, 11 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/powerpc64/cputarg.pas
M /branches/fpc_2_3/compiler/systems/i_bsd.pas
M /branches/fpc_2_3/compiler/systems/t_bsd.pas
+ darwin/ppc64 source and target information
........
r6418 | jonas | 2007-02-11 14:19:55 +0100 (Sun, 11 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/rtl/powerpc64/math.inc
* darwin/ppc64 compilation fixes
........
r6419 | jonas | 2007-02-11 14:22:22 +0100 (Sun, 11 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/powerpc/cgcpu.pas
M /branches/fpc_2_3/compiler/powerpc64/cgcpu.pas
M /branches/fpc_2_3/compiler/ppcgen/cgppc.pas
* darwin/ppc64 needs the 32 bit version of a_loadaddr_ref_reg
........
r6420 | jonas | 2007-02-11 14:22:55 +0100 (Sun, 11 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/utils/fpcm/fpcmmain.pp
+ darwin/ppc64 support
........
r6426 | jonas | 2007-02-11 16:13:19 +0100 (Sun, 11 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/powerpc64/rappcgas.pas
* fixed refaddr parsing for darwin/ppc64
........
r6427 | jonas | 2007-02-11 16:14:21 +0100 (Sun, 11 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/powerpc/agppcgas.pas
M /branches/fpc_2_3/compiler/powerpc64/agppcgas.pas
A /branches/fpc_2_3/compiler/ppcgen/agppcutl.pas
* moved ppc32/ppc64 assembler writer helpers to a common unit
........
r6430 | jonas | 2007-02-11 17:53:23 +0100 (Sun, 11 Feb 2007) | 4 lines
Changed paths:
D /branches/fpc_2_3/rtl/darwin/powerpc/sig_cpu.inc
D /branches/fpc_2_3/rtl/darwin/powerpc/sighnd.inc
A /branches/fpc_2_3/rtl/darwin/powerpc64
A /branches/fpc_2_3/rtl/darwin/powerpc64/sig_cpu.inc
A /branches/fpc_2_3/rtl/darwin/powerpc64/sighnd.inc
A /branches/fpc_2_3/rtl/darwin/ppcgen
A /branches/fpc_2_3/rtl/darwin/ppcgen/ppchnd.inc (from /branches/fpc_2_3/rtl/darwin/powerpc/sighnd.inc:6422)
A /branches/fpc_2_3/rtl/darwin/ppcgen/sig_ppc.inc (from /branches/fpc_2_3/rtl/darwin/powerpc/sig_cpu.inc:6422)
M /branches/fpc_2_3/rtl/darwin/signal.inc
* fixed ppc/ppc64 signal include handling (both real files are in
ppcgen, dummies in powerpc and powerpc64 which include those files)
(1st step because pre-commit filter can't handle replaced files)
........
r6431 | jonas | 2007-02-11 17:53:47 +0100 (Sun, 11 Feb 2007) | 2 lines
Changed paths:
A /branches/fpc_2_3/rtl/darwin/powerpc/sig_cpu.inc
A /branches/fpc_2_3/rtl/darwin/powerpc/sighnd.inc
* second step of signal include patch
........
r6432 | jonas | 2007-02-11 19:00:12 +0100 (Sun, 11 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/systems/t_bsd.pas
* changed darwin checks to use systems_darwin constant
........
r6433 | jonas | 2007-02-11 19:05:38 +0100 (Sun, 11 Feb 2007) | 3 lines
Changed paths:
M /branches/fpc_2_3/compiler/powerpc64/cgcpu.pas
* handle non-multiple-of-4 offsets with 64 bit loads/stores for
darwin/ppc64
........
r6434 | jonas | 2007-02-11 19:05:56 +0100 (Sun, 11 Feb 2007) | 2 lines
Changed paths:
D /branches/fpc_2_3/compiler/powerpc/agppcgas.pas
D /branches/fpc_2_3/compiler/powerpc64/agppcgas.pas
A /branches/fpc_2_3/compiler/ppcgen/agppcgas.pas (from /branches/fpc_2_3/compiler/ppcgen/agppcutl.pas:6427)
D /branches/fpc_2_3/compiler/ppcgen/agppcutl.pas
* completely merged ppc assembler writers
........
r6435 | jonas | 2007-02-11 19:06:40 +0100 (Sun, 11 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/rtl/darwin/console.pp
M /branches/fpc_2_3/rtl/darwin/termiosproc.inc
* fixed 64 bit compilation
........
r6436 | jonas | 2007-02-11 19:09:28 +0100 (Sun, 11 Feb 2007) | 3 lines
Changed paths:
M /branches/fpc_2_3/packages/extra/Makefile.fpc
* universal interfaces aren't 64 bit ready yet -> only compile for
darwin/ppc and darwin/i386
........
r6438 | jonas | 2007-02-11 19:22:34 +0100 (Sun, 11 Feb 2007) | 2 lines
Changed paths:
A /branches/fpc_2_3/tests/test/cg/obj/darwin/powerpc64
A /branches/fpc_2_3/tests/test/cg/obj/darwin/powerpc64/ctest.o
A /branches/fpc_2_3/tests/test/cg/obj/darwin/powerpc64/tcext3.o
A /branches/fpc_2_3/tests/test/cg/obj/darwin/powerpc64/tcext4.o
A /branches/fpc_2_3/tests/test/cg/obj/darwin/powerpc64/tcext5.o
+ compiled for darwin/ppc64
........
r6439 | jonas | 2007-02-11 20:24:42 +0100 (Sun, 11 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/ppcgen/cgppc.pas
* patch from Thomas to fix linux/ppc64
........
r6440 | jonas | 2007-02-11 20:25:15 +0100 (Sun, 11 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/systems.pas
* fixed setting source OS for darwin/ppc64
........
r6444 | florian | 2007-02-11 22:24:20 +0100 (Sun, 11 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/globtype.pas
M /branches/fpc_2_3/compiler/nopt.pas
M /branches/fpc_2_3/compiler/nutils.pas
M /branches/fpc_2_3/compiler/optcse.pas
M /branches/fpc_2_3/compiler/psub.pas
+ first node cse implementation
........
r6445 | jonas | 2007-02-11 22:30:07 +0100 (Sun, 11 Feb 2007) | 6 lines
Changed paths:
M /branches/fpc_2_3/compiler/cresstr.pas
* hack to work around strange darwin/ppc64 linker bug: it seems to
have problems if you put a global symbol at the end of a section
without any data following (at least in case of the resource strings
section) -> add dummy byte at the end for darwin/ppc64 (otherwise
it messes up the address of the first symbol stub entry)
........
r6449 | jonas | 2007-02-11 23:23:44 +0100 (Sun, 11 Feb 2007) | 4 lines
Changed paths:
M /branches/fpc_2_3/compiler/systems/i_bsd.pas
* cpupowerpc is defined for both ppc32 and ppc64 ->
changed to cpupowerpc32 to avoid defining source
wrongly on ppc64
........
r6450 | jonas | 2007-02-11 23:26:34 +0100 (Sun, 11 Feb 2007) | 3 lines
Changed paths:
M /branches/fpc_2_3/compiler/ppcgen/ngppcset.pas
* disable jump tables for darwin/ppc64 for now, don't work
yet for some reason
........
r6451 | florian | 2007-02-11 23:54:37 +0100 (Sun, 11 Feb 2007) | 3 lines
Changed paths:
M /branches/fpc_2_3/compiler/ncal.pas
M /branches/fpc_2_3/compiler/nutils.pas
M /branches/fpc_2_3/compiler/optcse.pas
* improved cse
* better complexity calculation for subscript nodes with classes or interfaces
........
r6456 | jonas | 2007-02-12 19:33:22 +0100 (Mon, 12 Feb 2007) | 4 lines
Changed paths:
M /branches/fpc_2_3/compiler/nutils.pas
+ support for notn,shln,shrn,equaln,unequaln,gtn,gten,ltn,lten in
node_cplexity()
* mark muln,divn,modn as more complex
........
r6469 | jonas | 2007-02-13 15:56:01 +0100 (Tue, 13 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/optcse.pas
* fixed when cross-compiling a 64 bit compiler from a 32 bit platform
........
r6471 | jonas | 2007-02-13 16:17:16 +0100 (Tue, 13 Feb 2007) | 3 lines
Changed paths:
M /branches/fpc_2_3/compiler/powerpc64/cputarg.pas
* include stabs support (can work on darwin/ppc64, but doesn't work
yet)
........
r6473 | jonas | 2007-02-13 16:45:48 +0100 (Tue, 13 Feb 2007) | 3 lines
Changed paths:
M /branches/fpc_2_3/compiler/powerpc64/cgcpu.pas
M /branches/fpc_2_3/compiler/powerpc64/cpupara.pas
* R2 is a volatile and usable register under darwin/ppc64
* R13 is a reserved non-volatile register under darwin/ppc64 (tls)
........
r6479 | jonas | 2007-02-13 20:40:50 +0100 (Tue, 13 Feb 2007) | 3 lines
Changed paths:
M /branches/fpc_2_3/compiler/systems/i_bsd.pas
* maxCrecordalign seems to have to be 8 rather 4, in spite of what
the ABI docs say (although they are contradictory to some extent)
........
r6487 | jonas | 2007-02-14 15:57:40 +0100 (Wed, 14 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/tests/webtbs/tw8153a.pp
* fixed for darwin/ppc64
........
r6488 | jonas | 2007-02-14 15:58:56 +0100 (Wed, 14 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/tests/webtbs/tw7851a.pp
* fixed for darwin/ppc64
........
r6494 | jonas | 2007-02-15 19:36:55 +0100 (Thu, 15 Feb 2007) | 3 lines
Changed paths:
M /branches/fpc_2_3/compiler/systems/i_bsd.pas
* set default debug info for darwin/ppc64 to dwarf2 since
it works better than stabs currently
........
r6500 | jonas | 2007-02-15 21:38:16 +0100 (Thu, 15 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/version.pas
* updated version to 2.3.0
........
r6505 | jonas | 2007-02-15 22:39:28 +0100 (Thu, 15 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/version.pas
* changed version to 2.3.1
........
r6511 | jonas | 2007-02-16 15:17:24 +0100 (Fri, 16 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/powerpc64/itcpugas.pas
* system_powerpc_darwin -> system_powerpc64_darwin
........
r6546 | daniel | 2007-02-18 15:48:54 +0100 (Sun, 18 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/ncginl.pas
M /branches/fpc_2_3/compiler/ncgld.pas
M /branches/fpc_2_3/compiler/ncgrtti.pas
M /branches/fpc_2_3/compiler/ncnv.pas
M /branches/fpc_2_3/compiler/ninl.pas
M /branches/fpc_2_3/compiler/nld.pas
M /branches/fpc_2_3/compiler/nutils.pas
M /branches/fpc_2_3/compiler/pinline.pas
M /branches/fpc_2_3/rtl/inc/astrings.inc
M /branches/fpc_2_3/rtl/inc/compproc.inc
M /branches/fpc_2_3/rtl/inc/sstrings.inc
M /branches/fpc_2_3/rtl/inc/text.inc
M /branches/fpc_2_3/rtl/inc/wstrings.inc
+ Val/str/read/write support for enumeration types.
........
r6547 | daniel | 2007-02-18 17:01:20 +0100 (Sun, 18 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/rtl/inc/sstrings.inc
* Fix val code that I broke.
........
r6571 | daniel | 2007-02-20 09:27:44 +0100 (Tue, 20 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/rtl/inc/astrings.inc
M /branches/fpc_2_3/rtl/inc/sstrings.inc
M /branches/fpc_2_3/rtl/inc/text.inc
M /branches/fpc_2_3/rtl/inc/wstrings.inc
* o2s -> ord2str, s2o -> str2ord
........
r6572 | daniel | 2007-02-20 09:33:30 +0100 (Tue, 20 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/ncgld.pas
M /branches/fpc_2_3/compiler/ncgrtti.pas
M /branches/fpc_2_3/compiler/ninl.pas
M /branches/fpc_2_3/compiler/nld.pas
* o2s -> ord2str, s2o -> str2ord
........
r6574 | daniel | 2007-02-20 12:07:58 +0100 (Tue, 20 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/rtl/inc/compproc.inc
* o2s -> ord2str, s2o -> str2ord
........
r6578 | daniel | 2007-02-20 22:18:49 +0100 (Tue, 20 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/rtl/inc/text.inc
* Change longint to valsint.
........
r6579 | daniel | 2007-02-20 22:29:09 +0100 (Tue, 20 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/ninl.pas
* Handle ordinal currency types.
........
r6580 | jonas | 2007-02-20 22:29:11 +0100 (Tue, 20 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/ncgrtti.pas
* fixed compilation for cpurequiresproperalignment
........
r6581 | jonas | 2007-02-20 22:30:21 +0100 (Tue, 20 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/ninl.pas
* fixed typo
........
r6582 | daniel | 2007-02-20 22:36:19 +0100 (Tue, 20 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/ninl.pas
* Set is_real to true.
........
r6590 | jonas | 2007-02-21 20:23:54 +0100 (Wed, 21 Feb 2007) | 2 lines
Changed paths:
M /branches/fpc_2_3/compiler/systems/i_bsd.pas
* set tf_dwarf_only_local_labels for darwin/ppc64
git-svn-id: trunk@6720 -
* symtables based on TFPHashObjectList and TFPObjectList
* rename torddef.typ to torddef.ordtype
* rename tfloatdef.typ to tfloatdef.floattype
* rename tdef.deftype to tdef.typ
* remove obsolete browser code, browcol is kept so the ide
can still be compiled
git-svn-id: trunk@5192 -
"while (x <> nil) ..." loops (not enabled by default since it
doesn't result in a speedup when applied to the compiler, so it
can't compensate the overhead of performing the optimization
either -- enable with -dprefetchnext)
git-svn-id: trunk@2517 -
assignment, report correct column for potential range errors of
call parameters)
* refactored code to check potential range check errors (check_ranges
in htypechk)
git-svn-id: trunk@2501 -
vs_written, vs_readwritten. vs_initialised is the old vs_assigned;
vs_used has been replaced by vs_read, vs_written and vs_readwritten
* the valid_for_*() routines in htypechk now get an extra parameter to
decide whether or not errors should be reported
git-svn-id: trunk@1913 -
* ppc get/freeintparaloc now check whether the parameter regs are
properly allocated/deallocated (and get an extra list para)
* ppc a_call_* now internalerrors if pi_do_call is not yet set
* fixed lot of missing pi_do_call's
on 64 bit CPUs it's equal to cs64bitdef while on 32 bit CPUs it's equal to s32bitdef
+ added defines CPU32 and CPU64 for 32 bit and 64 bit CPUs
* int64s/qwords are allowed as for loop counter on 64 bit CPUs
* procinfo renamed to current_procinfo
* procinfo will now be stored in current_module so it can be
cleaned up properly
* gen_main_procsym changed to create_main_proc and release_main_proc
to also generate a tprocinfo structure
* fixed unit implicit initfinal
a new procdef declaration
* aktprocsym removed
* lexlevel removed, use symtable.symtablelevel instead
* implicit init/final code uses the normal genentry/genexit
* funcret state checking updated for new funcret handling
and aliases for result and function name are added using absolutesym
* vs_hidden parameter for funcret passed in parameter
* vs_hidden fixes
* writenode changed to printnode and released from extdebug
* -vp option added to generate a tree.log with the nodetree
* nicer printnode for statements, callnode
* Fixed registers that are allocated but not freed in several nodes
* Tweak to register allocator to cause less spills
* 8-bit registers now interfere with esi,edi and ebp
Compiler can now compile rtl successfully when using new register
allocator
+ Add for loop code optimization using notifications
results in 1.5-1.9% speed improvement in nestloop benchmark
Optimization incomplete, compiler does not cycle yet with
notifications enabled.
+ Added read/write notifications of variables. These will be usefull
for providing information for several optimizations. For example
the value of the loop variable of a for loop does matter is the
variable is read after the for loop, but if it's no longer used
or written, it doesn't matter and this can be used to optimize
the loop code generation.
* Moved pocall_internconst to po_internconst because it is not a
calling type at all and it conflicted when inlining of these small
functions was requested
* The whilen and repeatn are now completely unified into whilerepeatn. This
allows the state tracker to change while nodes automatically into
repeat nodes.
* Resulttypepass improvements to the notn. 'not not a' is optimized away and
'not(a>b)' is optimized into 'a<=b'.
* Resulttypepass improvements to the whilerepeatn. 'while not a' is optimized
by removing the notn and later switchting the true and falselabels. The
same is done with 'repeat until not a'.
* foreach gets extra argument for passing local data to the
iterator function
* -CR checks also class typecasts at runtime by changing them
into as
* fixed compiler to cycle with the -CR option
* fixed stabs with elf writer, finally the global variables can
be watched
* removed a lot of routines from cga unit and replaced them by
calls to cgobj
* u32bit-s32bit updates for and,or,xor nodes. When one element is
u32bit then the other is typecasted also to u32bit without giving
a rangecheck warning/error.
* fixed pascal calling method with reversing also the high tree in
the parast, detected by tcalcst3 test
* register allocation is now handled by a class and is mostly processor
independent (+rgobj.pas and i386/rgcpu.pas)
* temp allocation is now handled by a class (+tgobj.pas, -i386\tgcpu.pas)
* some small improvements and fixes to the optimizer
* some register allocation fixes
* some fpuvaroffset fixes in the unary minus node
* push/popusedregisters is now called rg.save/restoreusedregisters and
(for i386) uses temps instead of push/pop's when using -Op3 (that code is
also better optimizable)
* fixed and optimized register saving/restoring for new/dispose nodes
* LOC_FPU locations now also require their "register" field to be set to
R_ST, not R_ST0 (the latter is used for LOC_CFPUREGISTER locations only)
- list field removed of the tnode class because it's not used currently
and can cause hard-to-find bugs
+ nopt.pas, nadd.pas, i386/n386opt.pas: optimized nodes for adding strings
and constant strings/chars together
* n386add.pas: don't copy temp strings (of size 256) to another temp string
when adding
