* device/lib/pic16/startup/crt0i.c (_cinit): local variables where

* device/lib/pic16/startup/crt0i.c (_cinit): local variables where
moved to level 0 and declared as static. Also they are explicit
placed in access bank. This was necessery because some times they
might cross memory bank boundaries. crt0iz.c is *NOT* updated!!!
* src/pic16/device.h: added flag OPTIMIZE_CMP to enable some compare
optimizations. Currently only compare to unsigned char is implemented,
* src/pic16/gen.c: added fReturnIdx array,
* (struct resolvedIfx) is moved to gen.h and made public,
* (struct _G): added sregsAlloc and sregsAllocSet fields,
* (aopForSym): added an optimization to directly store in stack of
the operand of a SEND iCode,
* (pic16_aopOp): don't return return registers as strings (AOP_STR)
but as registers instead (AOP_REG) using the fReturnIdx array,
* (pic16_freeAsmop): remove the freed register from the
_G.sregsAlloc field,
* (pic16_aopGet): in case AOP_STR, the compare to 'a' is changed to
a compare of 'WREG',
* (pic16_popGetTempRegCond): changed function prototype, now
function takes also a bitVector argument v which holds the current
set of registers that are allocated for stack access by aopForSym,
registers allocated in aopForSym for accessing stack symbols are not
any more part of the functions usedRegs field,
* (genCall): some times aopOp is called for a stack variable to be
send, aopForSym might perform the push, if this is true make sure
that genCall doesn't push the variable twice by testing _G.resDirect,
* (genFunction): changed testing for unspecified interrupt number
from 256 to INTNO_UNSPEC,
* modified selection scheme of frame pointer generation. Previously
if function did use local registers a frame pointer was generated,
now a frame pointer is generated only if function has arguments
(that need PLUSW2 register access), or has stack arguments, or the
compiler is not instructed to omit the frame pointer,
* (genEndFunction): before restoring local registers that were saved
in the function preamble, also restore the registers that *might*
have been allocated for stack access,
* (genRet): removed some old comments,
* (genCmp, the active (RN's) version): added a call to the
pic16_genCmp_special function to perform the compare with a more
robust and optimized way,
* (genInline): a feature has been added in inline code generation,
which allows a wildcard variable substitution when writing inline
assembly. Code is incomplete and experimental therefore undocumented,
* (genCast): changed order of aopOp for result and right to allow
aopForSym to directly load the result if possible,
* src/pic16/genutils.c (selectCompareOp, pic16_genCmp_special): NEW,
perform an optimized compare on some selected special occasions,
* src/pic16/genutils.h: declaration of resolvedIfx structure from gen.c,
* src/pic16/glue.c (pic16createInterrupVect): make sure we never
generate an IVT any more,
* src/pic16/main.c (pic16_optionsTable): added command line option
--optimize-cmp,
* (_pic16_initPaths): when calling C preprocessor define pic18fXXXX
macro too, when calling assembler define pic18fXXXX *and* __18Fxxxx
macros,
* src/pic16/NOTES: Raphael Neider added in list of active developers
* src/pic16/pcode.c (OPT_TYPE_STR): added strings jumptable_begin and
jumptable_end to prevent bug #,
* (pic16_pciADDWFC, ADDFWC, COMF, CLRF): added some missing flags in
inCond and outCond fields,
* src/pic16/pcoderegs.c (pCodeOptime2pCodes): add a fix for bug #,
* src/pic16/ralloc.c (serialRegAssign): explicit set willCS to 0 to
turn off register spilling,
* (packRegsForOneUse): synced with other ports' versions although it
is not used currently,
* (pic16_packRegisters): added an optimization while reading
structure bitfields, some registers may be saved (malloc code is
decreased by 80 bytes)

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@3694 4a8a32a2-be11-0410-ad9d-d568d2c75423