allow runtime optimization if the destination is the
same as a source parameter
* tassignmentnode now sets aktassignmentnode global that can be used
to use the left node as a destination parameter and
skip the assignment
* disabled all cpu specific shortstr concat/append
git-svn-id: trunk@4770 -
tarrayconstructornode.inset_typeconvs() and fixed them:
* integers < 32 bit are converted to 32 bit (this was previously
done in the code generator for some targets, and not for others)
* currency is also converted to double for targets where currency = int64
* single is converted to double, except for x86_64 (is at least
necessary on darwin/ppc, darwin/i386 and linux/i386)
* enums are converted to 32 bit ints
* procvars are converted to pointers
* proper errors are given for various unsupported types
NOTE: in C, floating point constants are by default double, while in
FPC they are of type extended. On platforms where extended <> double,
such constants when passed to C varargs are automatically converted
to double by default (gives warning). If you want to pass them as
single or extended or get rid of the warning, use an explicit typecast
* increased ppu version because of introduction of new node flag
(nf_cvarargs for tarrayconstructornode)
* fixed tests/test/cg/tprintf
* changed tests/test/cg/cdecl/taoc5 to use explicit typecasts for
floating point constants passed to C varargs functions.
git-svn-id: trunk@2949 -
* proc to procvar moved from addrnode to typeconvnode
* inlininginfo is now allocated only for inline routines that
can be inlined, introduced a new flag po_has_inlining_info
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
+ 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'.
inlined from pexpr
* -an option that will write the secondpass nodes to the .s file, this
requires EXTDEBUG define to actually write the info
* fixed various internal errors and crashes due recent code changes
* 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
resulttype and first pass)
* made handling of read(ln)/write(ln) processor independent
* moved processor independent handling for str and reset/rewrite-typed
from firstpass to resulttype pass
* changed names of helpers in text.inc to be generic for use as
compilerprocs + added "iocheck" directive for most of them
* reading of ordinals is done by procedures instead of functions
because otherwise FPC_IOCHECK overwrote the result before it could
be stored elsewhere (range checking still works)
* compilerprocs can now be used in the system unit before they are
implemented
* added note to errore.msg that booleans can't be read using read/readln
