e.g. being a const parameter or immutable temp. values), managed types like dyn. arrays, new string types and interfaces can be kept in registers.
git-svn-id: trunk@24953 -
that the type of the parameters can be determined automatically
o added compilerproc declarations for all helpers called in the compiler
via their assembler name, so we can look up the corresponding procdef
git-svn-id: trunk@23325 -
getintparaloc + adapted all call sites of getintparaloc. This
led to a number of additional, related changes:
o corrected the type information for some getintparaloc parameters
o don't allocate some intparalocs in cases they aren't used
o changed "const tvardata" parameter into "constref tvardata" for
fpc_variant_copy_overwrite to make pass-by-reference semantics
explicit
o moved a number of routines that now have to call find_system_type()
from cgobj to hlcgobj so that cgobj doesn't have to start depending
on the symtable unit
o added versions of the cpureg alloc/dealloc methods to hlcgobj that
call through to their cgobj counter parts, so we can call save/restore
the cpu registers before/after calling system helpers from hlcgobj
(not implemented in hlcgobj itself, because all basic register
allocator functionality is still part of cgobj/cgcpu)
git-svn-id: trunk@21696 -
future use by high level code generator targets
o this in turn required that all a_load*_loc* methods are called via
hlcg rather than via cg, since a location can be a subsetref/reg and
and those are no longer handled in tcg
o that then required moving several force_location_* routines into
thlcg because they use a_load_loc*, but did not take tdef size
parameters (which are required by the thlcg a_load_loc* routines)
o the only practical consequence is that from now on, you have to
use hlcg.location_force_mem/reg() (fpureg not yet) and
hlcg.gen_load_loc_cgpara() instead of the removed versions from ncgutil,
and hlcg.a_load*loc*() instead of cg.a_load*loc* if a subsetref/reg
might be involved
git-svn-id: trunk@21287 -
- i386/cgcpu.pas: removed segment check, rejecting references with segment here is too early. These references are passed to tcgx86.a_loadaddr_ref_reg, which can generate required code for them (or reject if they are not allowed for the target).
- ncgld.pas: removed "not tf_section_threadvars in target_info" condition, it is inverse to one on the following line, making non-generic branch impossible to execute.
+ Define FPC_SECTION_THREADVARS macro if corresponding flag is set for the target.
git-svn-id: trunk@21210 -
o support for the new codepage-aware ansistrings in the jvm branch
o empty ansistrings are now always represented by a nil pointer rather than
by an empty string, because an empty string also has a code page which
can confuse code (although this will make ansistrings harder to use
in Java code)
o more string helpers code shared between the general and jvm rtl
o support for indexbyte/word in the jvm rtl (warning: first parameter
is an open array rather than an untyped parameter there, so
indexchar(pcharvar^,10,0) will be equivalent to
indexchar[pcharvar^],10,0) there, which is different from what is
intended; changing it to an untyped parameter wouldn't help though)
o default() support is not yet complete
o calling fpcres is currently broken due to limitations in
sysutils.executeprocess() regarding handling unix quoting and
the compiler using the same command lines for scripts and directly
calling external programs
o compiling the Java compiler currently requires adding ALLOW_WARNINGS=1
to the make command line
git-svn-id: branches/jvmbackend@20887 -
verifier when -Cpjvmdalvik is used (including debug information). Using
-Cpjvmdalvik changes the semantics at the language-level in one case:
boolean(bytevar) will no longer return a boolean that contains the same
value as bytevar did, but will map the value to 0/1 (that also means that
such expressions cannot be passed to var-parameters in case of
-Cpjvmdalvik). Code compiled with -Cpjvmdalvik will also work fine on
the regular JVM, but it may be somewhat slower (it won't necessarily
be slower on Dalvik, because the .class -> .dex transformation
applies many optimizations itself)
git-svn-id: branches/jvmbackend@19743 -
o every porocedural variable type is represented by a class with one
public "invoke" method whose signature matches the signature of the
procvar
o internally, dispatching happens via java.lang.reflect.Method.invoke().
WARNING: while this allows calling private/protected or other methods
that are normally not accessible from another context, a security
manger can override this. If such a security manager is installed,
most procvars will cause security exceptions
o such dispatching also requires that all arguments are wrapped, but
that's done in the compiler-generated body of the invoke method,
so that procvars can also be called conveniently from Java code
o typecasting between a procedure of object and tmethod is supported,
as well as Delphi-style replacing of only the method pointer via
@procvar1=@procvar2.
o nested procvars are not yet supported, but most of the basic
infrastructure for them is already present
* all units/programs now get an internal __FPC_JVM_Module_Class_Alias$
type when compiled for the JVM target, which is an "external" class
that maps to the unit name. This is required to look up the
JLRMethod instances for regular functions/procedures
+ new tabstractprocdef.copyas() method that allows to create a procvar
from a procdef and vice versa
git-svn-id: branches/jvmbackend@18690 -
o primitive types are first boxed
o the parameter is passed inside an array of one class instance
o changing the parameter inside the routine (by assigning a value to it
like in Delphi.NET and different from regular Pascal code) will replace
this class instance (again boxing the value if required)
o on return, the class instance is extracted, unboxed if required, and
assigned back to the original location
o formal const parameters are handled without the extra array indirection,
since they cannot be changed
TODO: while writing tjvmcallparanode.handleformalcopyoutpara() I forgot that
calling getcopy on ttemprefnodes whose ttempcreatenode hasn't been copied
yet works fine, so that code is more complex than needed. Still have to
fix.
git-svn-id: branches/jvmbackend@18675 -
JDK class-style enums rather than plain ordinals like in Pascal
o for Pascal code, nothing changes, except that for the JVM target
you can always typecast any enum into a class instance (to interface
with the JDK)
o to Java programs, FPC enums look exactly like Java enum types
git-svn-id: branches/jvmbackend@18620 -
o since the JVM target has no stack/framepointer that can be passed
on to nested routines, all local variables and parameters accessed
from nested routines are grouped into a local record whose address
is passed to nested routines. The same technique is also required
for LLVM in the future
git-svn-id: branches/jvmbackend@18588 -
only JVM constructs that are already implemented, but also ones that
will be supported in the future but that aren't implemented yet (to
make it easier to already adapt code to the future changes)
git-svn-id: branches/jvmbackend@18498 -
o when allocating array temps for the JVM target, use the specified
"forcesize" for the first dimension, since the arraydef size may
be invalid (e.g., in case it's an array constructor)
git-svn-id: branches/jvmbackend@18468 -
o support for copying value parameters at the callee side if they were
passed by reference in hlcg
o JVM g_concatcopy() implementation for arrays
o moved code to get length of an array from njvminl to hlcgcpu so it can
be reused elsewhere as well
o export array copy helpers from system unit for use when assigning one
array to another
o some generic support for types that are normally not implicit pointers,
but which are for the JVM target (such as normal arrays)
* handle assigning nil to a dynamic array by generating a setlength(x,0)
node instead of by hardcoding a call to fpc_dynarray_clear, so
target-specific code can handle it if required
* hook up gethltemp() for JVM ttgjvm so array temps are properly
allocated
git-svn-id: branches/jvmbackend@18388 -
for regular temps. This is required for targets that need special
handling of the temps depending on the type
* converted most gettemp() calls to gethltemp() calls
git-svn-id: branches/jvmbackend@18376 -
