This code will generate the following sequence on arm:
r1=dst
r0=src
movs r1, r0
rsbmi r1, r0, #0
movs will set the N-flag when the MSB of r0 is set, if it is set, rsb
will calculate dst:=0-src;
git-svn-id: trunk@21678 -
compiler/options.pas only defines FPC_HAS_INTERNAL_ABS_LONG for cpus
which support the intrinsic. No need to check again in the rtl.
git-svn-id: trunk@21677 -
The old version did not check the S-Postfix for MOV, which results in
removing instructions like:
movs r0, r0
which breaks later flag usage.
git-svn-id: trunk@21676 -
if the source value comes from a bit position > sizeof(smaller subsetreg)
(fixes internalerror 68991 when compiling fpcompactimg.inc for ppc64)
git-svn-id: trunk@21675 -
+ Store size of relocation and explicit addend in TObjRelocation (reusing 'orgsize' field for the latter). This removes need for reading addends back from section data, addends are stored in full 64 bits and therefore not truncated.
+ Relocation style is now controlled by relocs_use_addend variable instead of $ifdef's.
- Removed (never working) checks forbidding relocations of readonly sections. At the linking stage readonly sections *can* have relocations, executable stage is different matter to be handled elsewhere.
- removed ugly hack with mapping 32-bit absolute relocations to RELOC_RVA.
+ support 64-bit relative relocations.
* actualized list of x86_64 relocations.
git-svn-id: trunk@21662 -
This now generates:
mvn r0, r0, lsl #24/#16
mov r0, r0, lsr/asr #24/#16
The lsr/asr might be folded into a following instruction, making the
whole operation 1 cycle instead of 2-3 with the previous solution.
git-svn-id: trunk@21658 -
* pscanner.pas, tscannerfile.replaytoken: remove the checks for "sources_avail" and always update the read file/line information
* fppu.pas, tppumodule.readsourcefiles: always load at least the filenames which were used when compiling the unit from the ppu file, so that file/line information will be correctly shown, but don't touch the "sources_avail" flag of the tppumodule
git-svn-id: trunk@21657 -
* pgenutil.pas: factor out the reading of generic specialization parameters (parse_generic_specialization_types) and the generation of a generic type name (generate_generic_name)
* pdecsub.pas, parse_proc_head:
* also allow an interface alias declaration if an identifier is followed by a "<" (which starts a specialization)
+ add a procedure "consume_generic_interface" which parses such a specialization (by using "parse_generic_specialization_types") - this is needed, because "consume_generic_type_parameter" can (and should not!) handle "ISomeIntf<Integer, T>" or (somewhen in the future) "ISomeIntf<TSomeOtherGeneric<T>>" - and finds the correct symbol for the interface (by utilizing the "generate_generic_name" function)
* generate the correct mapping entry (for the generic it's only needed for checking (if any), but for a specialization it's essential that we reference the correct specialization)
+ add tests which were included with the issue and also two additional ones
Note: In non-Delphi modes an interface alias can be done like in Delphi mode; "specialization" is not necessary and furthermore not even allowed!
git-svn-id: trunk@21656 -
* pscanner.pas: change SizeInt to ASizeInt for tokenreadsizeint and tokenwritesizeint and change necessary other locations for record- and replaytokenbuffers
+ Added a test in the hope that some test-platforms do cross platform (e.g. win32 => win64) compilation.
git-svn-id: trunk@21651 -
OP_ADD, OP_SUB, OP_ORR will be split into two intructions if possible when a load/const
construction is required.
OP_AND is a bit different, because we can't just split it up, but we try
to find a two instruction BIC-equivalent to it.
Till now code like
a:= a and $FFFF;
produced code like
mov r0, $FF00
orr r0, r0, $FF
and r1, r1, r0
With this addition we produce code like:
bic r0, r0, $FF00
bic r0, r0, $FF
Saving us at least a cycle and in some cases also a load from the
constant-pool.
This uses the new split_into_shifter_const function.
git-svn-id: trunk@21647 -
* use split_into_shifter_const to reduce the MOV/ORR combination to a
single check and allow a broader rang of combinations.
* Introduce MVN/BIC combination to load values which have more 1 than 0
bits set (like small negative values)
git-svn-id: trunk@21646 -
This functions tries to split up a 32-bit value into two shifter
constants. This approach finds a broader range for two shifter constant
combinations.
git-svn-id: trunk@21645 -
they are distinguisable from calculated fields with a FieldNo of -1.
* Added test to check for an exception when the Fields do not correspond to
the underlying data.
* Improved exception message when the Fields do not correspond with the data
git-svn-id: trunk@21641 -
