be used (TBD in a future commit) for optimizing x:=-x and x:=not x on CPUs
that support performing these operations directly in memory (such as x86)
git-svn-id: trunk@35749 -
63, instead of comparing it to 64 and branching. Note that, although this
changes the behaviour of 64-bit shifts by values larger than 64 (when stored
in a variable), it actually makes them consistent with both the code,
generated on x86_64, as well as with 64-bit shift by constant on i386 itself.
git-svn-id: trunk@35727 -
ad hoc set constants containing varying number cdecl-like calling
conventions
o added pocall_sysv_abi_cdecl and pocall_ms_abi_cdecl to cstylearrayofconst
o also allow C-style blocks with mwpascal instead of cdecl (mwpascal = cdecl
with "const" = "constref" for record parameters)
o did not touch cases related to name mangling and import/export names,
because those are a real mess and easily break things left and right :/
git-svn-id: trunk@35479 -
o separate information for reading and writing, because e.g. in a
try-block, only the writes to local variables and parameters are
volatile (they have to be committed immediately in case the next
instruction causes an exception)
o for now, only references to absolute memory addresses are marked
as volatile
o the volatily information is (should be) properly maintained throughout
all code generators for all archictures with this patch
o no optimizers or other compiler infrastructure uses the volatility
information yet
o this functionality is not (yet) exposed at the language level, it
is only for internal code generator use right now
git-svn-id: trunk@34996 -
* It is now only used to select size of vector instructions (i.e. 128 or 256 bits)
* Scalar instructions reverted to use attsufINT suffix (selecting between 32 or 64 bits).
* Additionally, vcvtsi2sd and vcvtsi2ss with rm64 operand are x86_64 only.
git-svn-id: trunk@34942 -
it was AT_NONE, which is invalid and should never be used
* explicitly pass the correct value for all calls to those methods elsewhere
in the compiler
git-svn-id: trunk@34250 -
symbol is defined
o removed all places where AB_INDIRECT symbols were explicitly generated
o only generate AB_INDIRECT symbols for AT_DATA on systems_indirect_var_imports
o for some symbols an indirect symbol is always required (because they are
dereferenced by code in RTL units) -> use new AT_DATA_FORCEINDIRECT type
git-svn-id: trunk@34165 -
tasmdata.DefineAsmSymbol() and all routines that call it
o will be used to automatically generate AB_INDIRECT sybols when
necessary
git-svn-id: trunk@34164 -
--- Reverse-merging r33524 into '.':
U compiler\i386\popt386.pas
U compiler\x86\cgx86.pas
--- Recording mergeinfo for reverse merge of r33524 into '.':
U .
git-svn-id: trunk@33527 -
optimizer which cannot do this properly due to missing information about flags. By doing
so the size of the compiler executable gets reduced by ~1 %
git-svn-id: trunk@33524 -
In comparison with the original patch, support for a i386 has been added as well as a test program.
Further, a small issue with xbegin has been fixed
git-svn-id: trunk@33375 -
x86/cgx86.pas, tcgx86:
+ new method make_direct_ref() which is used to convert an indirect reference into a direct one (uses the boolean field in_make_direct_ref to avoid recursive calls)
* make_simple_ref: call make_direct_ref() before anything else
* a_loadaddr_ref_ref: call make_direct_ref() (the loading could probably be folded into the loadaddr method, but for now that is sufficent)
i386/cgcpu.pas, tcg386:
* a_loadaddr_ref_cgpara: call make_direct_ref(); the same remark as for a_loadaddr_ref_ref() applies here
git-svn-id: trunk@33280 -
* a_load_ref_cgpara: call make_simple_ref() before calling the base a_load_ref_cgpara()
x86/cgx86.pas, tcgx86:
* a_loadfpu_ref_reg, a_loadfpu_reg_ref, g_concatcopy: call make_simple_ref() on the passed references
git-svn-id: trunk@33277 -
i386/popt386.pas, PeepHoleOptPass1:
* disable the call to RegLoadedWithNewValue() as that method isn't implemented for any of the x86 optimizers (but add a ToDo so that it isn't forgotten)
git-svn-id: trunk@33273 -
