registers itself, it requires them to be in SSA form. Therefore we
spill all registers that are written more than once to memory.
+ support in the generic register allocator for generating code that is
SSA-safe
+ spilling helpers for llvm
git-svn-id: branches/hlcgllvm@26044 -
Other than arrays and complex procvardefs, all aggregates are currently
handled as opaque arrays of bytes
o special case: s80real (x87 extended type) is encoded as "array[0..9] of
byte" inside arrays, because when using the llvm type describing
"extended" llvm will handle it in an ABI-compliant way (allocating e.g.
16 bytes for it on Darwin and x86-64 platforms). Loading/storing them
always happens using instructions that only read/write 10 bytes, so
we only have to take care to convert them to the actual extended type
when indexing arrays/subscripting records (when records are no longer
handled in an opaque way)
git-svn-id: branches/hlcgllvm@26041 -
the paraloc information, and then adds llvm-specific information to the
paralocs
o only partially implemented, in particular function result handling is
not yet there
git-svn-id: branches/hlcgllvm@26040 -
basic block must end with a terminator instruciton (such as a branch) ->
when emitting a label, check whether the previous instruction is a
terminator instruction and if not, add an unconditional branch to the
label we are adding.
o Implemented at the tcg instead of at the thlcgobj level because
a) these methods don't need any high level type information
b) implementing them in thlcgobj would require making thlcg.a_label()
virtual and ensuring that no-one ever calls cg.a_label() in any
generic code
git-svn-id: branches/hlcgllvm@26038 -
o opcodes + string representation
o llvm string representations of targets supported by fpc
o supported fpc optimisations
o list of supported LLVM versions (currently only targeting 3.3)
git-svn-id: branches/hlcgllvm@26035 -
temp we allocate, we set the base register to a newly allocated
R_TEMPREGISTER. This allows for uniquely identifying a temp even if its
offset is modified.
git-svn-id: branches/hlcgllvm@26033 -
