llvm-svn: 39979

llvm-svn: 39921

llvm-svn: 39856

This patch fills the last necessary bits to enable exceptions
handling in LLVM. Currently only on x86-32/linux.

In fact, this patch adds necessary intrinsics (and their lowering) which
represent really weird target-specific gcc builtins used inside unwinder.

After corresponding llvm-gcc patch will land (easy) exceptions should be
more or less workable. However, exceptions handling support should not be 
thought as 'finished': I expect many small and not so small glitches
everywhere.

llvm-svn: 39855

llvm-svn: 39827

feedback. This theoretically makes the common (scalar) case more efficient.

llvm-svn: 39823

llvm-svn: 39817

Change name of -sched option and DEBUG_TYPE to
pre-RA-sched; adjust testcases.

llvm-svn: 39816

should be output as unsigned values.  Checked against
gcc.

llvm-svn: 39775

llvm-svn: 39748

llvm-svn: 39732

llvm-svn: 38535

llvm-svn: 38534

llvm-svn: 38525

llvm-svn: 38516

the new CONCAT_VECTORS node type instead, as that's what legalize
uses now. And add a peep for EXTRACT_VECTOR_ELT of INSERT_VECTOR_ELT.

llvm-svn: 38503

llvm-svn: 38496

llvm-svn: 38495

Thanks to Lauro for spotting this!

llvm-svn: 38491

undef in either the left or right operand.

llvm-svn: 38489

When a node value is only used by a CopyToReg, use the user's dest. This should not be restricted to nodes that produce only a single value.

llvm-svn: 38485

llvm-svn: 38484

simplifying loads and stores.

llvm-svn: 38473

register ordering, for both physical and virtual registers. Update the PPC
target lowering for calls to expect registers for the call result to
already be in target order.

llvm-svn: 38471

updating it with calls to setIndexedLoadAction/setIndexedStoreAction,
which only update a few bits at a time. This avoids ostensible
undefined behavior of operationg on values which may be
trap-representations, and as a practical matter fixes errors from
valgrind, which doesn't track uninitialized memory with bit
granularity.

llvm-svn: 38468

DAGCombiner.cpp: In member function 'llvm::SDOperand<unnamed>::DAGCombiner::visitOR(llvm::SDNode*)':
DAGCombiner.cpp:1608: warning: passing negative value '-0x00000000000000001' for argument 1 to 'llvm::SDOperand llvm::SelectionDAG::getConstant(uint64_t, llvm::MVT::ValueType, bool)'

oiy.

llvm-svn: 38458

llvm-svn: 38453

llvm-svn: 37964

so must be lowered to a value, not nothing at all.
Subtle point: I made eh_selector return 0 and
eh_typeid_for return 1.  This means that only
cleanups (destructors) will be run as the exception
unwinds [if eh_typeid_for returned 0 then it would
be as if the first catch always matched, and the
corresponding handler would be run], which is
probably want you want in the CBE.

llvm-svn: 37947

directly: they need to be turned into byte offsets
(often the same, but may not be if there are many
type infos).

llvm-svn: 37942

llvm-svn: 37940

fix, that is adequate while PR1508 remains unresolved.

llvm-svn: 37938

instead.

llvm-svn: 37937

llvm-svn: 37935

llvm-svn: 37934

llvm-svn: 37922

endian swapping should be done, and update the code to use it. This fixes
some register ordering issues on big-endian systems, such as PowerPC,
introduced by the recent illegal by-val arguments changes.

llvm-svn: 37921

Almost all occurrences of "bytecode" in the sources have been eliminated.

llvm-svn: 37913

exception handling table if we encounter it multiple
times.  Filters could be folded harder than this, but
that would mean a lot more work for not much gain.

llvm-svn: 37908

llvm-svn: 37890