llvm-svn: 38525

as the current DSE, but it only a linear scan over each block, rather than quadratic.  Eventually
(once it has been improved somewhat), this will replace the current DSE.

NOTE: This has not yet been extensively tested.
llvm-svn: 38517

llvm-svn: 38516

llvm-svn: 38515

llvm-svn: 38514

llvm-svn: 38513

pedantic satisfaction level.

llvm-svn: 38512

llvm-svn: 38511

llvm-svn: 38510

llvm-svn: 38509

llvm-svn: 38508

llvm-svn: 38507

llvm-svn: 38506

llvm-svn: 38505

llvm-svn: 38504

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: 38502

llvm-svn: 38501

llvm-svn: 38500

llvm-svn: 38497

llvm-svn: 38496

llvm-svn: 38495

llvm-svn: 38494

llvm-svn: 38493

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

llvm-svn: 38483

Move some key maps from std::map to DenseMap.  This improves the time to optimize Anton's testcase from 17.5s
to 15.7s.

llvm-svn: 38480

Use a cheaper test, delaying calling find_leader() until we know that it's necessary.  This improves
the time to optimize Anton's testcase from 21.1s to 17.6s.

llvm-svn: 38479

in addition to the intrinsic forms. Add spill-folding entries for these new
instructions, and for the scalar min and max instrinsic instructions which
were missing. And add some preliminary ISelLowering code for using the new
non-intrinsic vector sqrt instruction, and fneg and fabs.

llvm-svn: 38478

llvm-svn: 38477

This reduces the time to optimize Anton's testcase from 31.2s to 21.s!

llvm-svn: 38475

llvm-svn: 38474

simplifying loads and stores.

llvm-svn: 38473

llvm-svn: 38472

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

Make the assignment operator for SmallPtrSet return a reference, and fix a long-standing bug in the copy
ctor while I'm at it.

Thanks to Chris Lattner for help with this patch.

llvm-svn: 38470

llvm-svn: 38469