Rewrite LiveVariable liveness computation. The new implementation is much simplified. It eliminated the nasty recursive routines and removed the partial def / use bookkeeping. There is also potential for performance improvement by replacing the conservative handling of partial physical register definitions. The code is currently disabled until live interval analysis is taught of the name scheme.

This patch also fixed a couple of nasty corner cases.

llvm-svn: 49784

llvm-svn: 49783

from transforming loops and adding a separate loop pass for removing
loops with know trip counts.  Until that happens, ADCE is miscompiling this code.

llvm-svn: 49769

llvm-svn: 49768

llvm-svn: 49766

llvm-svn: 49765

puts its result in a 32-bit GPR.

llvm-svn: 49762

memcpy lowering code; this ensures that the size node has the desired
result type. This fixes a regression from r49572 with @llvm.memcpy.i64
on x86-32.

llvm-svn: 49761

llvm-svn: 49760

llvm-svn: 49759

to 64-bit GPR registers on x86-64.

llvm-svn: 49757

the scheduler has inserted no-ops. This fixes
the 2006-07-03-schedulers.ll regression on ppc32.

llvm-svn: 49747

processes, but requires the project to use -j.

llvm-svn: 49744

VisualStudio project files updated.  #include <algorithm> added to make VisualStudio happy.  Also had to undefine setjmp because of #include <csetjmp> turning setjmp into _setjmp in VisualStudio.

llvm-svn: 49743

All values here fit in 32 bits.

llvm-svn: 49736

argument to the outer function, this isn't correct.

llvm-svn: 49731

for more space for displaying the graph.

llvm-svn: 49730

llvm-svn: 49729

llvm-svn: 49715

Sort sub-registers and super-registers lists according to super-sub register relations. e.g. X86::RAX sub-register list is EAX, AX, AL, AH (order of last two are not guaranteed).

llvm-svn: 49714

llvm-svn: 49713

ScheduleDAG; they don't correspond to any actual instructions so they
don't need to be scheduled.

This fixes a bug where the EntryToken was being scheduled multiple
times in some cases, though it ended up not causing any trouble because 
EntryToken doesn't expand into anything. With this fixed the schedulers
reliably schedule the expected number of units, so we can check this
with an assertion.

This requires a tweak to test/CodeGen/X86/loop-hoist.ll because it
ends up getting scheduled differently in a trivial way, though it was
enough to fool the prcontext+grep that the test does.

llvm-svn: 49701

instead of blue to distinguish them from regular dependencies.

llvm-svn: 49696

llvm-svn: 49681

llvm-svn: 49676

llvm-svn: 49674

llvm-svn: 49671

manually performing the comparison. This allows the special
case to work correctly even in the case where someone is
experimenting with a different comparison function :-).

llvm-svn: 49670

llvm-svn: 49669

this is now the default.

llvm-svn: 49667

memory intrinsic expansion code.

llvm-svn: 49666

stack tracebacks on Darwin x86-64 won't work by default;
nevertheless, everybody but me thinks this is a good idea.

llvm-svn: 49663

llvm-svn: 49661

llvm-svn: 49657

llvm-svn: 49652

Matthijs Kooijman

llvm-svn: 49648

llvm-svn: 49646

much simpler than in LegalizeDAG because calls are
not yet expanded into call sequences: that happens
after type legalization has finished.

llvm-svn: 49634

llvm-svn: 49617

llvm-svn: 49616