Store the predecessor MBB in the PHIUnion, rather than an index, since the indices will change after renumbering.

llvm-svn: 53985

llvm-svn: 52016

llvm-svn: 52013

Correctly construct live intervals for the copies we inserted into the predecessors of a block containing a PHI.

llvm-svn: 51950

llvm-svn: 51922

Preserve the register coallescer, and update live intervals more correctly by triggering a renumbering after phi elimination.

llvm-svn: 51780

address of the PassInfo directly instead of calling getPassInfo.
This eliminates a bunch of dynamic initializations of static data.

Also, fold RegisterPassBase into PassInfo, make a bunch of its
data members const, and rearrange some code to initialize data
members in constructors instead of using setter member functions.

llvm-svn: 51022

several things that were neither in an anonymous namespace nor static
but not intended to be global.

llvm-svn: 51017

node and its inputs.

llvm-svn: 49070

unknown defining inst after PHI elimination.

llvm-svn: 49069

llvm-svn: 49043

llvm-svn: 48973

Remove some unneeded code for LiveInterval joining, and fix a bug in the Phi elimination algorithm where we were accidentally reasoning about
the source rather than the destination.

llvm-svn: 48936

llvm-svn: 48811

llvm-svn: 48803

llvm-svn: 48802

llvm-svn: 48739

With this pass, StrongPHIElim can compile very simple testcases correctly.  There's still a ways
to go before it's ready for prime time, though.

llvm-svn: 48719

the coalescer.  This doesn't really work, but gets us farther than
before.

llvm-svn: 48446

llvm-svn: 48278

feed the PHI instructions.  We'll need these IDs in order to update LiveIntervals properly.

llvm-svn: 48277

Move StrongPHIElimination after live interval analysis.  This will make things happier down the road.

llvm-svn: 48138

llvm-svn: 47996

findRegisterUseOperandIdx, findRegisterDefOperandIndx. Fix some naming inconsistencies.

llvm-svn: 47927

llvm-svn: 46263

llvm-svn: 46218

llvm-svn: 46217

MachineRegisterInfo.  Once all clients are switched over, the former will be going away.

llvm-svn: 45805

copies is made.

llvm-svn: 45799

llvm-svn: 45797

llvm-svn: 45791

Clean up StrongPHIElimination a bit, and add some more comments to the internal structures.  There's
still more work to do on this front.

llvm-svn: 45783

llvm-svn: 45775

llvm-svn: 45774

llvm-svn: 45773

llvm-svn: 45759

llvm-svn: 45738

llvm-svn: 45719

llvm-svn: 45718

that "machine" classes are used to represent the current state of
the code being compiled.  Given this expanded name, we can start 
moving other stuff into it.  For now, move the UsedPhysRegs and
LiveIn/LoveOuts vectors from MachineFunction into it.

Update all the clients to match.

This also reduces some needless #includes, such as MachineModuleInfo
from MachineFunction.

llvm-svn: 45467