llvm-svn: 114447

SelectionDAG::getExtLoad overload, and eliminate it.

llvm-svn: 114446

llvm-svn: 114445

llvm-svn: 114444

getLoad overloads.

llvm-svn: 114443

with SVOffset computation.

llvm-svn: 114442

llvm-svn: 114439

llvm-svn: 114437

no functionality change (step #1)

llvm-svn: 114436

llvm-svn: 114435

llvm-svn: 114434

llvm-svn: 114433

llvm-svn: 114432

llvm-svn: 114431

I am unable to write a test for this case, help is solicited, though...
What I did is to tickle the code in the debugger and verify that we do the right thing.

llvm-svn: 114430

Added an additional PBQP problem builder which adds coalescing costs (both between pairs of virtuals, and between virtuals and physicals).

llvm-svn: 114429

into OptimizeCompareInstr.
This necessitates the passing of CmpValue around,
so widen the virtual functions to accomodate.

No functionality changes.

llvm-svn: 114428

llvm-svn: 114427

pass a completely incorrect SrcValue, which would result in a miscompile with
combiner-aa.

llvm-svn: 114411

llvm-svn: 114410

llvm-svn: 114409

"getFixedStack" on the MachinePointerInfo class.  While
this isn't the problem I'm setting out to solve, it is the
right way to eliminate PseudoSourceValue, so lets go with it.

llvm-svn: 114406

llvm-svn: 114405

of the getLoad methods.  This fixes at least one bug where an incorrect
svoffset is passed in (a potential combiner-aa miscompile).

llvm-svn: 114404

into non-segment-relative copies.

llvm-svn: 114402

instead of srcvalue/offset pairs.  This corrects SV info for mem 
operations whose size is > 32-bits.

llvm-svn: 114401

llvm-svn: 114400

MachinePointerInfo.  Among other virtues, this doesn't silently  truncate the
svoffset to 32-bits.

llvm-svn: 114399

llvm-svn: 114397

eliminating some weird "infer a frame address" logic which was dead.

llvm-svn: 114396

llvm-svn: 114395

MachinePointerInfo, propagating the type out a level of API.  Remove
the old MachineFunction::getMachineMemOperand impl.

llvm-svn: 114393

llvm-svn: 114391

to the MachineFunction construction methods.

llvm-svn: 114390

MachinePointerInfo struct, no functionality change.

This also adds an assert to MachineMemOperand::MachineMemOperand
that verifies that the Value* is either null or is an IR pointer type.

llvm-svn: 114389

llvm-svn: 114387

For now, just disable folding the load into the call.

llvm-svn: 114386

llvm-svn: 114383

llvm-svn: 114382

define double @foo(double %x, double %y, i1 %c) nounwind {
  %a = fdiv double %x, 3.2
  %z = select i1 %c, double %a, double %y
  ret double %z
}

Was:
_foo:
        divsd   LCPI0_0(%rip), %xmm0
        testb   $1, %dil
        jne     LBB0_2
        movaps  %xmm1, %xmm0
LBB0_2:
        ret

Now:
_foo:
        testb   $1, %dil
        je      LBB0_2
        divsd   LCPI0_0(%rip), %xmm0
        ret
LBB0_2:
        movaps  %xmm1, %xmm0
        ret

This avoids the divsd when early exit is taken.
rdar://8454886

llvm-svn: 114372