Keep RegAllocSimple in sync.

llvm-svn: 53351

with RegAllocLocal.

llvm-svn: 53347

of having local variables duplicate it.

llvm-svn: 53346

with extra checks.

llvm-svn: 53344

llvm-svn: 53316

llvm-svn: 53289

SINT_TO_FP and UINT_TO_FP.  This now produces
the same code as LegalizeDAG (the previous
code was based on a mistaken idea of what
LegalizeDAG did in this case).

llvm-svn: 53288

loads.

llvm-svn: 53287

FP_TO_UINT.

llvm-svn: 53286

llvm-svn: 53285

note since it is not clear whether it is correct.

llvm-svn: 53284

llvm-svn: 53281

functions and junk.

llvm-svn: 53279

llvm-svn: 53264

parent is non-null. It now always is.

llvm-svn: 53263

llvm-svn: 53262

available to getAtomic in addition to just getLoad and getStore,
to prevent MachineMemOperands with 0 alignment.

llvm-svn: 53261

Fix the build.  Apparently MachineInstr& is no longer implicitly convertable to MachineBasicBlock::iterator.

llvm-svn: 53260

rather than depending on LiveVariables.  This decreases compile time from:
0.5909s (LV + Regalloc) to 0.421s (just regalloc).

llvm-svn: 53256

llvm-svn: 53253

Do not CSE DEBUG_LOC, DBG_LABEL, DBG_STOPPOINT, DECLARE, and EH_LABEL SDNode's. This improves compile time slightly at -O0 -g.

llvm-svn: 53246

soft float: experiments show that targets aren't
expecting this for results or for operands.  Add
support select/select_cc result soft float and
correct operand soft float for these.

llvm-svn: 53245

in LegalizeTypes.

llvm-svn: 53244

llvm-svn: 53237

soft float.

llvm-svn: 53231

llvm-svn: 53215

MachineMemOperands. The pools are owned by MachineFunctions.

This drastically reduces the number of calls to malloc/free made
during the "Emit" phase of scheduling, as well as later phases
in CodeGen. Combined with other changes, this speeds up the
"instruction selection" phase of CodeGen by 10% in some cases.

llvm-svn: 53212

and reused across SelectionDAGs.

This drastically reduces the number of calls to malloc/free made during
instruction selection, and improves memory locality.

llvm-svn: 53211

llvm-svn: 53206

llvm-svn: 53202

properly track dead nodes that are on the original SDNode's operand
list but not the new one, and have no other uses.

llvm-svn: 53201

#include dependency on Support/MathExtras.h in the header file.

llvm-svn: 53200

llvm-svn: 53197

llvm-svn: 53196

their cleanup code. 

llvm-svn: 53194

simple const SDOperand*, which is what's usually needed.

For AddNodeIDOperands, which is small, just duplicate the function to
accept an SDUse*.

For SelectionDAG::getNode - Add an overload that accepts SDUse* that
copies the operands into a temporary SDOperand array, but also has
special-case checks for 0 through 3 operands to avoid the copy in
the common cases.

llvm-svn: 53183

llvm-svn: 53179

llvm-svn: 53177

llvm-svn: 53169

llvm-svn: 53166