llvm-svn: 101334

llvm-svn: 101330

llvm-svn: 101325

llvm-svn: 101317

llvm-svn: 101315

llvm-svn: 101314

llvm-svn: 101276

llvm-svn: 101275

a bunch of stuff to support it.

llvm-svn: 101273

llvm-svn: 101272

llvm-svn: 101269

SelectionDAGBuilder. FunctionLoweringInfo isn't an ideal place for
them to live, but it's better than SelectionDAGBuilder for now.

llvm-svn: 101267

llvm-svn: 101266

llvm-svn: 101264

llvm-svn: 101263

don't need it.

llvm-svn: 101262

drop the redundant #ifndef NDEBUG.

llvm-svn: 101261

llvm-svn: 101260

SelectionDAGISel.

llvm-svn: 101258

llvm-svn: 101256

llvm-svn: 101255

llvm-svn: 101254

SelectionDAGISel::runOnMachineFunction into FunctionLowering.

llvm-svn: 101252

llvm-svn: 101251

llvm-svn: 101210

llvm-svn: 101206

llvm-svn: 101202

llvm-svn: 101183

llvm-svn: 101171

llvm-svn: 101170

Expand postra machine licm's capability a little more. If an instruction's register operands are all loop invariants, then it's safe to hoist it.

llvm-svn: 101167

Sometimes it is desirable to sink instructions along a critical edge:

x = ...
if (a && b) ...
else use(x);

The 'a && b' condition creates a critical edge to the else block, but we still
want to sink the computation of x into the block. The else block is dominated by
the parent block, so we are not pushing instructions into new code paths.

llvm-svn: 101165

Teach postra machine licm to hoist more obvious invariants, e.g. instructions with no source operands.

llvm-svn: 101154

llvm-svn: 101148

MachineBasicBlock::livein_iterator a const_iterator, because
clients shouldn't ever be using the iterator interface to
mutate the livein set.

llvm-svn: 101147

the rest of CodeGen.

llvm-svn: 101146

llvm-svn: 101145

llvm-svn: 101143

patch by Sylvere Teissier!

llvm-svn: 101106

llvm-svn: 101043