fixes an assert reading "1239123123123123" when the result is already 64-bit.

llvm-svn: 155329

llvm-svn: 155328

intructions are processed. So there's no need to look at them if they're used as
operands of other instructions.

llvm-svn: 155327

Make Extract128BitVector and Insert128BitVector take an unsigned instead of an ConstantNode SDValue. getConstant was almost always called just before only to have the functions take it apart and build a new ConstantSDNode.

llvm-svn: 155325

llvm-svn: 155321

Make calls to getVectorShuffle more consistent. Use shuffle VT for calls to getUNDEF instead of requerying. Use &Mask[0] instead of Mask.data().

llvm-svn: 155320

llvm-svn: 155319

Simplify code by converting multiple places that were manually concatenating 128-bit vectors to use either CONCAT_VECTORS or a helper function. CONCAT_VECTORS will itself be lowered to the same pattern as before. The helper function is needed for concats of BUILD_VECTORs since getNode(CONCAT_VECTORS) will just return a large BUILD_VECTOR and we may be trying to lower large BUILD_VECTORS when this occurs.

llvm-svn: 155318

llvm-svn: 155315

Found by valgrind.

llvm-svn: 155313

1) Make the checked assertions a bit more precise. We really want the
   canonical forms coming out of reassociate to be exactly what is
   expected.
2) Remove other passes, and switch the test to actually directly check
   that reassociate makes the important transforms and
   canonicalizations.
3) Fold in a related test case now that we're using FileCheck. Make the
   same tidying changes to it.

llvm-svn: 155311

llvm-svn: 155310

llvm-svn: 155309

llvm-svn: 155307

names. This saves collecting types we normally don't care about.

llvm-svn: 155300

StringRef::getAsInteger

llvm-svn: 155298

llvm-svn: 155297

llvm-svn: 155296

llvm-svn: 155294

llvm-svn: 155291

It set NumLowBitAvailable = 3 which may not be true on all platforms.  We only
ever use 2 bits (the default) so this assumption can be safely removed

Should fix PR12612.

llvm-svn: 155288

Thanks to Andy Gibbs, to report the issue.

llvm-svn: 155287

llvm-svn: 155286

llvm-svn: 155285

llvm-svn: 155284

llvm-svn: 155283

llvm-svn: 155281

No functionality change.

llvm-svn: 155280

llvm-svn: 155270

VMUL and VEXT.

llvm-svn: 155258

The X86 target is editing the selection DAG while isel is selecting
nodes following a topological ordering. When the DAG hacking triggers
CSE, nodes can be deleted and bad things happen.

llvm-svn: 155257

llvm-svn: 155254

llvm-svn: 155253

Now that multiple DAGUpdateListeners can be active at the same time,
ISelPosition can become a local variable in DoInstructionSelection.

We simply register an ISelUpdater with CurDAG while ISelPosition exists.

llvm-svn: 155249

Instead of passing listener pointers to RAUW, let SelectionDAG itself
keep a linked list of interested listeners.

This makes it possible to have multiple listeners active at once, like
RAUWUpdateListener was already doing. It also makes it possible to
register listeners up the call stack without controlling all RAUW calls
below.

DAGUpdateListener uses an RAII pattern to add itself to the SelectionDAG
list of active listeners.

llvm-svn: 155248

llvm-svn: 155247

process any more Values.

llvm-svn: 155241

The <undef> flag on a def operand only applies to partial register
redefinitions. Only print the flag when relevant, and print it as
<def,read-undef> to make it clearer what it means.

llvm-svn: 155239

llvm-svn: 155235

llvm-svn: 155234