llvm-svn: 37376

Do not remove empty landing pads (EH table needs to be updated)

llvm-svn: 37375

llvm-svn: 37374

smaller than the preferred alignment, but so that the target can actually
specify a minimum alignment if needed.  This fixes some objc protocol
failures Devang tracked down.

llvm-svn: 37373

When a function has FP, the register scavenging spill slot offset already
was calculated.

llvm-svn: 37371

llvm-svn: 37366

llvm-svn: 37365

llvm-svn: 37362

llvm-svn: 37360

half of PR1421, by not decimating structs with holes that are the source and
destination of a memcpy.

llvm-svn: 37358

llvm-svn: 37355

matter until my last change).  Reenable tail merging by default.

llvm-svn: 37354

llvm-svn: 37353

For VFP2 fldm, fstm instructions, the condition code is printed after the address mode and size specifier. e.g. fstmiaseq, not fstmeqias.

llvm-svn: 37351

llvm-svn: 37350

llvm-svn: 37349

llvm-svn: 37348

debugging lines.

llvm-svn: 37347

llvm-svn: 37346

set this way is _SLOW_.  Somewhere down the line, I'll look at speeding it up.

llvm-svn: 37345

If there is an empty block between a source and its successor block, it still requires a unconditional branch.

llvm-svn: 37344

Very first part of a GVN-PRE implementation.  It currently performs a bunch of analysis, and nothing more.  It is also quite slow for the moment.  However,
it should give a sense of what's going on.

llvm-svn: 37343

llvm-svn: 37342

llvm-svn: 37341

llvm-svn: 37340

llvm-svn: 37331

llvm-svn: 37330

llvm-svn: 37328

llvm-svn: 37326

only one successor.

llvm-svn: 37324

Temporarily, this breaks CodeGen/Generic/2006-02-12-InsertLibraryCall.ll
by exposing an unrelated latent problem; working on that.

llvm-svn: 37323

llvm-svn: 37322

llvm-svn: 37321

llvm-svn: 37320

llvm-svn: 37319

Fix a typo that caused combiner to create mal-formed pre-indexed store where value store is the same as the base pointer.

llvm-svn: 37318

When considering blocks with more than 2 predecessors, merge the block with
the largest number of matching insns, rather than the first block found.
Considering that 1 matching insn is enough to show a win for candidates that
already end with a branch.

llvm-svn: 37315

llvm-svn: 37314

Mark all calls as "could throw", when exceptions are enabled. Emit necessary LP info too. This fixes PR1439

llvm-svn: 37311

llvm-svn: 37310