llvm-svn: 84431

llvm-svn: 84425

stack slots and giving them different PseudoSourceValue's did not fix the
problem of post-alloc scheduling miscompiling llvm itself.
- Apply Dan's conservative workaround by assuming any non fixed stack slots can
alias other memory locations. This means a load from spill slot #1 cannot 
move above a store of spill slot #2. 
- Enable post-alloc scheduling for x86 at optimization leverl Default and above.

llvm-svn: 84424

llvm-svn: 84411

llvm-svn: 84410

llvm-svn: 84408

instructions.

llvm-svn: 84404

llvm-svn: 84403

llvm-svn: 84399

accessible through opt.  Patch by Tobias Grosser!

llvm-svn: 84397

llvm-svn: 84396

LLVMBuildMalloc was reimplemented but with the bug that it didn't insert the
resulting instruction.

llvm-svn: 84374

llvm-svn: 84373

llvm-svn: 84372

allowing it to simplify the crazy constantexprs in the testcases
down to something sensible.  This allows -std-compile-opts to
completely "devirtualize" the pointers to member functions in
the testcase from PR5176.

llvm-svn: 84368

llvm-svn: 84358

llvm-svn: 84357

llvm-svn: 84356

llvm-svn: 84355

More to follow...

llvm-svn: 84352

llvm-svn: 84348

llvm-svn: 84344

llvm-svn: 84336

llvm-svn: 84327

Distinquish stack slots from other stack objects. They (and fixed objects) get FixedStack PseudoSourceValues.

llvm-svn: 84326

llvm-svn: 84321

necessarily fixed. Only those will negative frame indices are "fixed."

llvm-svn: 84315

llvm-svn: 84311

updating the callgraph when introducing a call.

llvm-svn: 84310

llvm-svn: 84300

llvm-svn: 84299

to be more general and understand more varieties of loops.

Teach CodePlacementOpt to reorganize the basic blocks of a loop so that
they are contiguous. This also includes a fair amount of logic for preserving
fall-through edges while doing so. This fixes a BranchFolding-ism where blocks
which can't be made to use a fall-through edge and don't conveniently fit
anywhere nearby get tossed out to the end of the function.

llvm-svn: 84295

Update testcases that rely on malloc insts being present.

Also prematurely remove MallocInst handling from IndMemRemoval and RaiseAllocations to help pass tests in this incremental step.

llvm-svn: 84292

llvm-svn: 84288

llvm-svn: 84279

llvm-svn: 84276

llvm-svn: 84273

load, to help SelectionDAG fold them into the loads, unless
conditions are unfavorable.

llvm-svn: 84271

llvm-svn: 84264

If there is not any llvm instruction associated with each lexical scope encoded in debug info then create such scope on demand for variable info.

llvm-svn: 84262