If there are two consecutive llvm.dbg.stoppoint calls then
it is likely that the optimizer deleted code in between these
two intrinsics. Keep only the last llvm.dbg.stoppoint in this case.

llvm-svn: 59657

llvm-svn: 59570

llvm-svn: 59569

This pass makes it easier to test wheter debugging info. influences optimization passes or not.

llvm-svn: 59552

Remove all dead globals from llvm.metadata.
Ignore linkonce linkage for selected llvm.dbg values.

llvm-svn: 59547

llvm-svn: 59538

llvm-svn: 59518

Give SIToFPInst preference over UIToFPInst because it is faster on platforms that are widely used.

llvm-svn: 59476

llvm-svn: 59471

llvm-svn: 59466

llvm-svn: 59454

This fixed PR3078.

llvm-svn: 59416

llvm-svn: 59409

llvm-svn: 59406

llvm-svn: 59403

llvm-svn: 59402

llvm-svn: 59401

llvm-svn: 59400

llvm-svn: 59398

a bit.  Next step is to factor out into their own helper functions.

llvm-svn: 59397

llvm-svn: 59395

llvm-svn: 59392

llvm-svn: 59390

folded into the select.

llvm-svn: 59389

Eliminate the cases checking for cond?0:-1, since that is already
handled by commutative checking.

llvm-svn: 59388

llvm-svn: 59381

llvm-svn: 59380

Strip debug information before stripping symbol names. 

llvm-svn: 59328

llvm-svn: 59208

llvm-svn: 59098

llvm-svn: 59093

llvm-svn: 59092

llvm-svn: 59077

llvm-svn: 59068

llvm-svn: 59063

llvm-svn: 59039

llvm-svn: 59012

llvm-svn: 59011

then do not split loop index.

llvm-svn: 58995

The previous patches didn't match correctly. Also, we need to make sure that
the conditional is the same before doing the transformation.

llvm-svn: 58978