llvm-svn: 20276

and handle incomplete control dependences correctly.  This fixes:

Regression/Transforms/ADCE/dead-phi-edge.ll
  -> a missed optimization

Regression/Transforms/ADCE/dead-phi-edge.ll
  -> a compiler crash distilled from QT4

llvm-svn: 20227

llvm-svn: 18843

in some cases.

llvm-svn: 18842

llvm-svn: 18841

llvm-svn: 18840

llvm-svn: 18839

exercise that I'm not interested in tackling right now.  Just punt and treat them
like unwind's.

This 'fixes' test/Regression/Transforms/ADCE/unreachable-function.ll

llvm-svn: 17106

llvm-svn: 17043

llvm-svn: 16432

Patch contributed by Paolo Invernizzi. Thanks Paolo!

llvm-svn: 16368

Move include/Config and include/Support into include/llvm/Config,
include/llvm/ADT and include/llvm/Support. From here on out, all LLVM
public header files must be under include/llvm/.

llvm-svn: 16137

llvm-svn: 14839

This fixes PR332 and ADCE/2004-05-04-UnreachableBlock.llx

llvm-svn: 13349

llvm-svn: 12814

llvm-svn: 12813

llvm-svn: 12811

llvm-svn: 12810

call and invoke instructions that are known to not write to memory.

llvm-svn: 12807

llvm-svn: 11049

llvm-svn: 10539

llvm-svn: 10161

llvm-svn: 10127

llvm-svn: 10111

llvm-svn: 10032

llvm-svn: 9903

Header files will be on the way.

llvm-svn: 9298

llvm-svn: 9027

llvm-svn: 8625

llvm-svn: 8469

llvm-svn: 8462

llvm-svn: 8030

llvm-svn: 7944

llvm-svn: 7492

llvm-svn: 6891

want to mark it live if it is an unconditional branch.  This fixes bug:
ADCE/2002-05-28-Crash.ll and makes this pass _much_ more useful.

llvm-svn: 6887

This was because we were deleting large chunks of functions without an exit block, because the post-dominance
information was not useful.  This broke crafty and twolf.

llvm-svn: 6698

llvm-svn: 6306

llvm-svn: 5952

llvm-svn: 5872