llvm-svn: 12385

be non-empty!  This fixes LowerSwitch/2004-03-13-SwitchIsDefaultCrash.ll

llvm-svn: 12384

llvm-svn: 12382

Require 'simplified' loops, not just raw natural loops.  This fixes
CodeExtractor/2004-03-13-LoopExtractorCrash.ll

llvm-svn: 12381

loop information won't see it, and we could have unreachable blocks pointing to
the non-header node of blocks in a natural loop.  This isn't tidy, so have the
loopsimplify pass clean it up.

llvm-svn: 12380

situations where there is a branch that goes to a block in another function.

llvm-svn: 12379

curly braceage

llvm-svn: 12378

llvm-svn: 12377

Make sure that the file interface header (IPO.h) is included first
remove dead #incldue

llvm-svn: 12375

llvm-svn: 12373

llvm-svn: 12372

llvm-svn: 12368

Fix InstCombine/2004-03-13-InstCombineInfLoop.ll which caused an infinite
loop compiling (I think) povray.

llvm-svn: 12365

 * Be a lot more accurate about what the effects will be when inlining a call
   to a function when an argument is an alloca.
 * Dramatically reduce the penalty for inlining a call in a large function.
   This heuristic made it almost impossible to inline a function into a large
   function, no matter how small the callee is.

llvm-svn: 12363

On the testcase from GCC PR12440, which has a LOT of loops (1392 of which require
preheaders to be inserted), this speeds up the loopsimplify pass from 1.931s to
0.1875s.  The loop in question goes from 1.65s -> 0.0097s, which isn't bad. All of
these times are a debug build.

This adds a dependency on DominatorTree analysis that was not there before, but
we always had dominatortree available anyway, because LICM requires both loop
simplify and DT, so this doesn't add any extra analysis in practice.

llvm-svn: 12362

boxed-sim.

llvm-svn: 12358

llvm-svn: 12357

Intrinsic::va*.  This avoid conflicting with macros in the stdlib.h file.

llvm-svn: 12356

llvm-svn: 12355

llvm-svn: 12353

could cause infinite loops.  Also, getUnderlyingObject can return null

llvm-svn: 12351

This comes up when you have a local array on the stack and you never pass
the address of elements around.

llvm-svn: 12349

llvm-svn: 12344

llvm-svn: 12336

llvm-svn: 12334

user pass is destroyed.

llvm-svn: 12332

llvm-svn: 12331

references a pointer.

llvm-svn: 12330

llvm-svn: 12325

llvm-svn: 12324

memory wasteage.

llvm-svn: 12323

llvm-svn: 12322

llvm-svn: 12321

llvm-svn: 12320

llvm-svn: 12319

llvm-svn: 12318

llvm-svn: 12317

llvm-svn: 12316

llvm-svn: 12315

llvm-svn: 12314