llvm-svn: 53006

Keep track of currentLoop.

llvm-svn: 53005

llvm-svn: 52438

llvm-svn: 51887

use it instead of duplicating its functionality.

llvm-svn: 51499

several things that were neither in an anonymous namespace nor static
but not intended to be global.

llvm-svn: 51017

llvm-svn: 50696

r48047 r48084 r48085 r48086 r48088 r48096 r48099 r48109 and r48123.

llvm-svn: 50265

llvm-svn: 50016

Specifically, introduction of XXX::Create methods
for Users that have a potentially variable number of
Uses.

llvm-svn: 49277

and also update the cloning interface's major user, the loop optimizations.

llvm-svn: 48088

llvm-svn: 45418

Get rid of annoying spaces.

llvm-svn: 45100

Make LoopInfoBase more generic, in preparation for having MachineLoopInfo.  This involves a small interface change.

llvm-svn: 44348

Do not walk invalid iterator.

llvm-svn: 42812

unswitch when frontier includes basic blocks that 
are not inside loop.

llvm-svn: 42654

llvm-svn: 42591

llvm-svn: 42590

llvm-svn: 42180

llvm-svn: 41207

Fix GLIBCXX_DEBUG error triggered by incrementing erased iterator.

llvm-svn: 40897

gvn, gvnpre, dse, and predsimplify.  To see these, use:

  make check-line-length

llvm-svn: 40738

exit edge to preserve LCSSA.

Fix dominance frontier update during loop unswitch. This fixes PR 1589, again

llvm-svn: 40737

llvm-svn: 40698

exit edge to preserve LCSSA.

Fix dominance frontier update during loop unswitch. This fixes PR 1589.

llvm-svn: 40695

llvm-svn: 40673

Use simple analysis interface to preserve analysis info maintained by other loop passes.

llvm-svn: 40627

llvm-svn: 40609

llvm-svn: 40606

This commit fixes two things.  One is a pair of VStudio compiler errors stemming from variables
which defined within the for loop statement and also within the body of the for loop.  I fixed these 
by renaming one of the two variables.  Additionally, I've made the Function*->ExFunc map in 
ExternalFunctions.cpp a ManagedStatic object, so that cleanup will be done on llvm_shutdown.  In repeated
uses of the interpreter, where the same Function* address may get used for completely differnet functions,
this was causing a crash.

llvm-svn: 40558

llvm-svn: 40025

This fixes PR1559.

llvm-svn: 40024

llvm-svn: 39834

llvm-svn: 37955

llvm-svn: 37820

llvm-svn: 37792

loop.
- Avoid loop unswich for loop header branch.
- While cloning dominators fix typo and handle self dominating blocks.

llvm-svn: 37772

llvm-svn: 37771

to loop unswitch candidate for the loop.

llvm-svn: 37770

llvm-svn: 37446