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

Testcases :
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070507/049451.html
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070507/049452.html

llvm-svn: 36955

llvm-svn: 36662

Due to darwin gcc bug, one version of darwin linker coalesces
static const int, which defauts PassID based pass identification.

llvm-svn: 36652

llvm-svn: 36632

llvm-svn: 34992

llvm-svn: 34859

llvm-svn: 34640

llvm-svn: 34638

the Transforms library. This reduces debug library size by 132 KB, debug
binary size by 376 KB, and reduces link time for llvm tools slightly.

llvm-svn: 33939

speeds up the inliner 16%.

llvm-svn: 33801

llvm-svn: 33680

This is the final patch for this PR. It implements some minor cleanup
in the use of IntegerType, to wit:
1. Type::getIntegerTypeMask -> IntegerType::getBitMask
2. Type::Int*Ty changed to IntegerType* from Type*
3. ConstantInt::getType() returns IntegerType* now, not Type*

This also fixes PR1120.

Patch by Sheng Zhou.

llvm-svn: 33370

llvm-svn: 33164

recommended that getBoolValue be replaced with getZExtValue and that
get(bool) be replaced by get(const Type*, uint64_t). This implements
those changes.

llvm-svn: 33110