in two places that are really interested in simplified instructions, not
constants.

llvm-svn: 120044

Get rid of static constructors for pass registration.  Instead, every pass exposes an initializeMyPassFunction(), which
must be called in the pass's constructor.  This function uses static dependency declarations to recursively initialize
the pass's dependencies.

Clients that only create passes through the createFooPass() APIs will require no changes.  Clients that want to use the
CommandLine options for passes will need to manually call the appropriate initialization functions in PassInitialization.h
before parsing commandline arguments.

I have tested this with all standard configurations of clang and llvm-gcc on Darwin.  It is possible that there are problems
with the static dependencies that will only be visible with non-standard options.  If you encounter any crash in pass
registration/creation, please send the testcase to me directly.

llvm-svn: 116820

llvm-svn: 115996

llvm-svn: 110460

llvm-svn: 110410

ID member as the sole unique type identifier.  Clean up APIs related to this change.

llvm-svn: 110396

llvm-svn: 109045

llvm-svn: 108137

llvm-svn: 108135

llvm-svn: 108131

llvm-svn: 92620

from various APIs, addressing PR5325.

llvm-svn: 86231

Remove AllocationInst.  Since MallocInst went away, AllocaInst is the only subclass of AllocationInst, so it no longer is necessary.

llvm-svn: 84969

llvm-svn: 82929

update all the callers.

llvm-svn: 82889

Reviewed by Dan Gohman.

llvm-svn: 82300

llvm-svn: 80766

This required converting a bunch of stuff off DOUT and other cleanups.

llvm-svn: 79819

llvm-svn: 77716

 - Some clients which used DOUT have moved to DEBUG. We are deprecating the
   "magic" DOUT behavior which avoided calling printing functions when the
   statement was disabled. In addition to being unnecessary magic, it had the
   downside of leaving code in -Asserts builds, and of hiding potentially
   unnecessary computations.

llvm-svn: 77019

llvm-svn: 76702

isSafeToSpeculativelyExecute. The new method is a bit closer to what 
the callers actually care about in that it rejects more things callers 
don't want.  It also adds more precise handling for integer 
division, and unifies code for analyzing the legality of a speculative 
load.

llvm-svn: 76150

llvm-svn: 75863

llvm-svn: 75703

This started as a small change, I swear.  Unfortunately, lots of things call the [I|F]CmpInst constructors.  Who knew!?

llvm-svn: 75200

llvm-svn: 74844

a key is present in a std::map or DenseMap to use find instead.

llvm-svn: 74676

the optimizers about this.  For example, a readonly
function with no uses cannot be removed unless it is
also marked nounwind.

llvm-svn: 71071

llvm-svn: 60190

llvm-svn: 55779

llvm-svn: 52243

Avoid duplicating loop header which leads to unnatural loops (and just seem like general badness to me, likely to cause code explosion).
Patch by Florian Brandner.

llvm-svn: 52223

use it instead of duplicating its functionality.

llvm-svn: 51499

llvm-svn: 51183

Patch by Matthijs Kooijman.

llvm-svn: 51154

llvm-svn: 51063

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

llvm-svn: 51017

a call to Instruction::isUsedOutsideOfBlock.

llvm-svn: 50005

llvm-svn: 49657

which is significantly more efficient.

llvm-svn: 49614