Don't crash when we encounter one of these.

llvm-svn: 51915

address of the PassInfo directly instead of calling getPassInfo.
This eliminates a bunch of dynamic initializations of static data.

Also, fold RegisterPassBase into PassInfo, make a bunch of its
data members const, and rearrange some code to initialize data
members in constructors instead of using setter member functions.

llvm-svn: 51022

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

llvm-svn: 51017

llvm-svn: 50014

llvm-svn: 49838

wee problem in Xcode 2.[45]/gcc 4.0.1.

llvm-svn: 49831

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

llvm-svn: 49277

llvm-svn: 45418

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

llvm-svn: 44348

llvm-svn: 41051

llvm-svn: 37506

This adds redundancy for now.

llvm-svn: 37492

llvm-svn: 37415

llvm-svn: 37407

llvm-svn: 37403

llvm-svn: 36873

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: 36205

Remove ImmediateDominator analysis.  The same information can be obtained from DomTree.  A lot of code for
constructing ImmediateDominator is now folded into DomTree construction.

This is part of the ongoing work for PR217.

llvm-svn: 36063

llvm-svn: 35729

work for PR 1171.

llvm-svn: 35728

llvm-svn: 33210

more careful about unreachable code when updating dominator info.

llvm-svn: 33204

delete some dead ones.

llvm-svn: 32694

is 'unsigned'.

llvm-svn: 32279

llvm-svn: 31258

llvm-svn: 31256

ever is, we want to get an assert instead of silent bad codegen.

llvm-svn: 30716

The critical edge block dominates the dest block if the destblock dominates
all edges other than the one incoming from the critical edge.

llvm-svn: 30696

llvm-svn: 29925

llvm-svn: 29911

dropped.  This shrinks libllvmgcc.dylib another 67K

llvm-svn: 28975

llvm-svn: 25203

a problem in LoopStrengthReduction, where it would split critical edges
then confused itself with outdated loop information.

llvm-svn: 22776

Instead, just update the BB in-place.  This is both faster, and it prevents
split-critical-edges from shuffling the PHI argument list unneccesarily.

llvm-svn: 22765

llvm-svn: 21427

Bill Wendling!!

llvm-svn: 20649

Patch contributed by Paolo Invernizzi. Thanks Paolo!

llvm-svn: 16368