This speeds up live variables a lot, from .60/.39s -> .47/.26s in LLC, for
the first/second pass respectively.

llvm-svn: 11216

from physical registers, and they are always dense, it makes sense to not have
a ton of RBtree overhead.  This change speeds up regalloclocal about ~30% on
253.perlbmk, from .35s -> .27s in the JIT (in LLC, it goes from .74 -> .55).

Now live variable analysis is the slowest codegen pass.  Of course it doesn't
help that we have to run it twice, because regalloclocal doesn't update it,
but even if it did it would be the slowest pass (now it's just the 2x slowest
pass :(

llvm-svn: 11215

 1. The "work" was not in the assert, so it was punishing the optimized release
 2. getNamedFunction is _very_ expensive in large programs.  It is not designed
    to be used like this, and was taking 7% of the execution time of the code
    generator on perlbmk.

Since the assert "can never fail", I'm just killing it.

llvm-svn: 11214

strip it off.

llvm-svn: 11213

Have I ever mentioned how much I _hate_ constantpointerrefs?

llvm-svn: 11212

llvm-svn: 11210

regression, but that will definitely be fixed by 1.2

llvm-svn: 11209

even if it is wierd in some way.

llvm-svn: 11207

llvm-svn: 11206

llvm-svn: 11205

allow 'except' instead of 'unwind' here though.

llvm-svn: 11203

llvm-svn: 11202

llvm-svn: 11201

llvm-svn: 11200

llvm-svn: 11199

llvm-svn: 11198

This fixed PR16 "[lowerinvoke] The -lowerinvoke pass does not insert calls to setjmp/longjmp"

llvm-svn: 11195

llvm-svn: 11192

emitGlobals

llvm-svn: 11191

llvm-svn: 11190

llvm-svn: 11189

llvm-svn: 11188

llvm-svn: 11187

llvm-svn: 11186

llvm-svn: 11185

This causes the JIT, or LLC'd program to print out a nice message, explaining
WHY the program aborted.

llvm-svn: 11184

I don't know why its indentation has been bugging me, but it has.

llvm-svn: 11180

llvm-svn: 11179

removeDeadNodes is called, only call it at the end of the pass being run.
This saves 1.3 seconds running DSA on 177.mesa (5.3->4.0s), which is
pretty big.  This is only possible because of the automatic garbage
collection done on forwarding nodes.

llvm-svn: 11178

llvm-svn: 11177

llvm-svn: 11176

DSGraphs while they are forwarding.  When the last reference to the forwarding
node is dropped, the forwarding node is autodeleted.  This should simplify
removeTriviallyDead nodes, and is only (efficiently) possible because we are
using an ilist of dsnodes now.

llvm-svn: 11175

G == 0

llvm-svn: 11174

llvm-svn: 11173

quite the same as for non-intrusive lists of pointers to nodes.  To support
transitioning code bases, add a new 'compatibility' iterator.

llvm-svn: 11172

llvm-svn: 11171

llvm-svn: 11170

llvm-svn: 11169

Rename stats from dsnode -> dsa
Add a new stat

llvm-svn: 11167

llvm-svn: 11166