this list (except use_size()) are constant time.  Before the killUse method
(used whenever something stopped using a value) was linear time, and thus
very very slow for large programs.

This speeds GCCAS up _substantially_ on large programs: almost 2x for 176.gcc:

176.gcc:     77.07s -> 37.38s
177.mesa:     7.59s ->  5.57s
252.eon:     21.02s -> 19.52s (*)
253.perlbmk: 11.40s -> 13.05s
254.gap:      7.25s -> 7.42s

252.eon would speed up a whole lot more, but optimization time is being
dominated by the inlining pass, which needs to be fixed.

llvm-svn: 9159

llvm-svn: 9158

llvm-svn: 9156

Rewrite code to work with use_lists what are either random access or bidirectional

llvm-svn: 9155

llvm-svn: 9154

I dislike having to examine the output of "dis" to see what symbols
are in a bytecode file. So, here is a first cut at a "nm" utility for llvm.
Flame away.... :-)

llvm-svn: 9153

llvm-svn: 9152

Fixed the header comment in Makefile.rules
Changed all references to the echo program in Makefile.rules to the value
found by autoconf.

llvm-svn: 9151

llvm-svn: 9150

This should make setting up a new project much easier.

llvm-svn: 9149

llvm-svn: 9148

llvm-svn: 9147

llvm-svn: 9146

llvm-svn: 9145

llvm-svn: 9144

llvm-svn: 9142

llvm-svn: 9141

left on the side of the road without a second thought.

It is preventing forward progress, so for now, we will disable it by default.

llvm-svn: 9140

llvm-svn: 9139

llvm-svn: 9138

llvm-svn: 9136

llvm-svn: 9135

llvm-svn: 9134

llvm-svn: 9133

llvm-svn: 9132

llvm-svn: 9131

Other adjustments to work with the new ToolRunner interfaces

llvm-svn: 9130

llvm-svn: 9129

llvm-svn: 9128

* Use the incremental bytecode reader interface to speed up execution

llvm-svn: 9127

* FunctionPassManager ctor now takes in a ModuleProvider
* run() materializes function before running passes on it

llvm-svn: 9126

* The VM is now constructed with a ModuleProvider

llvm-svn: 9125

* ExecutionEngine and VM can be constructed using a ModuleProvider.

llvm-svn: 9124

* ExecutionEngine can be constructed from a ModuleProvider
* Alphabetized order of forward-declared classes

llvm-svn: 9123

* Add ModuleProvider as a parameter to FunctionPassManager

llvm-svn: 9122

 * Add header comment
 * Remove extraneous #includes
 * Move the FileType enum into the GCC class
 * The GCC class is not virtual.
 * Move all of the "constructor" functions into the classes themselves
 * Stop using cl::list as arguments, use std::vector instead (which cl::list
   derives from)
 * Improve comments

llvm-svn: 9121

object's name instead

llvm-svn: 9120

llvm-svn: 9119

llvm-svn: 9118

llvm-svn: 9117