Setting environment for using Microsoft Visual Studio 2008 x86 tools.
OVERVIEW: llvm .bc -> .bc modular optimizer and analysis printer

USAGE: opt [options] <input bitcode file>

OPTIONS:
  -O1                                          - Optimization level 1. Similar to llvm-gcc -O1
  -O2                                          - Optimization level 2. Similar to llvm-gcc -O2
  -O3                                          - Optimization level 3. Similar to llvm-gcc -O3
  -S                                           - Write output as LLVM assembly
  -analyze                                     - Only perform analysis, no optimization
  -default-data-layout=<layout-string>         - data layout string to use if not specified by module
  -disable-inlining                            - Do not run the inliner pass
  -disable-internalize                         - Do not mark all symbols as internal
  -disable-opt                                 - Do not run any optimization passes
  -disable-simplify-libcalls                   - Disable simplify-libcalls
  -enable-correct-eh-support                   - Make the -lowerinvoke pass insert expensive, but correct, EH code
  -enable-load-pre                             - 
  -enable-objc-arc-opts                        - 
  -enable-tbaa                                 - 
  -f                                           - Enable binary output on terminals
  -funit-at-a-time                             - Enable IPO. This is same as llvm-gcc's -funit-at-a-time
  -help                                        - Display available options (-help-hidden for more)
  -internalize-public-api-file=<filename>      - A file containing list of symbol names to preserve
  -internalize-public-api-list=<list>          - A list of symbol names to preserve
  -load=<pluginfilename>                       - Load the specified plugin
  -mtriple=<string>                            - Override target triple for module
  -o=<filename>                                - Override output filename
  -p                                           - Print module after each transformation
  -print-after-all                             - Print IR after each pass
  -print-before-all                            - Print IR before each pass
  -print-breakpoints-for-testing               - Print select breakpoints location for testing
  -profile-estimator-loop-weight=<loop-weight> - Number of loop executions used for profile-estimator
  -profile-info-file=<filename>                - Profile file loaded by -profile-loader
  -profile-verifier-noassert                   - Disable assertions
  -stats                                       - Enable statistics output from program
  -std-compile-opts                            - Include the standard compile time optimizations
  -std-link-opts                               - Include the standard link time optimizations
  -strip-debug                                 - Strip debugger symbol info from translation unit
  Optimizations available:
    -aa-eval                                   - Exhaustive Alias Analysis Precision Evaluator
    -adce                                      - Aggressive Dead Code Elimination
    -always-inline                             - Inliner for always_inline functions
    -argpromotion                              - Promote 'by reference' arguments to scalars
    -asan                                      - AddressSanitizer: detects use-after-free and out-of-bounds bugs.
    -basicaa                                   - Basic Alias Analysis (stateless AA impl)
    -basiccg                                   - Basic CallGraph Construction
    -bb-vectorize                              - Basic-Block Vectorization
    -block-freq                                - Block Frequency Analysis
    -block-placement                           - Profile Guided Basic Block Placement
    -branch-prob                               - Branch Probability Analysis
    -break-crit-edges                          - Break critical edges in CFG
    -codegenprepare                            - Optimize for code generation
    -constmerge                                - Merge Duplicate Global Constants
    -constprop                                 - Simple constant propagation
    -correlated-propagation                    - Value Propagation
    -count-aa                                  - Count Alias Analysis Query Responses
    -dce                                       - Dead Code Elimination
    -deadargelim                               - Dead Argument Elimination
    -deadarghaX0r                              - Dead Argument Hacking (BUGPOINT USE ONLY; DO NOT USE)
    -debug-aa                                  - AA use debugger
    -die                                       - Dead Instruction Elimination
    -domfrontier                               - Dominance Frontier Construction
    -domtree                                   - Dominator Tree Construction
    -dot-callgraph                             - Print Call Graph to 'dot' file
    -dot-cfg                                   - Print CFG of function to 'dot' file
    -dot-cfg-only                              - Print CFG of function to 'dot' file (with no function bodies)
    -dot-dom                                   - Print dominance tree of function to 'dot' file
    -dot-dom-only                              - Print dominance tree of function to 'dot' file (with no function bodies)
    -dot-postdom                               - Print postdominance tree of function to 'dot' file
    -dot-postdom-only                          - Print postdominance tree of function to 'dot' file (with no function bodies)
    -dot-regions                               - Print regions of function to 'dot' file
    -dot-regions-only                          - Print regions of function to 'dot' file (with no function bodies)
    -dse                                       - Dead Store Elimination
    -early-cse                                 - Early CSE
    -extract-blocks                            - Extract Basic Blocks From Module (for bugpoint use)
    -functionattrs                             - Deduce function attributes
    -globaldce                                 - Dead Global Elimination
    -globalopt                                 - Global Variable Optimizer
    -globalsmodref-aa                          - Simple mod/ref analysis for globals
    -gvn                                       - Global Value Numbering
    -indvars                                   - Induction Variable Simplification
    -inline                                    - Function Integration/Inlining
    -insert-edge-profiling                     - Insert instrumentation for edge profiling
    -insert-gcov-profiling                     - Insert instrumentation for GCOV profiling
    -insert-optimal-edge-profiling             - Insert optimal instrumentation for edge profiling
    -insert-path-profiling                     - Insert instrumentation for Ball-Larus path profiling
    -instcombine                               - Combine redundant instructions
    -instcount                                 - Counts the various types of Instructions
    -instnamer                                 - Assign names to anonymous instructions
    -instsimplify                              - Remove redundant instructions
    -internalize                               - Internalize Global Symbols
    -intervals                                 - Interval Partition Construction
    -ipconstprop                               - Interprocedural constant propagation
    -ipsccp                                    - Interprocedural Sparse Conditional Constant Propagation
    -iv-users                                  - Induction Variable Users
    -jump-threading                            - Jump Threading
    -lazy-value-info                           - Lazy Value Information Analysis
    -lcssa                                     - Loop-Closed SSA Form Pass
    -lda                                       - Loop Dependence Analysis
    -libcall-aa                                - LibCall Alias Analysis
    -licm                                      - Loop Invariant Code Motion
    -lint                                      - Statically lint-checks LLVM IR
    -loop-deletion                             - Delete dead loops
    -loop-extract                              - Extract loops into new functions
    -loop-extract-single                       - Extract at most one loop into a new function
    -loop-idiom                                - Recognize loop idioms
    -loop-instsimplify                         - Simplify instructions in loops
    -loop-reduce                               - Loop Strength Reduction
    -loop-rotate                               - Rotate Loops
    -loop-simplify                             - Canonicalize natural loops
    -loop-unroll                               - Unroll loops
    -loop-unswitch                             - Unswitch loops
    -loops                                     - Natural Loop Information
    -lower-expect                              - Lower 'expect' Intrinsics
    -loweratomic                               - Lower atomic intrinsics to non-atomic form
    -lowerinvoke                               - Lower invoke and unwind, for unwindless code generators
    -lowerswitch                               - Lower SwitchInst's to branches
    -mem2reg                                   - Promote Memory to Register
    -memcpyopt                                 - MemCpy Optimization
    -memdep                                    - Memory Dependence Analysis
    -mergefunc                                 - Merge Functions
    -mergereturn                               - Unify function exit nodes
    -module-debuginfo                          - Decodes module-level debug info
    -no-aa                                     - No Alias Analysis (always returns 'may' alias)
    -no-path-profile                           - No Path Profile Information
    -no-profile                                - No Profile Information
    -objc-arc                                  - ObjC ARC optimization
    -objc-arc-aa                               - ObjC-ARC-Based Alias Analysis
    -objc-arc-apelim                           - ObjC ARC autorelease pool elimination
    -objc-arc-contract                         - ObjC ARC contraction
    -objc-arc-expand                           - ObjC ARC expansion
    -partial-inliner                           - Partial Inliner
    -path-profile-loader                       - Load path profile information from file
    -path-profile-verifier                     - Compare the path profile derived edge profile against the edge profile.
    -postdomtree                               - Post-Dominator Tree Construction
    -preverify                                 - Preliminary module verification
    -print-alias-sets                          - Alias Set Printer
    -print-callgraph                           - Print a call graph
    -print-callgraph-sccs                      - Print SCCs of the Call Graph
    -print-cfg-sccs                            - Print SCCs of each function CFG
    -print-dbginfo                             - Print debug info in human readable form
    -print-dom-info                            - Dominator Info Printer
    -print-externalfnconstants                 - Print external fn callsites passed constants
    -print-function                            - Print function to stderr
    -print-memdeps                             - Print MemDeps of function
    -print-module                              - Print module to stderr
    -print-used-types                          - Find Used Types
    -profile-estimator                         - Estimate profiling information
    -profile-loader                            - Load profile information from llvmprof.out
    -profile-verifier                          - Verify profiling information
    -prune-eh                                  - Remove unused exception handling info
    -reassociate                               - Reassociate expressions
    -reg2mem                                   - Demote all values to stack slots
    -regions                                   - Detect single entry single exit regions
    -scalar-evolution                          - Scalar Evolution Analysis
    -scalarrepl                                - Scalar Replacement of Aggregates (DT)
    -scalarrepl-ssa                            - Scalar Replacement of Aggregates (SSAUp)
    -sccp                                      - Sparse Conditional Constant Propagation
    -scev-aa                                   - ScalarEvolution-based Alias Analysis
    -simplify-libcalls                         - Simplify well-known library calls
    -simplifycfg                               - Simplify the CFG
    -sink                                      - Code sinking
    -strip                                     - Strip all symbols from a module
    -strip-dead-debug-info                     - Strip debug info for unused symbols
    -strip-dead-prototypes                     - Strip Unused Function Prototypes
    -strip-debug-declare                       - Strip all llvm.dbg.declare intrinsics
    -strip-nondebug                            - Strip all symbols, except dbg symbols, from a module
    -tailcallelim                              - Tail Call Elimination
    -targetdata                                - Target Data Layout
    -targetlibinfo                             - Target Library Information
    -tbaa                                      - Type-Based Alias Analysis
    -tsan                                      - ThreadSanitizer: detects data races.
    -verify                                    - Module Verifier
    -view-cfg                                  - View CFG of function
    -view-cfg-only                             - View CFG of function (with no function bodies)
    -view-dom                                  - View dominance tree of function
    -view-dom-only                             - View dominance tree of function (with no function bodies)
    -view-postdom                              - View postdominance tree of function
    -view-postdom-only                         - View postdominance tree of function (with no function bodies)
    -view-regions                              - View regions of function
    -view-regions-only                         - View regions of function (with no function bodies)
  -time-passes                                 - Time each pass, printing elapsed time for each on exit
  -vectorize                                   - Run vectorization passes
  -verify-dom-info                             - Verify dominator info (time consuming)
  -verify-each                                 - Verify after each transform
  -verify-loop-info                            - Verify loop info (time consuming)
  -verify-region-info                          - Verify region info (time consuming)
  -version                                     - Display the version of this program