llvm-svn: 13385

This is intended to address Bug 40.

llvm-svn: 13358

llvm-svn: 13132

llvm-svn: 13109

llvm-svn: 13097

wrapper idea uniformly: we can use Value::replaceAllUsesWith() instead of
special-casing by class of user.

llvm-svn: 13063

* Wrap a long line

llvm-svn: 13061

by creating an internal wrapper function with same signature as the external
function, and use it instead of the "real" function.

The wrapper then calls the external function using the same JIT function
resolution API that has been used before for rewriting instructions, since the
wrapper has an explicit call instruction which we can rewrite.

llvm-svn: 13054

generator bug if multiple loops are extracted from a function.

llvm-svn: 12847

llvm-svn: 12797

llvm-svn: 12701

code.  This "instantly" gives us loop-extractor power to assist with the
debugment of our nasty codegen issues.  :)

llvm-svn: 12678

llvm-svn: 12677

llvm-svn: 12676

llvm-svn: 12675

llvm-svn: 12671

llvm-svn: 12655

llvm-svn: 12612

llvm-svn: 12606

  1. Each time the loop extractor extracted a loop, we would leak a module.
  2. When we extracted a loop, we didn't add the new function to the list of
     miscompiled functions.  Thus if the bug was in a loop nest and we
     extracted it, we could actually *LOSE THE BUG*, which is very bad.

With these patches, bugpoint has successfully found a bug for me in a function
with several nested loops, and cut it down to just one of them. :) :)

llvm-svn: 12605

hacking on programs with two functions that have the same name.

llvm-svn: 12604

around

llvm-svn: 12603

to avoid dangling references.

llvm-svn: 12470

accomplished something when it really did not.  This does not fix the bigger problem tho.

llvm-svn: 12469

llvm-svn: 12468

llvm-svn: 12426

miscompiled, try to use the loop extractor to reduce the program down to a
loop nest that is being miscompiled.  In practice, the loop extractor appears
to have too many bugs for this to be useful, but hopefully they will be fixed
soon...

llvm-svn: 12398

llvm-svn: 12397

llvm-svn: 12396

llvm-svn: 12395

llvm-svn: 12394

 * Make several methods of bugdriver global functions (ParseInputFile, PrintFunctionList)
 * Make PrintFunctionList truncate the output after 10 entries, like the crash debugger
   did.  This allows code sharing.
 * Add a couple of methods to BugDriver that allows us to eliminate some friends
 * Improve comments in ExtractFunction.cpp
 * Make classes that used to be friends up bugdriver now live in anon namespaces
 * Rip a bunch of functionality in the miscompilation tester into a new
   TestMergedProgram function for future code sharing.
 * Fix a bug in the miscompilation tester induced in my last checkin

llvm-svn: 12393

llvm-svn: 12391

llvm-svn: 12388

code duplication.  Also, don't use ReduceMiscompilingFunctions::TestFuncs
to print out the final message.

llvm-svn: 12387

Also remove an option to disable adce :)

llvm-svn: 12359

print out the name of the function being used.

llvm-svn: 12347

we can get.

llvm-svn: 11653

very helpful.  Let bugpoint favor being helpful instead of determined.

llvm-svn: 11652

llvm-svn: 11651