llvm-svn: 21534

strcat when its called.

llvm-svn: 21533

llvm-svn: 21532

* Fix comments at top of file
* Change algorithm for running the call optimizations from n*n to something
  closer to n.
* Use a hash_map to store and lookup the optimizations since there will
  eventually (or potentially) be a large number of them. This gets lookup
  based on the name of the function to O(1). Each CallOptimizer now has a
  std::string member named func_name that tracks the name of the function
  that it applies to. It is this string that is entered into the hash_map
  for fast comparison against the function names encountered in the module.
* Cleanup some style issues pertaining to iterator invalidation
* Don't pass the Function pointer to the OptimizeCall function because if
  the optimization needs it, it can get it from the CallInst passed in.
* Add the skeleton for a new CallOptimizer, StrCatOptimizer which will
  eventually replace strcat's of constant strings with direct copies.

llvm-svn: 21526

llvm-dis output don't go blind.

llvm-svn: 21525

destructor. Just add the do-nothing virtual destructor.

llvm-svn: 21524

llvm-svn: 21523

calls. The pass visits all external functions in the module and determines
if such function calls can be optimized. The optimizations are specific to
the library calls involved. This initial version only optimizes calls to
exit(3) when they occur in main(): it changes them to ret instructions.

llvm-svn: 21522

llvm-svn: 21521

so we put the destructor in Pass.cpp and make it non-inline.

llvm-svn: 21520

llvm-svn: 21515

instruction is added to the original block, not the new block.

llvm-svn: 21513

destructor.

llvm-svn: 21510

don't have virtual destructors.

llvm-svn: 21507

grammar rules for the English language.

llvm-svn: 21503

llvm-svn: 21501

llvm-svn: 21500

regardless of the tab size/stop settings on the developer side

llvm-svn: 21499

llvm-svn: 21498

llvm-svn: 21497

llvm-svn: 21496

llvm-svn: 21495

llvm-svn: 21494

const_cast instead of c casts.

llvm-svn: 21493

llvm-svn: 21492

Completely rework the 'setcc (cast x to larger), y' code.  This code has
the advantage of implementing setcc.ll:test19 (being more general than
the previous code) and being correct in all cases.

This allows us to unxfail 2004-11-27-SetCCForCastLargerAndConstant.ll,
and close PR454.

llvm-svn: 21491

llvm-svn: 21490

llvm-svn: 21489

* ... but it wasn't so busy as to not smell the roses and doxygenify comments

llvm-svn: 21487

llvm-svn: 21486

llvm-svn: 21485

llvm-svn: 21484

llvm-svn: 21483

llvm-svn: 21482

llvm-svn: 21481

llvm-svn: 21480

llvm-svn: 21479

a crash of the sfv on 188.ammp

llvm-svn: 21478

llvm-svn: 21475

USEDLIB as the variable to which "CBackend" is appended. The surrounding
if clause is safe because currently the configure script ensures that the
CBackend target is always added to TARGETS_TO_BUILD. By using a non-hard
coded construct in the makefile, we gain uniformity and the ability to
change the default set of targets by only changing the configure script.

llvm-svn: 21474