Do not mark no-return calls tail calls. It'll screw up special calls like longjmp and it doesn't make much sense for performance reason. If my logic is faulty, please let me know.

llvm-svn: 94937

unconditionally.  Besides checking the offset, also check that the underlying
object is aligned as much as the load itself.

llvm-svn: 94875

llvm-svn: 86403

things. Back out part of r86349 for a moment.

llvm-svn: 86353

and add a .ll to demo the new capability.

llvm-svn: 86349

llvm-svn: 80766

llvm-svn: 78948

when it allows forming a tail call.  Patch by Frits van
Bommel.  This implements PR4323.

llvm-svn: 73752

the optimizers about this.  For example, a readonly
function with no uses cannot be removed unless it is
also marked nounwind.

llvm-svn: 71071

llvm-svn: 55779

llvm-svn: 52267

Fix a bunch of 80col violations that arose from the Create API change. Tweak makefile targets to find these better.

llvm-svn: 51143

several things that were neither in an anonymous namespace nor static
but not intended to be global.

llvm-svn: 51017

Specifically, introduction of XXX::Create methods
for Users that have a potentially variable number of
Uses.

llvm-svn: 49277

Right now, the pass does not optimize tail recursions 
involving multiple return values.

llvm-svn: 48228

llvm-svn: 47371

llvm-svn: 45418

llvm-svn: 41804

llvm-svn: 36873

llvm-svn: 36662

Due to darwin gcc bug, one version of darwin linker coalesces
static const int, which defauts PassID based pass identification.

llvm-svn: 36652

llvm-svn: 36632

llvm-svn: 35265

llvm-svn: 34176

the Transforms library. This reduces debug library size by 132 KB, debug
binary size by 376 KB, and reduces link time for llvm tools slightly.

llvm-svn: 33939

converted, we lose a static initializer.  This also allows GCC to emit warnings
about unused statistics.

llvm-svn: 32690

is 'unsigned'.

llvm-svn: 32279

Turn on -Wunused and -Wno-unused-parameter. Clean up most of the resulting
fall out by removing unused variables. Remaining warnings have to do with
unused functions (I didn't want to delete code without review) and unused
variables in generated code. Maintainers should clean up the remaining
issues when they see them. All changes pass DejaGnu tests and Olden.

llvm-svn: 31380

transformation.  This speeds up a C++ app 2.25x.

llvm-svn: 31113

llvm-svn: 29925

that has been sitting in my inbox since May 18. :)

llvm-svn: 24194

easier to understand?  :)

llvm-svn: 22706

llvm-svn: 22692

* Teach this code to move allocas out of the loop when tail call eliminating
  a call marked 'tail'.  This implements TailCallElim/move_alloca_for_tail_call.ll
* Do not perform this transformation if a call is marked 'tail' and if there
  are allocas that we cannot move out of the loop in #2.  Doing so would increase
  the stack usage of the function.  This implements fixes
  PR615 and TailCallElim/dont-tce-tail-marked-call.ll.

llvm-svn: 22690

llvm-svn: 22523

suitable for tail calls.

llvm-svn: 21836

llvm-svn: 21427

using Function::arg_{iterator|begin|end}.  Likewise Module::g* -> Module::global_*.

This patch is contributed by Gabor Greif, thanks!

llvm-svn: 20597

Move include/Config and include/Support into include/llvm/Config,
include/llvm/ADT and include/llvm/Support. From here on out, all LLVM
public header files must be under include/llvm/.

llvm-svn: 16137

llvm-svn: 11114