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

llvm-svn: 48228

llvm-svn: 48227

llvm-svn: 48210

llvm-svn: 48109

llvm-svn: 48106

and also update the cloning interface's major user, the loop optimizations.

llvm-svn: 48088

llvm-svn: 48047

under modulo (overflow). Fixes PR1933.

llvm-svn: 47987

a union containing a vector and an array whose elements were smaller than
the vector elements.  this means we need to compile the load of the 
array elements into an extract element plus a truncate.

llvm-svn: 47752

functionality change.

llvm-svn: 47751

llvm-svn: 47750

in an invalid transformation.

llvm-svn: 47639

llvm-svn: 47615

try to simplify them.

llvm-svn: 47610

llvm-svn: 47599

operands into inline asm block.

llvm-svn: 47589

not safe.  This is fixed by more aggressively checking that the return slot is
not used elsewhere in the function.

llvm-svn: 47544

Fix an issue where GVN would try to use an instruction before its definition when performing return slot optimization.

llvm-svn: 47541

stuff into ParamAttrsList.h.  Per feedback from
ParamAttrs changes.

llvm-svn: 47504

llvm-svn: 47478

llvm-svn: 47382

llvm-svn: 47375

llvm-svn: 47371

llvm-svn: 47367

llvm-svn: 47364

for adding alignment info, not there yet).  Clean up
interfaces to reference ParameterAttributes consistently.

llvm-svn: 47342

could work don't work fully.  This fixes PR1705.  Oh yeah, we don't have
packed types anymore either ;-)

llvm-svn: 47322

Refactor this method a bit, and correct a test that was completely wrong but happened to work out anyways. :-)

llvm-svn: 47321

llvm-svn: 47320

llvm-svn: 47319

llvm-svn: 47318

and add some others that should have been in from the first place.  Document the whole thing better.

llvm-svn: 47315

can be a SNaN.  We could be more aggressive and turn this into 
unreachable, but that is less nice, and not really worth it.

llvm-svn: 47313

At some point in the future, this check will become smarter.

llvm-svn: 47310

over all the parameters of the callee looking for it.

llvm-svn: 47309

to apply to a memcpy into processInstruction.  Also, fix a bug in the check due to
missing braces.

llvm-svn: 47307

Fix Transforms/GVN/memcpy.ll, which Chris broke in r47275 by reordering the branches.  memcpy's are a kind of CallInst.

llvm-svn: 47305

llvm-svn: 47287

to Dale for noticing this!

llvm-svn: 47276

llvm-svn: 47275