llvm-svn: 47367

llvm-svn: 47364

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

llvm-svn: 47342

llvm-svn: 47323

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

requested by Chris.  While there, do the same
for an existing function committed by someone
called "lattner" :)

llvm-svn: 47273

Add support to GVN for performing sret return slot optimization.  This means that, if an sret function tail calls
another sret function, it should pass its own sret parameter to the tail callee, allowing it to fill in the correct
return value.  llvm-gcc does not emit this by default.  Instead, it allocates space in the caller for the sret of
the tail call and then uses memcpy to copy the result into the caller's sret parameter.  This optimization detects
and optimizes that case.

llvm-svn: 47265

this speeds it up 2.3% on eon.

llvm-svn: 47261

llvm-svn: 47258

llvm-svn: 47251

the second half of PR2047

llvm-svn: 47244

llvm-svn: 47242

that is also a subtract.  This implements PR2047 and Transforms/Reassociate/subtest2.ll 

llvm-svn: 47241

functionality change.

llvm-svn: 47239

is not passed as an argument to a trampoline intrinsic.

llvm-svn: 47220

llvm-svn: 47150

Fixes PR 2030.

llvm-svn: 47141

llvm-svn: 47129

llvm-svn: 47116

llvm-svn: 47111

llvm-svn: 47093

actually does.

llvm-svn: 47090

llvm-svn: 47089

llvm-svn: 47082

llvm-svn: 47066

bugs fixed.  This now passes PPC bootstrap.

llvm-svn: 47026

checks for a malloc/alloca immediately followed by a load.

llvm-svn: 47006