llvm-svn: 52420

llvm-svn: 52419

Patch by Gary Benson!

llvm-svn: 52418

llvm-svn: 52415

llvm-svn: 52414

Spotted by Nick Lewycky.

llvm-svn: 52411

rather than bundling them together.  Rename FloatToInt
to PromoteFloat (better, if not perfect).  Reorganize
files by types rather than by operations.

llvm-svn: 52408

speaking these are not constant values. However, when a function always returns
one of its arguments, then from the point of view of each caller the return
value is constant (or at least a known value) and can be replaced.

llvm-svn: 52397

individually.

Also learn IPConstProp how returning first class aggregates work, in addition
to old style multiple return instructions.

Modify the return-constants testscase to confirm this behaviour.

llvm-svn: 52396

properly.

llvm-svn: 52390

of value info (sign/zero ext info) from one MBB to another.  This doesn't
handle much right now because of two limitations:

1) only handles zext/sext, not random bit propagation (no assert exists 
   for this)
2) doesn't handle phis.

llvm-svn: 52383

llvm-svn: 52381

Rather than avoiding to wrap ISD::DECLARE GV operand in X86ISD::Wrapper, simply handle it at dagisel time with x86 specific isel code.

llvm-svn: 52377

llvm-svn: 52374

llvm-svn: 52373

when changing the stride of a comparison so that it's slightly
more precise, by having it scan the instruction list to determine
if there is a use of the condition after the point where the
condition will be inserted.

llvm-svn: 52371

this speeds up the linking testcase in PR1860 by 44% (.379 -> 0.263)

llvm-svn: 52365

llvm-svn: 52364

llvm-svn: 52363

llvm-svn: 52361

a vector with a linear search.  This speeds up the linking testcase 
in PR1860 from 0.965s to 0.385s on my system.

llvm-svn: 52357

llvm-svn: 52352

llvm-svn: 52351

llvm-svn: 52350

the testcases in PR1860 from taking more than 1 hour (when I killed it)
to taking 1s.

llvm-svn: 52347

llvm-svn: 52345

llvm-svn: 52341

client that cares and simplifying its control flow.

Remove the DestST argument to ResolveTypes and RecursiveResolveTypes*
which are dead now.

llvm-svn: 52340

llvm-svn: 52339

ResolveTypes into the one place that needs it.

llvm-svn: 52338

a JIT client to completely control symbol lookup with the LazyFunctionCreator
interface.

llvm-svn: 52335

Patch by Gary Benson!

llvm-svn: 52332

impact on code quality or compile time.

llvm-svn: 52329

inserting extractvalues. In particular, this prevents the insertion of
extractvalues that can't be folded away later. Also add an example of when this
stuff is needed.

llvm-svn: 52328

Make the InsertBefore argument to FindInsertedValue optional, so you can find an inserted value without modifying the code.

llvm-svn: 52319

llvm-svn: 52318

llvm-svn: 52316

I'm at it, rename it to FindInsertedValue.

The only functional change is that newly created instructions are no longer
added to instcombine's worklist, but that is not really necessary anyway (and
I'll commit some improvements next that will completely remove the need).

llvm-svn: 52315

llvm-svn: 52312

still excluding types like i1 (not byte sized)
and i120 (loading an i120 requires loading an i64,
an i32, an i16 and an i8, which is expensive). 

llvm-svn: 52310