Will reapply with a fix when I get a chance.

llvm-svn: 91486

in local register allocator.  If a reg-reg copy has a phys reg
input and a virt reg output, and this is the last use of the phys
reg, assign the phys reg to the virt reg.  If a reg-reg copy has
a phys reg output and we need to reload its spilled input, reload
it directly into the phys reg than passing it through another reg.

Following 76208, there is sometimes no dependency between the def of
a phys reg and its use; this creates a window where that phys reg
can be used for spilling (this is true in linear scan also).  This
is bad and needs to be fixed a better way, although 76208 works too
well in practice to be reverted.  However, there should normally be
no spilling within inline asm blocks.  The patch here goes a long way
towards making this actually be true.

llvm-svn: 91485

llvm-svn: 91481

enclosing namespace.  Caught by clang++.

llvm-svn: 91480

llvm-svn: 91479

llvm-svn: 91477

llvm-svn: 91475

using objective-c property. (fixes radar 7449707)

llvm-svn: 91474

Remove ValueManager::getRegionValueSymbolValOrUnknown().  It was just extra veneer on top of getRegionValueSymbolVal().

llvm-svn: 91471

remove start/finishGVStub and the BufferState helper class from the
MachineCodeEmitter interface.  It has the side-effect of not setting the
indirect global writable and then executable on ARM, but that shouldn't be
necessary.

llvm-svn: 91464

llvm-svn: 91463

This test courtesy of LLVM.

llvm-svn: 91462

clang ' or ' clang -cc1 ' or ' clang-cc ' in test lines (by substituting them to
garbage).

llvm-svn: 91460

found last time.  Instead of trying to modify the IR while iterating over it,
I've change it to keep a list of WeakVH references to dead instructions, and
then delete those instructions later.  I also added some special case code to
detect and handle the situation when both operands of a memcpy intrinsic are
referencing the same alloca.

llvm-svn: 91459

llvm-svn: 91458

non-existing 'isa' field of a non-existing struct type
all related to legacy type definition for 'id' which we have
dropped in clang in favor of a built-in type.
(fixes radar 7470820).

llvm-svn: 91455

llvm-svn: 91450

on PR5610 (2.185 -> 2.130s).  The big issue is that this is making
insanely huge macro argument lists with over a million tokens in it.
The reason that mallco and free are so expensive is that we are 
actually going to the kernel to get it, and switching to a bump 
pointer allocator won't change this in an interesting way.

llvm-svn: 91449

llvm-svn: 91448

 - This is designed to make it obvious that %clang_cc1 is a "test variable"
   which is substituted. It is '%clang_cc1' instead of '%clang -cc1' because it
   can be useful to redefine what gets run as 'clang -cc1' (for example, to set
   a default target).

llvm-svn: 91446

real data, not metadata) and fix DbgInfoPrinter to not abuse
GetConstantStringInfo.

llvm-svn: 91444

llvm-svn: 91442

llvm-svn: 91440

If a ParmVarDecl's default argument is a CXXExprWithTemporaries, return the underlying expr instead. Add getNumDefaultArgTemporaries and getDefaultArgTemporary which returns the temporaries a default arg creates.

llvm-svn: 91439

llvm-svn: 91438

For hi/odd of an odd-length vector, the last component is undefined.  Since
we shuffle with an undef vector, no CodeGen needs to change to support this.

llvm-svn: 91437

Patch by Chip Davis.

llvm-svn: 91436

and some clean up and a block rewriter test.

llvm-svn: 91435

llvm-svn: 91434

llvm-svn: 91433

llvm-svn: 91432

llvm-svn: 91431

llvm-svn: 91430

llvm-svn: 91429

llvm-svn: 91428

1. Use std::equal instead of reinventing it.
2. don't run dtors in destroy_range if element is pod-like.
3. Use isPodLike to decide between memcpy/uninitialized_copy 
   instead of is_class.  isPodLike is more generous in some cases.

llvm-svn: 91427

up into the non-templated SmallVectorBase class.

llvm-svn: 91426

llvm-svn: 91425

want some clients of QualType to think it's a pod and some to 
not know it is.

llvm-svn: 91424

llvm-svn: 91423