- EmitStmt is no longer required to finish with a current insertion
   point defined (i.e. it does not need to make dummy
   blocks). Instead, it can clear the insertion point in the builder
   which indicates that the current insertion point is unreachable.
 - CodeGenFunction provides HaveInsertPoint and EnsureInsertPoint
   which respectively test if there is an insert point and ensure an
   insertion point exists (by making a dummy block).
 - Clearly mark functions in CodeGenFunction which can be called with
   no insertion point defined. Currently this is a limited set, and
   EmitStmt simply EnsureInsertPoint()s before emitting subsequent IR.

Remove EmitDummyBlock, which is no longer needed. Clients who haven't
already cleared the insertion point (typically via EmitBranch) can do
so by hand.

Remove isDummyBlock, which has effectively been renamed to
HaveInsertPoint.

The main thrust of this change is that we no longer have create dummy
blocks just to destroy them a short time later in EmitBlock in the
common case that there is no unreachable code following something like
a goto. 

Additionally, this means that we are not using the hokey condition in
isDummyBlock that a block without a name is a dummy block. Guess how
well that works when we never emit block names!

llvm-svn: 59089

llvm-svn: 59088

llvm-svn: 59087

This lets several failing tests get farther along, but doesn't completely fix any of them.

llvm-svn: 59086

invariants.

llvm-svn: 59085

llvm-svn: 59084

before creating the SUnit for the operation that it was unfolded from. This
allows each SUnit to have all of its predecessor SUnits available at the time
it is created. I don't know yet if this will be absolutely required, but it
is a little tidier to do it this way.

llvm-svn: 59083

TargetLoweringInfo variables for the scheduler.

llvm-svn: 59082

llvm-svn: 59081

Patch by Ilya Okonsky!

llvm-svn: 59080

llvm-svn: 59079

llvm-svn: 59077

- Added support for ObjCForCollectionStmt
- Fixed bug where expression values would be always set to uninitialized when loops were involved

llvm-svn: 59076

llvm-svn: 59075

llvm-svn: 59074

llvm-svn: 59073

llvm-svn: 59072

Remove incomplete lto-bugpoint tool. If there is an interest then we can resurrect this tool later on and finish implementation.

llvm-svn: 59071

llvm-svn: 59070

llvm-svn: 59069

llvm-svn: 59068

llvm-svn: 59067

Document written by Mason Woo (http://www.woo.com)!

llvm-svn: 59066

llvm-svn: 59064

llvm-svn: 59063

llvm-svn: 59061

install directory"

Patch by Lukasz Janyst!

llvm-svn: 59059

Introduce a single AST node SizeOfAlignOfExpr for all sizeof and alignof expressions, both of values and types.

llvm-svn: 59057

argument instead of taking the SelectionDAG's TargetMachine. This is
needed for some upcoming scheduler changes.

llvm-svn: 59055

llvm-svn: 59053

llvm-svn: 59052

library is added or changed.

llvm-svn: 59051

llvm-svn: 59050

http://developer.apple.com/documentation/Cocoa/Conceptual/ObjectiveC/Articles/chapter_7_section_2.html#//apple_ref/doc/uid/TP30001163-CH18-SW3

Need to modify GRExprEngine, LiveVariables, and UninitializedValues to understand this construct.

llvm-svn: 59049

build on OS X.

Fix by Jjgod Jiang!

llvm-svn: 59048

llvm-svn: 59047

llvm-svn: 59046

to be sign-extended when it is promoted to 64 bits for intermediate
offset calculations. The offset calculations are done as uint64_t so that
overflow conditions are well defined.

This fixes a problem which is currently hidden by the x86 AsmPrinter but
which was exposed by r58917 (which is temporarily reverted).  See PR3027
for details.

llvm-svn: 59044

llvm-svn: 59043

llvm-svn: 59042