- 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

invariants.

llvm-svn: 59085

llvm-svn: 59081

Patch by Ilya Okonsky!

llvm-svn: 59080

llvm-svn: 59061

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

llvm-svn: 59057

 - Emits an unconditional branch, with extra logic to avoid generating
   spurious branches out of dummy blocks.

llvm-svn: 59037

the size of the -O0 output on some cases.  For example, on expr.c from
176.gcc, it shrinks the .ll file from 43164 to 42835 lines, and removed
references to two external symbols.

llvm-svn: 59034

condition is a constant.  This shrinks -O0 codegen by quite a bit
on some cases.

llvm-svn: 59033

llvm-svn: 59032

"dummy" blocks (blocks just used to make sure we have a place to dump
code to).

llvm-svn: 59022

 - Was confusing and only used in one small part of the code.

llvm-svn: 59020

 - No functionality change.

llvm-svn: 59017

speeds up the compiler by ~8% at -emit-llvm -O0.

llvm-svn: 58977

1. emit proper debug info for forward decls of structs.
2. emit DW_TAG_member nodes around members of a field like llvm-gcc does.

This slows down debug info generation, but is required for correctness.

llvm-svn: 58973

using MachineModuleInfo.  This runs at about the same speed as the old
code, but fixes a bunch of bugs and is simpler and shorter.

llvm-svn: 58971

llvm-svn: 58940

llvm-svn: 58892

generate the type of a member.

llvm-svn: 58889

llvm-svn: 58704

Add a new expression class, ObjCSuperExpr, to handle the Objective-C 'super'. Remove ObjCThis from PredefinedExpr

llvm-svn: 58698

llvm-svn: 58681

llvm-svn: 58680

llvm-svn: 58602

 - No functionality change.

llvm-svn: 58546

etc more generic. For some targets, long may not be equal to pointer size. For
example: PIC16 has int as i16, ptr as i16 but long as i32.

Also fixed a few build warnings in assert() functions in CFRefCount.cpp,
CGDecl.cpp, SemaDeclCXX.cpp and ParseDeclCXX.cpp.

llvm-svn: 58501

type.

llvm-svn: 58497

recursive types.
 - Style will be clean up in further patches.

llvm-svn: 58490

 - No functionality change.

llvm-svn: 58488

 - That is, the metadata for a protocol is only emitted if that
   protocol is actually used in the translation unit. This is
   important because Objective-C headers frequently contain a large
   number of protocol definitions, only a few of which will be used in
   any given file.

llvm-svn: 58400

va_list, not the value.  Patch fixes an assert on 
x86-64 and a wrong-code bug on x86.  I'm not completely sure, 
but I think it's a regression from r58306.

Does anyone run regression tests regularly on x86-64? The crash should 
have been picked up there.

llvm-svn: 58366

in the driver (this means we no longer run the verifier per function, however).

llvm-svn: 58307

llvm-svn: 58304

t.c:1:13: error: cannot codegen this designators yet
int a[10] = {2, 4, [8]=9, 10};
            ^~~~~~~~~~~~~~~~~

llvm-svn: 58220

must be under the `tools' subdirectory of the LLVM *source* tree.

llvm-svn: 58180

CGDebugInfo::getOrCreateCompileUnit.

llvm-svn: 58081

FileIDs. This seems better conceptually and lets the SourceManager
handle details of mapping the location to a file ID.
 - In practice, fixes an assert because this code wasn't using
   getPhysicalLoc.

llvm-svn: 58055

llvm-svn: 57924

llvm-svn: 57909

for Obj-C methods.

llvm-svn: 57769