make ScalarExprEmitter::EmitCompare() emit the expression with the correct type instead of always zext it to an int
this fixes codegen of simple exprs in C++ like 'if (x != 0)'

llvm-svn: 62060

llvm-svn: 61993

llvm-svn: 61314

llvm-svn: 61305

llvm-svn: 61301

simple test that actually does VLA codegen.

Note that despite the fact that the alloca isn't in the entry block, it 
should dominate all uses; this is guaranteed by the restrictions on goto 
into VLA scope in C99.

llvm-svn: 61291

llvm-svn: 60989

llvm-svn: 60943

ScalarExprEmitter::VisitBinLOr.

llvm-svn: 60415

llvm-svn: 59886

llvm-svn: 59622

value).
 - Use extra argument to EmitStoreThroughLValue to provide place to
   write update bit-field value if caller requires it.
 - This fixes several FIXMEs.

llvm-svn: 59615

llvm-svn: 59404

 - Use dotted notation for blocks related to a particular statement
   type.
 - Use .end for landing pads.

No functionality change in NDEBUG mode. :)

llvm-svn: 59210

what "cond.?" means, and this avoids quoting).

llvm-svn: 59128

This cuts another 200 lines off expr.ll, forming 23 selects.

llvm-svn: 59124

This happens for stuff like this:

x = cond1 || cond2 || cond3 || cond4;

llvm-svn: 59123

constant folding.

llvm-svn: 59121

shrinks code yet again by a bit.

llvm-svn: 59114

CodeGenFunction.cpp.  Change VisitConditionalOperator to use
constant fold instead of codegen'ing a constant conditional.

Change ForStmt to use EmitBranchOnBoolExpr, this shrinks
expr.c very slightly to 40239 lines.

llvm-svn: 59113

llvm-svn: 59103

llvm-svn: 59095

 - 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: 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

 - No functionality change.

llvm-svn: 59017

llvm-svn: 58681

 - No functionality change.

llvm-svn: 58546

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

llvm-svn: 58220

llvm-svn: 57716

llvm-svn: 57332

llvm-svn: 55759

 - Notably VLAs

llvm-svn: 55544

Objective-C property references.
 - This handles property references "more correctly" but setters still
   don't work.

llvm-svn: 55534

llvm-svn: 55410

llvm-svn: 55312

EmitScalarConversion().
 - Important for allowing Obj-C void * to id<X> casts and so on.
 - Not sure about this fix however, perhaps Type should understand
   that id is effectively a pointer type.

llvm-svn: 55311

llvm-svn: 55249