implements a framework that allows us to use information about previously
substituted values to simplify subsequent ones.  Maybe this would be useful
for C++'y stuff, who knows.  We now get:

t.c:4:21: error: invalid operands to binary expression ('size_t' (aka 'unsigned long *') and 'size_t')
  return (size_t) 0 + (size_t) 0;
         ~~~~~~~~~~ ^ ~~~~~~~~~~

on the testcase.  Note that size_t is only aka'd once.

llvm-svn: 84604

llvm-svn: 84603

pass them down into the ArgToStringFn implementation.  This allows 
redundancy across operands to a diagnostic to be eliminated.

This isn't used yet, so no functionality change.

llvm-svn: 84602

This was causing a ton of memory to be leaked when using HTML
diagnostics with the static analyzer (on large files with many errors).

llvm-svn: 84601

llvm-svn: 84600

llvm-svn: 84599

tracked. Instead of trying to manually keep track of these locations
while doing complex modifications, just recompute them when they're needed.
This fixes a bug in which the TopMBB and BotMBB were not correctly updated,
leading to invalid transformations.

llvm-svn: 84598

llvm-svn: 84597

llvm-svn: 84596

llvm-svn: 84595

breaking Clang's Apple-style build.

llvm-svn: 84592

llvm-svn: 84591

WIP.  I have yet to find the magic incantation to get the structure
type to be defined.  If someone has a pointer, love to hear it.

llvm-svn: 84590

llvm-svn: 84589

functions are not needed.

llvm-svn: 84587

llvm-svn: 84586

llvm-svn: 84585

region when doing lazy value retrieval of an ivar.

This fixes: <rdar://problem/7312221>

llvm-svn: 84584

llvm-svn: 84583

reasonable code like Codegen/ARM/2009-02-27-SpillerBug.ll, producing 
identical output except for superior formatting of constant pool entries.

llvm-svn: 84582

llvm-svn: 84579

llvm-svn: 84577

llvm-svn: 84575

llvm-svn: 84573

Leave Inst{11-8}, which represents the starting byte index of the extracted
result in the concatenation of the operands and is left unspecified.

Patch by Johnny Chen.

llvm-svn: 84572

Patch by Johnny Chen.

llvm-svn: 84570

retain/release checker: allow 'new', 'copy', 'alloc', 'init' prefix to start before '_' when determining Cocoa fundamental rule.

Fixes: <rdar://problem/7265711>
llvm-svn: 84569

<<=, >>= and the rest.

llvm-svn: 84568

no functionality change.

llvm-svn: 84567

by ignoring all implicit regs when lowering.

llvm-svn: 84566

llvm-svn: 84565

llvm-svn: 84564

llvm-svn: 84563

llvm-svn: 84562

llvm-svn: 84561

like:

@ BB#1:
	.align	2
LCPI1_0:
	.long	L_.str-(LPC0+8)

Note that proper indentation of the label :)

llvm-svn: 84558

llvm-svn: 84555

appropriate restore location for the spill as well as perform the actual
save and restore.

The Thumb1 target uses this to make sure R12 is not clobbered while a spilled
scavenger register is live there.

llvm-svn: 84554

llvm-svn: 84553

clang_createTranslationUnit() and clang_createTranslationUnitFromSourceFile(). The user can now
specify if the diagnostics from Clang are printed to stderr or are silenced completely. We can
obviously evolve this API to be more general in the future.

Note: Added a FIXME since I wasn't certain what was the best way to redirect to something analogous
to '/dev/null' on Windows.

llvm-svn: 84548