This commit teaches the X86 backend to create the same X86 instructions when it
lowers an sadd/ssub with overflow intrinsic and a conditional branch that uses
that overflow result. This allows SelectionDAG to recognize and remove one of
the redundant operations.

This fixes <rdar://problem/15874016> and <rdar://problem/15661073>.

Reviewed by Nadav

llvm-svn: 199976

These all use the compare-and-swap CASA/CASXA instructions.

llvm-svn: 199975

Add test cases to check parsing of v9 double registers and their aliased quad registers.

llvm-svn: 199974

Add new virtual virtual function `isRelaOutputFormat` to the
`ELFLinkingContext` class. Call this function everywhere we need to
select a relocation table format.

Patch reviewed by Shankar Easwaran and Rui Ueyama.

llvm-svn: 199973

llvm-svn: 199972

llvm-svn: 199971

of the differences we identified here have been fixed by improvements in GCC.

llvm-svn: 199970

llvm-svn: 199969

llvm-svn: 199968

llvm-svn: 199967

We completely skipped promotion in LICM if the loop has a preheader or
dedicated exits, but not *both*. We hoist if there is a preheader, and
sink if there are dedicated exits, but either hoisting or sinking can
move loop invariant code out of the loop!

I have no idea if this has a practical consequence. If anyone has ideas
for a test case, let me know.

llvm-svn: 199966

llvm-svn: 199965

llvm-svn: 199964

literal that bakes a pass name and forces parsing it in the pass
manager.

llvm-svn: 199963

override for the type of 'this', also clear it out (unless we're entering the
context of a lambda-expression, where it should be inherited).

llvm-svn: 199962

GDBRemoteCommunicationServer::LaunchProcess () now uses the built-up
ProcessLaunchArgs rather than clearing and setting items from the
function arguments. I added setters for the arguments and launch
flags, which lldb-gdbserver uses for its specification of the
commandline-specified startup app (if one is specified).

LaunchProcess () also adds a new reaper monitor that it applies to
the launched process if no process monitor has already been applied.

This addresses an issue where the 'k' command would generate (possibly
false) warnings about not being able to positively state whether a
killed process actually terminated. GDBRemoteCommunicationServer now
definitely knows the disposition of its children.

llvm-svn: 199959

Differential Revision: http://llvm-reviews.chandlerc.com/D2606

llvm-svn: 199958

member-declaration. In the process, fix a couple of bugs that had crept in
where we would parse the first and subsequent member-declarators differently
(in particular, we didn't accept an asm-label on a member function definition
within a class, and we would accept virt-specifiers and attributes in the wrong
order on the first declarator but not on subsequent ones).

llvm-svn: 199957

llvm-svn: 199956

llvm-svn: 199955

the existence of comdat/special sections.

llvm-svn: 199954

Don't copy entire value into m_data unless we need to. If we did this and the entire variable failed to be read, we wouldn't be able to display any actual values that were in good memory.  This will also make things more efficient by not have every struct/union/class/array copy its entire value into a ValueObject.m_data even though no one was using it.

llvm-svn: 199953

llvm-svn: 199952

llvm-svn: 199951

This returns a list of valid (and useful) completions for a context (a list
of outer matchers), ordered by decreasing relevance then alphabetically. It
will be used by the matcher parser to implement completion.

Differential Revision: http://llvm-reviews.chandlerc.com/D2210

llvm-svn: 199950

llvm-svn: 199949

registers in memory addresses that do not match the index register. As it does
for .att_syntax.

rdar://15887380

llvm-svn: 199948

The client and server now use a single unified low-level RPC core built around
LLVM's existing cross-platform abstractions.

llvm-svn: 199947

<rdar://problem/15736085>

llvm-svn: 199946

lldb-gdbserver was launching the commandline-specified launch process
directly, without GDBRemoteCommunicationServer knowing anything about
it.  As GDBRemoteCommunicationServer is the piece that manages and
knows about processes that the gdb remote protocol discusses with
the client end, it is important that it know about launched processes.

This change also implements the k gdb remote protocol message, having it
kill all known spawned processes when it is received.

(Note: in lldb-gdbserver, the spawned processes are not properly
monitored yet. The response to the k packet will complain that
spawned processes do not really appear to be getting killed even if
they are. This will get addressed soon.)

llvm-svn: 199945

in the step-avoid-libraries list.

llvm-svn: 199944

llvm-svn: 199943

scale factors in memory addresses. As it does for .att_syntax.

It was producing:
Assertion failed: (((Scale == 1 || Scale == 2 || Scale == 4 || Scale == 8)) && "Invalid scale!"), function CreateMem, file /Volumes/SandBox/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp, line 1133.

rdar://14967214

llvm-svn: 199942

llvm-svn: 199941

code this looks correct, but could use review. The previous
was definitely not correct.

llvm-svn: 199940

SBType SBType::GetTypedefedType();

Also added the ability to get a type by type ID from a SBModule:

SBType SBModule::GetTypeByID (lldb::user_id_t uid);

llvm-svn: 199939

llvm-svn: 199938

Added a new lldb command that can parse all struct and class types for one or more shared libraries.

llvm-svn: 199937

llvm-svn: 199934

loops. Writing back to the accumulator (231-type) allows the coalescer to
eliminate an extra copy.

llvm-svn: 199933