Part of rdar://11570854

llvm-svn: 157786

when migrating.

rdar://11569198

llvm-svn: 157785

Anonymous union members within a struct are now properly handled as an unevaluated field in C++11 mode.  This fixes PR12866.

llvm-svn: 157784

llvm-svn: 157783

the confusion among all of the uses of Best* in relation to the set of
possible typo correction results. Also add a method to return the set of
typo corrections that have the single best edit distance--it returns the
second half of the first pair in TypoEditDistanceMap (with
getBestEditDistance already returning the first half).

llvm-svn: 157781

have correct pointer type or issue error,
instead of crashing in IRGen. // rdar:// 11569860

llvm-svn: 157780

llvm-svn: 157779

For hardware watchpoint enable/disable, in case the kernel call to set the revised debug state fails, we need to recover the local cache to the previous known state.

llvm-svn: 157778

disabled by default for now; we can discusse the default value (& name) later

llvm-svn: 157777

llvm-svn: 157776

 - compute size & offset at the same time. The side-effects of this are that we now support negative GEPs. It's now approaching a phase that it can be reused by other passes (e.g., lowering of the objectsize intrinsic)
 - use APInt throughout to handle wrap-arounds
 - add support for PHI instrumentation
 - add a cache (required for recursive PHIs anyway)
 - remove hoisting support for now, since it was wrong in a few cases

sorry for the churn here.. tests will follow soon.

llvm-svn: 157775

now Reader and Writer subclasses for each file format.  Each Reader and
Writer subclass defines an "options" class which controls how that Reader
or Writer operates.

llvm-svn: 157774

This way the constructors do all the hard work. No intended functionality change.

llvm-svn: 157773

llvm-svn: 157772

Improve logging a bit.

llvm-svn: 157771

llvm-svn: 157770

rdar://problem/11562050

llvm-svn: 157767

should override the thread's thread plan's run state.

llvm-svn: 157766

llvm-svn: 157765

llvm-svn: 157764

llvm-svn: 157763

We should lock the number of elements after the initial parsing is
complete. Recursive AST visitors in AnalyzesConsumer and CallGarph can
trigger lazy pch deserialization resulting in more calls to
HandleTopLevelDecl and appending to the LocalTUDecls list. We should
ignore those.

llvm-svn: 157762

llvm-svn: 157761

llvm-svn: 157760

llvm-svn: 157759

(which regularly conflicts with existing symbols
in Objective-C).

llvm-svn: 157758

Patch by Yiannis Tsiouris!

llvm-svn: 157757

llvm-svn: 157756

This patch will optimize the following
        movq    %rdi, %rax
        subq    %rsi, %rax
        cmovsq  %rsi, %rdi
        movq    %rdi, %rax
to
        cmpq    %rsi, %rdi
        cmovsq  %rsi, %rdi
        movq    %rdi, %rax

Perform this optimization if the actual result of SUB is not used.

rdar: 11540023
llvm-svn: 157755

Reg-units are named after their root registers, and most units have a
single root, so they simply print as 'AL', 'XMM0', etc. The rare dual
root reg-units print as FPSCR~FPSCR_NZCV, FP0~ST7, ...

The printing piggybacks on the existing register name tables, so no
extra const data space is required.

llvm-svn: 157754

Each register unit has one or two root registers. The full set of
registers containing a given register unit can be computed as the union
of the root registers and their super-registers.

Provide an MCRegUnitRootIterator class to enumerate the roots.

llvm-svn: 157753

llvm-svn: 157752

Fixed a case where multiple threads can be asking to send a packet to the GDB server and one of three things will happen:
1 - everything works
2 - one thread will fail to send the packet due to not being able to get the sequence mutex
3 - one thread will try and interrupt the other packet sending and fail and not send the packet

Now the flow is a bit different. Prior to this fix we did:

if (try_get_sequence_mutex()) {
    send_packet()
    return success;
} else {
   if (async_ok) {
       interrupt()
       send_packet() 
       resume()
       return success;
   }
}
return fail

The issue is that the call to "try_get_sequence_mutex()" could fail if another thread was sending a packet and could cause us to just not send the packet and an error would be returned.

What we really want is to try and get the sequence mutex, and if this succeeds, send the packet. Else check if we are running and if we are, do what we used to do. The big difference is when we aren't running, we wait for the sequence mutex so we don't drop packets. Pseudo code is:

if (try_get_sequence_mutex()) {
    // Safe to send the packet right away
    send_packet()
    return success;
} else {
    if (running) {
       // We are running, interrupt and send async packet if ok to do so,
       // else it is ok to fail
       if (async_ok) {
           interrupt()
           send_packet() 
           resume()
           return success;
        }
    }
    else {
        // Not running, wait for the sequence mutex so we don't drop packets
        get_sequence_mutex()
        send_packet()
        return success;
    }
}
return fail

llvm-svn: 157751

llvm-svn: 157750

Also make the checks stronger and test that we reject ranges that overlap
a previous wrapped range.

llvm-svn: 157749

llvm-svn: 157748

llvm-svn: 157747

llvm-svn: 157746

It was renamed in gcc/gas a while ago and causes all kinds of
confusion because it was named differently in llvm and clang.

llvm-svn: 157745

llvm-svn: 157744