Fix an issue with the IR sink pass found by inspection.  (I'm not sure anyone is actually using this, but might as well fix it since I found the issue.)

llvm-svn: 138965

llvm-svn: 138964

Remove broken emacs mode major notation marking a C++ file as C.
No functionality change.

llvm-svn: 138963

Make isSafeToSpeculativelyExecute() return the right answer for some new instructions.  Found by inspection; not sure what practical impact, if any, this has.

llvm-svn: 138962

Reimplemented much of <istream> such that single character extractions do not check to see if this is the last character in the stream and thus never set eofbit.  This fixes http://llvm.org/bugs/show_bug.cgi?id=10817 .  This fix requires a recompiled libc++.dylib to be fully implemented.  The recompiled libc++.dylib is ABI compatible with that shipped on Lion.

llvm-svn: 138961

Objective-C method buffering(rdar://10056942)

Turned out the same issue existed for C++ inline methods.

llvm-svn: 138960

LangOptions, rather than making distinct copies of
LangOptions. Granted, LangOptions doesn't actually get modified, but
this will eventually make it easier to construct ASTContext and
Preprocessor before we know all of the LangOptions.

llvm-svn: 138959

for now.

llvm-svn: 138958

llvm-svn: 138957

llvm-svn: 138955

llvm-svn: 138954

An instruction may define part of a register where the other bits are
undefined. In that case, it is safe to rematerialize the instruction.
For example:

  %vreg2:ssub_0<def> = VLDRS <cp#0>, 0, pred:14, pred:%noreg, %vreg2<imp-def>

The extra <imp-def> operand indicates that the instruction does not read
the other parts of the virtual register, so a remat is safe.

This patch simply allows multiple def operands for the virtual register.
It is MI->readsVirtualRegister() that determines if we depend on a
previous value so remat is impossible.

llvm-svn: 138953

llvm-svn: 138952

only one use. Fix PR10825.

llvm-svn: 138951

a data using DataEncoder.

Added DataEncoder to the lldb-forward.h file.

llvm-svn: 138950

can reserve a block of memory and store stuff into it.

llvm-svn: 138949

llvm-svn: 138948

This concludes //rdar://8843851

llvm-svn: 138947

llvm-svn: 138946

The problem is fixed for all register allocators by r138944, so this
patch is no longer necessary.

<rdar://problem/10032939>

llvm-svn: 138945

An instruction that redefines only part of a larger register can never
be rematerialized since the virtual register value depends on the old
value in other parts of the register.

This was fixed for the inline spiller in r138794.  This patch fixes the
problem for all register allocators, and includes a small test case.

<rdar://problem/10032939>

llvm-svn: 138944

include guards don't show up as macro definitions in every translation
unit that imports a module. Macro definitions can, however, be
exported with the intentionally-ugly #__export_macro__
directive. Implement this feature by not even bothering to serialize
non-exported macros to a module, because clients of that module need
not (should not) know that these macros even exist.

llvm-svn: 138943

I had to force -fno-delayed-template-parsing on some Index tests because delayed template parsing will change the output of some tests.

llvm-svn: 138942

and doing a simple search. Before we would manually check for the linker
before the -B options were searched.

llvm-svn: 138941

llvm-svn: 138940

free() is returned by realloc(). Most code expect NULL.

And we only need to transfer one final ProgramState.

llvm-svn: 138937

llvm-svn: 138936

semantic analysis when taking the address of an xvalue. Instead, just
build the unary operator directly, since it's safe to do so (from the
IRgen and AST perspectives) for any glvalue. Fixes PR10822.

llvm-svn: 138935

Teach MachineLICM reg pressure tracking code to deal with MVT::untyped. Sorry, I can't come up with a small test case. rdar://10043690

llvm-svn: 138934

llvm-svn: 138933

Resubmit with fix. Properly remove the instructions except for landingpad, which should be removed only when its invokes are.

llvm-svn: 138932

llvm-svn: 138931

The landingpad instruction can be removed only when its invokes are removed.

llvm-svn: 138930

disassemble with no arguments disassembles at the pc.  Also got "disassemble -f" to work, that had gotten broken at some point in the past.

llvm-svn: 138929

llvm-svn: 138928

llvm-svn: 138927

The initial incentive was to fix a crash when PCH chaining categories
to an interface, but the fix was done in the "modules way" that I hear
is popular with the kids these days.

Each module stores the local chain of categories and we combine them
when the interface is loaded. We also warn if non-dependent modules
introduce duplicate named categories.

llvm-svn: 138926

llvm-svn: 138925

Added canClobberReachingPhysRegUse() to handle a particular pattern in
which a two-address instruction could be forced to interfere with
EFLAGS, causing a compare to be unnecessarilly cloned.
Fixes rdar://problem/5875261

llvm-svn: 138924

This was found via a nightly build of 483.xalancbmk.

llvm-svn: 138923