llvm-svn: 157060

It is no longer necessary to separate VirtCopies, PhysCopies, and
ImpDefCopies. Implicitly defined copies are extremely rare after we
added the ProcessImplicitDefs pass, and physical register copies are not
joined any longer.

llvm-svn: 157059

llvm-svn: 157058

Patch by Jack Carter.

llvm-svn: 157057

This has been disabled for a while, and it is not a feature we want to
support. Copies between physical and virtual registers are eliminated by
good hinting support in the register allocator. Joining virtual and
physical registers is really a form of register allocation, and the
coalescer is not properly equipped to do that. In particular, it cannot
backtrack coalescing decisions, and sometimes that would cause it to
create programs that were impossible to register allocate, by exhausting
a small register class.

It was also very difficult to keep track of the live ranges of aliasing
registers when extending the live range of a physreg. By disabling
physreg joining, we can let fixed physreg live ranges remain constant
throughout the register allocator super-pass.

One type of physreg joining remains: A virtual register that has a
single value which is a copy of a reserved register can be merged into
the reserved physreg. This always lowers register pressure, and since we
don't compute live ranges for reserved registers, there are no problems
with aliases.

llvm-svn: 157055

llvm-svn: 157054

llvm-svn: 157051

llvm-svn: 157050

Protect __shared_weak_count::__get_deleter declaration with _LIBCPP_NO_RTTI.  Fixes http://llvm.org/bugs/show_bug.cgi?id=12867

llvm-svn: 157049

llvm-svn: 157048

llvm-svn: 157047

SelectionDAGBuilder::Clusterify : main functinality was replaced with CRSBuilder::optimize, so big part of Clusterify's code was reduced.

llvm-svn: 157046

llvm-svn: 157044

llvm-svn: 157043

<rdar://problem/11455913>

"target symbol add" should flush the cached frames
"register write" should flush the thread state in case registers modifications change stack

 

llvm-svn: 157042

llvm-svn: 157040

warning. This also makes us warn on tags, which, ironically, is the only case
gcc warns on.

llvm-svn: 157039

non-profitable commute using outdated info. The test case would still fail
because of poor pre-RA schedule. That will be fixed by MI scheduler.

rdar://11472010

llvm-svn: 157038

allocating functions.

llvm-svn: 157037

For "process attach", make the success criterion as the inferior changes its state to eStateStopped.
Otherwise, mark it as a failure and say so.

llvm-svn: 157036

Temporarily disabled the MCJIT tests for Darwin, because the RuntimeDyldMachO has a problems with relocations for 32bit x86.

llvm-svn: 157035

llvm-svn: 157034

llvm-svn: 157033

this fixes the missed optimization I was seeing in the CorrelatedValuePropagation pass

llvm-svn: 157032

containing no symbols.  Fixed the crash and fixed it not disassembling anything.

llvm-svn: 157031

This is the same as the other tests: Clever tricks are required to make
the arguments and return value line up in a single-instruction function.
It rarely happens in real life.

We have plenty other examples of this behavior.

llvm-svn: 157030

Make the debug output that comes as printf's from code called in the target for getting ObjC class names and ObjC method implementations only come out when doing verbose logging.

llvm-svn: 157029

The "run" and "r" aliases were for gdb compatability, so make then do what GDB does by default: launch in a shell.

For those that don't want launching with a shell by default, add the following to your ~/.lldbinit file:

command unalias run
command unalias r
command alias r process launch --
command alias run process launch --

llvm-svn: 157028

This option has been disabled for a while, and it is going away so I can
clean up the coalescer code.

The tests that required physreg joining to be enabled were almost all of
the form "tiny function with interference between arguments and return
value". Such functions are usually inlined in the real world.

The problem exposed by phys_subreg_coalesce-3.ll is real, but fairly
rare.

llvm-svn: 157027

boxed expressions returning numbers and strings.

I also added boxed expressions to our testcases, and
enabled boxed expressions when libarclite is linked into
the inferior.

llvm-svn: 157026

that the methods have the same number of parameters, although we
certainly assumed this in many places. Objective-C can be insane
sometimes. Fixes <rdar://problem/11460990>.

llvm-svn: 157025

llvm-svn: 157024

llvm-svn: 157022

In the override search for Objective-C methods, protect against ASTs that have NULL interfaces behind a category, which can happen in invalid code. Fixes <rdar://problem/11478173>, a recent regression

llvm-svn: 157021

llvm-svn: 157020

the 0b10 mask encoding bits.  Make MSR APSR writes without a _<bits> qualifier
an alias for MSR APSR_nzcvq even though ARM as deprecated it use.  Also add
support for suffixes (_nzcvq, _g, _nzcvqg) for APSR versions.  Some FIXMEs in
the code for better error checking when versions shouldn't be used.
rdar://11457025

llvm-svn: 157019

We're certain that it doesn't exist.

llvm-svn: 157017

- Added HOST_ARCH to Makefile.config.in
The HOST_ARCH will be used by MCJIT tests filter, because MCJIT supported only x86 and ARM architectures now.

llvm-svn: 157015

llvm-svn: 157014

Restore Xcode as a valid white list client using the XPC root launcher

llvm-svn: 157012