Add LIS::pruneValue() and extendToIndices(). These two functions are
used by the register coalescer when merging two live ranges requires
more than a trivial value mapping as supported by LiveInterval::join().

The pruneValue() function can remove the part of a value number that is
going to conflict in join(). Afterwards, extendToIndices can restore the
live range, using any new dominating value numbers and updating the SSA
form.

Use this complex value mapping to support merging a register into a
vector lane that has a conflicting value, but the clobbered lane is
undef.

llvm-svn: 164074

These extra operands are not needed by register allocators using
VirtRegRewriter, and RAFast don't need them any longer.

By omitting the <imp-def> operands, it becomes possible for the new
register coalescer to track which lanes are valid and which are undef.

llvm-svn: 164073

I have to work out the Target/CodeGen header dependencies
before putting this back.

llvm-svn: 164072

llvm-svn: 164071

llvm-svn: 164070

llvm-svn: 164068

llvm-svn: 164067

llvm-svn: 164066

llvm-svn: 164065

llvm-svn: 164064

llvm-svn: 164063

TableGen subtarget emitter. Generate resolveSchedClass generated hook for resolving instruction variants.

llvm-svn: 164062

llvm-svn: 164061

llvm-svn: 164060

Map the CodeGenSchedule object model onto data tables. The structure
of the data tables is defined in MC, so for convenience we include
MCSchedule.h. The alternative is maintaining a redundant copy of the
table structure definitions. Mapping the object model onto data tables
is sufficiently complicated that it should not be interleaved with
emitting source code. This avoids major problem with the backend for
itinerary generation.

llvm-svn: 164059

llvm-svn: 164058

llvm-svn: 164057

While we are setting the earlier def to true, also make it live.

llvm-svn: 164056

llvm-svn: 164055

destination in SimplifyCondBranchToCondBranch.

llvm-svn: 164054

checking on property declared in class extension.
// rdar://12214070

llvm-svn: 164053

llvm-svn: 164052

we will do that when we implement the full save/restore.

Patch by Reed Kotler.

llvm-svn: 164051

llvm-svn: 164050

stomped on.

llvm-svn: 164049

llvm-svn: 164048

between objc method parameter name and colon.
// rdar://12263549

llvm-svn: 164047

in ObjCMethods.

Extend FunctionTextRegion to represent ObjC methods as well as
functions. Note, it is not clear what type ObjCMethod region should
return. Since the type of the FunctionText region is not currently used,
defer solving this issue.

llvm-svn: 164046

Increase the static sizes of some SmallSets. finalizeBundle() is very frequently called for some backends, and growing into an std::set is overkill for these numbers.

llvm-svn: 164044

llvm-svn: 164043

- Preserve the original NOutVT during casting from vector to integer by
  extracting vector elements.

llvm-svn: 164042

Keep GCC's warnings happy. It can't reason out that the state machine won't
ever hit the potentially uninitialized use in OPC_FilterValue.

llvm-svn: 164041

llvm-svn: 164040

Retain cycles happen in the case where a block is persisted past its
life on the stack, and the way that occurs is by copying the block.
We should thus look through any explicit copies we see.

Note that Block_copy is actually a type-safe wrapper for _Block_copy,
which does all the real work.

<rdar://problem/12219663>

llvm-svn: 164039

LLVM_ATTRIBUTE_USED forces emission of a function. To silence unused function warnings use LLVM_ATTRIBUTE_UNUSED.

llvm-svn: 164036

MSVC8 won't compile lower_bound if one is missing.

llvm-svn: 164035

llvm-svn: 164033

The cases where no initialization happens should still be checked for logic flaws.

llvm-svn: 164032

Fixes http://code.google.com/p/address-sanitizer/issues/detail?id=113

llvm-svn: 164031

llvm-svn: 164030