a couple of existing transforms.  This fires surprisingly often, for
example when compiling gcc "(X+(-1))+1->X" fires quite a lot as well
as various "and" simplifications (usually with a phi node operand).
Most of the time this doesn't make a real difference since the same
thing would have been done elsewhere anyway, eg: by instcombine, but
there are a few places where this results in simplifications that we
were not doing before.

llvm-svn: 122326

llvm-svn: 122325

clang_getCursorLexicalParent() to cope with class and function
templates, along with the parent of the translation unit. Fixes PR8761
and PR8766.

llvm-svn: 122324

looking in is complete. Fixes PR8756.

llvm-svn: 122323

checking trivial comparisons. Fixes PR8795.

llvm-svn: 122322

of the problems with my last attempt were in the updating of LiveIntervals
rather than the coalescing itself. Therefore, I decided to get that right first
by essentially reimplementing the existing PHIElimination using LiveIntervals.

It works correctly, with only a few tests failing (which may not be legitimate
failures) and no new verifier failures (at least as far as I can tell, I didn't
count the number per file).

llvm-svn: 122321

Type legalization splits up i64 values into pairs of i32 values, which leads
to poor quality code when inserting or extracting i64 vector elements.
If the vector element is loaded or stored, it can be treated as an f64 value
and loaded or stored directly from a VPR register.  Use the pre-legalization
DAG combiner to cast those vector elements to f64 types so that the type
legalizer won't mess them up.  Radar 8755338.

llvm-svn: 122319

llvm-svn: 122318

llvm-svn: 122317

the process.  The custom thread started before this point is running in a loop
waiting for events to come.

llvm-svn: 122316

llvm-svn: 122315

section.

This helps because in practice sections form a dag with debug sections pointing
to text sections. Finishing up the text sections first makes the debug section
relaxation trivial.

llvm-svn: 122314

Fixes rdar://8782223

llvm-svn: 122313

llvm-svn: 122312

Fix PR8832.

llvm-svn: 122311

something that just glues two nodes together, even if it is
sometimes used for flags.

llvm-svn: 122310

llvm-svn: 122309

llvm-svn: 122308

to be the one we want to use. bugpoint reduced testcase is a little large,
I'll see if I can simplify it down more.

Fixes part of rdar://8782207

llvm-svn: 122307

llvm-svn: 122306

they are just as useless, but at least a bit more gramatical

llvm-svn: 122305

debugger and to exercise some event APIs.

llvm-svn: 122304

tPseudoInst class, its size was changed from "special" to "2 bytes". This is
incorrect because the jump table will no longer be taken into account when
calculating branch offsets.
<rdar://problem/8782216>

llvm-svn: 122303

llvm-svn: 122302

Edge bundles is an annotation on the CFG that turns it into a bipartite directed
graph where each basic block is connected to an outgoing and an ingoing bundle.
These bundles are useful for identifying regions of the CFG for live range
splitting.

llvm-svn: 122301

in an exception specification.

llvm-svn: 122297

llvm-svn: 122296

Apply the noreturn attribute while creating a builtin function's type.
Remove the getNoReturnType() API.

llvm-svn: 122295

unknown type and there is a possibility that
at runtime method is resolved to a deprecated or 
unavailable method.  Addreses // rdar://8769853

llvm-svn: 122294

This implementation already exists as ConnectedVNInfoEqClasses in
LiveInterval.cpp, and it seems to be generally useful to have a light-weight way
of forming equivalence classes of small integers.

IntEqClasses doesn't allow enumeration of the elements in a class.

llvm-svn: 122293

specifications. We can't yet instantiate them, however, since I
tripped over PR8835.

llvm-svn: 122292

Speculatively revert the use of DenseMap in LazyValueInfo, which may be causing Linux self-host failures.

llvm-svn: 122291

Remove an assertion that is causing crashes. We do need to find a way to reproduce when this assertion asserts, but we should crash our debug session because of it. For now we log to stderr in hope of tracking it down.

llvm-svn: 122290

lists, so that all such transformations go through a single,
iterator-based transformation function. This is the only place where
we need to implement the logic for transforming pack expansions whose
pattern is a template argument.

Unfortunately, the new cases this refactoring brings into the fold
can't be meaningfully tested yet. We need template argument deduction
to work well enough for variadic function templates first.

llvm-svn: 122289

llvm-svn: 122288

shouldWalkTypesOfTypeLocs() that determines whether it should walk the
Types within TypeLocs. This walk is redundant, but perhaps required
for some clients. Disabling this redundant walk in the unexpanded
parameter pack finder produces better results, because we get
parameter packs with source location info *unless* such source
location information isn't available.

llvm-svn: 122287

scan the debugger output for program counter when it comes to the output of 'Up Stack' or 'Down Stack'
gud commands.  Remove the single quotes around the argument strings for "settings set frame-format"
and "settings set thread-format" commands to avoid the single quotes which were being emitted as part
of the debugger output.

llvm-svn: 122286

the first qualifier in scope. We can't adequately test this test,
unfortunately.

llvm-svn: 122283

Test template instantiation of pack expansions where the parameter pack is in a nested-name-specifier

llvm-svn: 122282

don't warn if an argument is not used because it is shadowed by a subsequent argument.

llvm-svn: 122281