Change linkage computation so it doesn't depend on FunctionDecl::isExternC or VarDecl::isExternC, and instead queries what it actually cares about: whether the given declaration is inside an extern "C" context.  Fundamentally, figuring out whether a function/variable uses C linkage requires knowing the linkage, and the logic in FunctionDecl::isExternC and VarDecl::isExternC was getting it wrong.  Given that, fix FunctionDecl::isExternC and VarDecl::isExternC to use much simpler implementations that depend on the fixed linkage computation.

Fixes a regression to test/SemaCXX/linkage.cpp caused by a new warning exposing the fact that the internal state was wrong.

llvm-svn: 148207

llvm-svn: 148206

llvm-svn: 148205

Shrinks OverloadCandidate from 208 to 168 bytes.

llvm-svn: 148204

llvm-svn: 148202

Fixed two double "int close(int fd)" issues found by our file descriptor
interposing library on darwin:

The first is in SBDebugger::SetInputFileHandle (FILE *file, bool transfer_ownership)
where we would give our FILE * to a lldb_private::File object member variable and tell
it that it owned the file descriptor if "transfer_ownership" was true, and then we
would also give it to the communication plug-in that waits for stdin to come in and
tell it that it owned the FILE *. They would both try and close the file.

The seconds was when we use a file descriptor through ConnectionFileDescriptor 
where someone else is creating a connection with ConnectionFileDescriptor and a URL
like: "fd://123". We were always taking ownwership of the fd 123, when we shouldn't
be. There is a TODO in the comments that says we should allow URL options to be passed
to be able to specify this later (something like: "fd://123?transer_ownership=1"), but
we can get to this later.

llvm-svn: 148201

llvm-svn: 148200

should fix builds.

llvm-svn: 148199

Give OverloadCandidateSet the responsibility for destroying the implicit conversion sequences so we don't get double frees when the vector reallocates.

llvm-svn: 148198

llvm-svn: 148197

llvm-svn: 148196

- don't strip too many frames from the backtrace when logging close backtraces
- cleanup some logging messages

llvm-svn: 148195

Add a bunch of AVX instructions to the folding tables. Also fixed the alignment on 256-bit AVX2 instructions.

llvm-svn: 148194

llvm-svn: 148193

llvm-svn: 148192

non-determinism in the 32 bit dragonegg buildbot.  Original commit
message:
Only emit the Leh_func_endN symbol when needed.

llvm-svn: 148191

llvm-svn: 148190

When the lldb_private::Debugger goes away, it should cleanup all
of its targets.

llvm-svn: 148189

llvm-svn: 148188

we have a redeclarable type, and only use the new virtual versions
(getPreviousDeclImpl() and getMostRecentDeclImpl()) when we don't have
that type information. This keeps us from penalizing users with strict
type information (and is the moral equivalent of a "final" method).

Plus, settle on the names getPreviousDecl() and getMostRecentDecl()
throughout.

llvm-svn: 148187

To avoid malloc thrashing give OverloadCandidateSet an inline capacity for conversion sequences.
We use the fact that OverloadCandidates never outlive the OverloadCandidateSet and have a fixed
amount of conversion sequences.

This eliminates the oversized SmallVector from OverloadCandidate shrinking it from 752 to 208 bytes.

On the test case from the "Why is CLANG++ so freaking slow" thread on llvmdev this avoids one gig
of vector reallocation (including memcpy) which translates into 5-10% speedup on Lion/x86_64.

Overload candidate computation is still the biggest malloc contributor when compiling templated
c++ code.

llvm-svn: 148186

Replace push_back with addCandidate which will let us make use of the fixed size of
the conversion sequence vector soon.

llvm-svn: 148185

virtual functions that provide previous/most recent redeclaration
information for any declaration. Use this to eliminate the redundant,
less efficient getPreviousDecl() functions.

llvm-svn: 148184

llvm-svn: 148183

Add a FIXME for mutation of the common pointer of a RedeclarableTemplateDecl. It is not clear that it's worth delaying the allocation of said pointer

llvm-svn: 148182

Redeclarable<RedeclarableTemplateDecl>, eliminating a bunch of
redeclaration-chain logic both in RedeclarableTemplateDecl and
especially in its (de-)serialization.

As part of this, eliminate the RedeclarableTemplate<> class template,
which was an abstraction that didn't actually save anything.

llvm-svn: 148181

llvm-svn: 148180

llvm-svn: 148179

APValue::Array and APValue::MemberPointer. All APValue values can now be emitted
as constants.

Add new CGCXXABI entry point for emitting an APValue MemberPointer. The other
entrypoints dealing with constant member pointers are no longer necessary and
will be removed in a later change.

Switch codegen from using EvaluateAsRValue/EvaluateAsLValue to
VarDecl::evaluateValue. This performs caching and deals with the nasty cases in
C++11 where a non-const object's initializer can refer indirectly to
previously-initialized fields within the same object.

Building the intermediate APValue object incurs a measurable performance hit on
pathological testcases with huge initializer lists, so we continue to build IR
directly from the Expr nodes for array and record types outside of C++11.

llvm-svn: 148178

Fixes PR11761: bad IR w/ redundant Phi elim

llvm-svn: 148177

data.

llvm-svn: 148176

llvm-svn: 148175

llvm-svn: 148174

llvm-svn: 148173

llvm-svn: 148172

llvm-svn: 148171

llvm-svn: 148170

index parameters.

llvm-svn: 148169

live across BBs before register allocation. This miscompiled 197.parser
when a cmp + b are optimized to a cbnz instruction even though the CPSR def
is live-in a successor.
        cbnz    r6, LBB89_12
...
LBB89_12:
        ble     LBB89_1

The fix consists of two parts. 1) Teach LiveVariables that some unallocatable
registers might be liveouts so don't mark their last use as kill if they are.
2) ARM constantpool island pass shouldn't form cbz / cbnz if the conditional
branch does not kill CPSR.

rdar://10676853

llvm-svn: 148168

llvm-svn: 148167