eraseFromDisk does the same check. This avoids a stat call
in the common case.

llvm-svn: 117744

llvm-svn: 117743

llvm-svn: 117742

llvm-svn: 117741

llvm-svn: 117740

methods in protocols when protocols are in system
headers and thus ignored. //rdar: //8227199

llvm-svn: 117739

encoder functions.

llvm-svn: 117738

llvm-svn: 117737

in asm's.  PR 8501, 8602988.
I don't like including Type.h where it is; the idea was
to get references to X86_MMXTy out of the common code.
Maybe there's a better way?

llvm-svn: 117736

just

.type   foo,@object

will produce an undefined reference to foo. On the other hand, a file with
just

.weakref bar, foo

will not. It is somewhat hard to support both in MC since both statements
should create the symbols. It should be possible if we really need to by
adding to the flags, but hopefully that is not necessary.

With this patch we do not produce a undefined reference in any of those cases.
The assembly file needs an actual use for the undefined reference to be
present.

This is in preparation for a patch implementing .weakref.

llvm-svn: 117735

llvm-svn: 117734

llvm-svn: 117733

the performance of C++ PCH and reducing stack depth in the reader.

llvm-svn: 117732

llvm-svn: 117731

llvm-svn: 117730

for namespace-scope variable declarations.

Apply visibility in IR gen to variables that are merely declared
and never defined.  We were previously emitting these with default
visibility unless they were declared with private_extern.

Ignore global visibility settings when computing visibility for
a declaration's context, and key several conditions on whether a
visibility attribute exists anywhere in the hierarchy as opposed
to whether it exists at the current level.

llvm-svn: 117729

llvm-svn: 117728

llvm-svn: 117727

tests should be near the test summary message, instead of way up in the beginning.

llvm-svn: 117726

llvm-svn: 117725

llvm-svn: 117724

llvm-svn: 117723

llvm-svn: 117722

This code had previously used 2*N, where N is the mask length, to represent
undef.  That is not safe because the shufflevector operands may have more
than N elements -- they don't have to match the result type.

llvm-svn: 117721

llvm-svn: 117720

Allow splats even if they don't match either of the original shuffles,
possibly due to undef entries in the shuffles masks.  Radar 8597790.
Also fix some 80-column violations.

llvm-svn: 117719

llvm-svn: 117718

llvm-svn: 117717

llvm-svn: 117716

than just the entire log channel.

Add checks, where appropriate, to make sure a log channel/category has 
not been disabled before attempting to write to it.

llvm-svn: 117715

the ARMExpandPseudos pass rather than during the asm lowering.

llvm-svn: 117714

Update testcase since we're no longer doing the constant forwarding inline with correlated value propagation.

llvm-svn: 117712

llvm-svn: 117711

failure for llvm-gcc on arm fast isel.

llvm-svn: 117710

Give up on doing in-line instruction simplification during correlated value propagation.  Instruction simplification
needs to be guaranteed never to be run on an unreachable block.  However, earlier block simplifications may have
changed the CFG to make block that were reachable when we began our iteration unreachable by the time we try to
simplify them. (Note that this also means that our depth-first iterators were potentially being invalidated).

This should not have a large impact on code quality, since later runs of instcombine should pick up these simplifications.
Fixes PR8506.

llvm-svn: 117709

llvm-svn: 117708

handle it in the asm lowering.

llvm-svn: 117707

an #ifndef.

llvm-svn: 117706

    rdar://problem/8584431 Assert in clang while evaluating expression

llvm-svn: 117705

llvm-svn: 117704