For decoding, keep the current behavior of always decoding these as their REP
versions. In the future, this could be improved to recognize the cases where
these behave as XACQUIRE and XRELEASE and decode them as such.

llvm-svn: 184207

llvm-svn: 184206

CodeGen: Have 'this'-returning constructors and destructors to take advantage of the new backend 'returned' attribute.

The backend will now use the generic 'returned' attribute to form tail calls where possible, as well as avoid save-restores of 'this' in some cases (specifically the cases that matter for the ARM C++ ABI).

This patch also reverts a prior front-end only partial implementation of these optimizations, since it's no longer required.

llvm-svn: 184205

llvm-svn: 184204

llvm-svn: 184203

llvm-svn: 184202

llvm-svn: 184201

llvm-svn: 184200

llvm-svn: 184199

llvm-svn: 184198

Transforms will now make changes to headers if header modifications have been
enabled.

FIXME: Only UseNullptr contains a cursory header modification test. Other
transforms should have them too.

llvm-svn: 184197

llvm-svn: 184196

in addition of receiver having static type, but also when
receiver has dynamic type (of 'id' variety) as well as when
receiver is of 'Class' type vareity. // rdar://7853549

llvm-svn: 184195

To make it possible for replacements made to headers as part of transforming
one translation unit to not be visible to the transform of other translation
units, Transform now handles replacement application as part of its
end-of-source handling. Several things were simplified as a result:

- The duplicated code in every transform for applying replacements is now gone
  and replaced with one location in Transform.
- RefactoringTool is no longer used since Transform houses the Replacements
  structure.
- RewriterContainer is now a private implementation detail of Transform (also
  renamed to RewriterManager since its behaviour is slightly different now with
  respect to lifetime of objects).
- There's now no distinction between input and output file state.

Misc notes:

- Interface changes reflected in unit tests.
- Replacements for files other than the main file are assumed to be for headers
  and stored as such.

llvm-svn: 184194

llvm-svn: 184193

The CMake build was still using it because I forgot to s/CLANG/LLVM/ in
the tablegen() call.  The Makefile build is already using llvm-tblgen.

llvm-svn: 184192

llvm-svn: 184191

llvm-svn: 184190

llvm-svn: 184189

llvm-svn: 184188

llvm-svn: 184187

This allows the compiler to see the enum and warn about it. While in here,
fix a switch to not use a default and fix style violations.

llvm-svn: 184186

llvm-svn: 184185

They are actually the same, but ext2_fs.h header is not available in userspace
with newer kernels.

llvm-svn: 184184

Replace hardcoded ioctl request ids with symbolic names.
Disable certain ioctls on platforms where such names are not found in the
system headers.
Fix a bug in ioctl_lookup.
Reenable ioctl test on Mac.

llvm-svn: 184183

When using a positive offset, literal loads where encoded
as if it was negative, because:
- The sign bit was not assigned to an operand
- The addrmode_imm12 operand was not encoding the sign bit correctly

This patch also makes the assembler look at the .w/.n specifier for
loads.

llvm-svn: 184182

llvm-svn: 184181

This fixes two previous issues:
- Negative offsets were not correctly disassembled
- The decoded opcodes were not the right one

llvm-svn: 184180

llvm-svn: 184179

llvm-svn: 184178

llvm-svn: 184177

llvm-svn: 184176

Someone may want to do something crazy, like replace these objects if they
change or something.

No functionality change intended.

llvm-svn: 184175

llvm-svn: 184174

llvm-svn: 184173

llvm-svn: 184172

Some embedded targets use ARM's AAPCS with iOS header files that define size_t
as unsigned long, which conflicts with the usual AAPCS definition of size_t
as unsigned int.

llvm-svn: 184171

These APIs are still used, and the constant APIs are actually really important.

Removing these makes -Wdocumentation more useful.

llvm-svn: 184170

llvm-svn: 184169

llvm-svn: 184168