Tail duplication should zap a copy it inserted for SSA update if the copy is the only use of its source.

llvm-svn: 91390

llvm-svn: 91381

llvm-svn: 91380

llvm-svn: 91379

llvm-svn: 91378

llvm-svn: 91377

$ svn merge -c -91161 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r91161 into '.':
U    lib/CodeGen/BranchFolding.cpp
U    lib/CodeGen/MachineBasicBlock.cpp
$ svn merge -c -91113 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r91113 into '.':
G    lib/CodeGen/MachineBasicBlock.cpp
$ svn merge -c -91101 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r91101 into '.':
U    include/llvm/CodeGen/MachineBasicBlock.h
G    lib/CodeGen/MachineBasicBlock.cpp
$ svn merge -c -91092 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r91092 into '.':
G    include/llvm/CodeGen/MachineBasicBlock.h
G    lib/CodeGen/MachineBasicBlock.cpp

llvm-svn: 91376

llvm-svn: 91371

llvm-svn: 91362

those enum values is less common.

llvm-svn: 91361

depends on.

llvm-svn: 91360

llvm-svn: 91356

Bill for spotting this!

llvm-svn: 91355

llvm-svn: 91352

between BR_JTr and STREXD.

llvm-svn: 91339

but we need it to actually be 4-bytes in the FDE.

llvm-svn: 91337

llvm-svn: 91333

llvm-svn: 91329

llvm-svn: 91327

llvm-svn: 91321

llvm-svn: 91319

Here's the diagnostic from clang:

/Volumes/Data/dgregor/Projects/llvm/lib/Target/CppBackend/CPPBackend.cpp:989:23: warning: 'gv' is always NULL in this context
        printConstant(gv);
                      ^
1 diagnostic generated.

llvm-svn: 91318

llvm-svn: 91316

llvm-svn: 91313

llvm-svn: 91312

llvm-svn: 91310

llvm-svn: 91307

llvm-svn: 91305

characters in them, in which case the grep will just return 'Binary file
matches' and the whole thing falls over.

llvm-svn: 91302

llvm-svn: 91301

IVUses list in releaseMemory().

llvm-svn: 91296

condition was inverted when the code was converted to contains().

llvm-svn: 91295

llvm-svn: 91293

llvm-svn: 91291

the ScalarEvolution pointer into the functions which need it.

llvm-svn: 91289

llvm-svn: 91288

llvm-svn: 91287

former was just exposing a LoopInfoBase implementation detail.

llvm-svn: 91286

llvm-svn: 91284

llvm-svn: 91283