If two-address def is dead and the instruction does not define other registers, and it doesn't produce side effects, just delete the instruction.

llvm-svn: 65218

Teach LSR sink to sink the immediate portion of the common expression back into uses if they fit in address modes of all the uses.

llvm-svn: 65215

llvm-svn: 65213

llvm-svn: 65212

llvm-svn: 65211

pointer types.

llvm-svn: 65210

as legality.  Make load sinking and gep sinking more careful: we only
do it when it won't pessimize loads from the stack.  This has the added
benefit of not producing code that is unanalyzable to SROA.

llvm-svn: 65209

llvm-svn: 65208

llvm-svn: 65207

prologue/epilogue.

llvm-svn: 65206

type.

llvm-svn: 65205

 - PR3629.

llvm-svn: 65203

* Linters now return their information instead of printing it, to
  enable easier unittesting
* Added support for finding tabs in files, added to C++ linter

llvm-svn: 65202

that checks whether it's safe to transform a store of a bitcast
value into a store of the original value.

llvm-svn: 65201

system header.
 - Prevents a codegen crash when anything used anything in tgmath! :)

llvm-svn: 65200

llvm-svn: 65199

llvm-svn: 65198

llvm-svn: 65197

llvm-svn: 65196

to being allocated from the same bumpptr that the MacroInfo objects 
themselves are.

This speeds up -Eonly cocoa.h pth by ~4%, fsyntax-only is barely measurable.

llvm-svn: 65195

llvm-svn: 65187

are deleting; otherwise, everything ends up on a single line.

llvm-svn: 65185

for length and for trailing whitespace; otherwise, the whitespace themselves
will also be removed.

llvm-svn: 65182

* Alphabetized #includes
* Removed trailing whitespace
* Wrapped or shortened lines over 80 chars

llvm-svn: 65181

function. Emitting another label after the prologue messes up the debugging. We
are doing that because the first DebugLoc object it sees is different from the
previous, which was nothing. Check for this situation, and don't emit one if
it's the first.

llvm-svn: 65180

llvm-svn: 65179

addresses, part 1. This fixes an obvious logic bug. Previously if the only
in-loop use is a PHI, it would return AllUsesAreAddresses as true.

llvm-svn: 65178

llvm-svn: 65173

with new/delete.  With disable-free, this reduces the number of 4/8 byte
mallocs from 4793/1541 to 865/456 and also drops other sizes as well.

This is a very small perf win, nothing major.

llvm-svn: 65171

llvm-svn: 65170

llvm-svn: 65169

but don't start using it yet.  Renamed some methods to be more consistent.

llvm-svn: 65168

llvm-svn: 65167

llvm-svn: 65166

into a new shared ObjCListBase class.

llvm-svn: 65164

vanilla reverse-BFS followed by a forward-DFS instead of resulting to strange
histrionics (whose purpose I can no longer remember) in the reverse-BFS stage.
This fixes an assertion failure in BugReporter due to edge cases where no root
was being hit in the reverse-BFS phase.

llvm-svn: 65160

llvm-svn: 65159

llvm-svn: 65158

llvm-svn: 65157

before the dtor.

llvm-svn: 65156