llvm-svn: 79397

llvm-svn: 79388

when trying to run opt in parallel.  This lets parallel opt crunch 403.gcc in about a third
of the time.

llvm-svn: 79387

llvm-svn: 79386

 - The base class implementation is correct.

llvm-svn: 79385

before performing optimizations based on constant string values.

llvm-svn: 79384

just falling through the end.

llvm-svn: 79383

buffer.

llvm-svn: 79382

SRA_PARTS, as is done for SRL, SHL, and SRA.

llvm-svn: 79380

 - Kill off begin(), end(), and iterator. It isn't clear what these
   mean. Instead provide getBufferStart(), which can be used with
   GetNumBytesInBuffer to the same effect.

 - Update ComputeColumn to take arguments for the buffer to scan, this
   simplifies the implementation of write_impl substantially.

 - This should also fix possible problems with the scanning pointer pointing
   outside of the current raw_ostream buffer.

llvm-svn: 79379

llvm-svn: 79378

Add patterns and instruction encoding information.
Add custom lowering to deal with hardwired return register of
uncertain type (xmm0).

llvm-svn: 79377

llvm-svn: 79376

div/mods in 32-bits.

llvm-svn: 79375

- Drop the Candidates argument and fix all callers. Now that RegScavenger
  tracks available registers accurately, there is no need to restict the
  search.
- Make sure that no aliases of the found register are in use. This was a potential bug.

llvm-svn: 79369

llvm-svn: 79368

allow underlying stream classes to decline buffering. After
calling SetBuffered(), re-check whether the stream is Unbuffered
in order to handle the case where the underlying stream has
declined buffering.

llvm-svn: 79362

llvm-svn: 79361

llvm-svn: 79359

Make various changes suggested by Chris.

llvm-svn: 79358

llvm-svn: 79357

llvm-svn: 79356

Privatize the ValueHandle global map.  Because this is used so heavily throughout the code base, locking all accesses to
it is not practical performance-wise.

llvm-svn: 79355

llvm-svn: 79354

llvm-svn: 79353

of LDFLAGS.

llvm-svn: 79352

llvm-svn: 79351

llvm-svn: 79350

llvm-svn: 79348

llvm-svn: 79347

llvm-svn: 79346

llvm-svn: 79345

TargetData is not present. It still uses TargetData when available.
This generalization also fixed some limitations in the TargetData
case; the attached testcase covers this.

llvm-svn: 79344

llvm-svn: 79343

required on some platforms for building shared libraries that link to
the LLVM libraries.

llvm-svn: 79339

remove RemoveDuplicateSuccessor, as it is no longer necessary, and because
it breaks assumptions made in
MachineBasicBlock::isOnlyReachableByFallthrough.

Convert test/CodeGen/X86/omit-label.ll to FileCheck and add a testcase
for PR4732.

test/CodeGen/Thumb2/thumb2-ifcvt2.ll sees a diff with this commit due to
it being bugpoint-reduced to the point where it doesn't matter what the
condition for the branch is.

Add some more interesting code to
test/CodeGen/X86/2009-08-06-branchfolder-crash.ll, which is the testcase
that originally motivated the RemoveDuplicateSuccessor code, to help
verify that the original problem isn't being re-broken.

llvm-svn: 79338

unruly indices for arrays that are members of structs.

llvm-svn: 79337

Patch by Dmitry Gorbachev!

llvm-svn: 79334

llvm-svn: 79333

llvm-svn: 79325