It broke the self host and clang-x86_64-darwin10-RA.

llvm-svn: 139259

llvm-svn: 139258

Need branch relocation support to distinguish this encoding from the
16-bit Thumb1 encoding w/o the explicit .w suffix. That comes later, though.

llvm-svn: 139257

llvm-svn: 139256

llvm-svn: 139255

The immediate offset of the non-writeback i8 form (encoding T4) allows
negative offsets only. The positive offset form of the encoding is the
LDRT instruction. Immediate offsets in the range [0,255] use encoding T3
instead.

llvm-svn: 139254

llvm-svn: 139251

Second of a three-patch series aiming to fix MSR/MRS on Cortex-M. This adds predicate checking to the Disassembler.

llvm-svn: 139250

In some cases such as interpreters using indirectbr, the CFG can be very
complicated, and live range splitting may be forced to insert a large
number of phi-defs.  When that happens, traceSiblingValue can spend a
lot of time zipping around in the CFG looking for defs and reloads.

This patch causes more information to be cached in SibValues, and the
cached values are used to terminate searches early.  This speeds up
spilling by 20x in one interpreter test case.  For more typical code,
this is just a 10% speedup of spilling.

llvm-svn: 139247

Fix atomic load and store on x86 to pass -verify-machineinstrs (and possibly fix some subtle bugs involving passes which check mayStore()).

This isn't exactly ideal, but it is good enough for the moment.

llvm-svn: 139245

llvm-svn: 139244

There is no 16-bit wide encoding, so the .w suffix isn't needed (indeed, isn't
documented as allowed). Also add the missing '!' token on the _UPD
variant.

llvm-svn: 139243

Choose 32-bit vs. 16-bit encoding when there's no .w suffix in post-processing
as match classes are insufficient to handle the context-sensitiveness of
the writeback operand's legality for the 16-bit encodings.

llvm-svn: 139242

llvm-svn: 139240

Refactor instprinter and mcdisassembler to take a SubtargetInfo. Add -mattr= handling to llvm-mc. Reviewed by Owen Anderson.

llvm-svn: 139237

duplicate tests are eliminated (for example if the two functions both have
a catch clause catching the same type, ensure the redundant one is removed).
Note that it would probably be safe to say that eh.typeid.for is 'const',
but since two calls to it with the same argument can give different results
(but only if the calls are in different functions), it seems more correct to
mark it only 'pure'; this doesn't get in the way of the optimization.

llvm-svn: 139236

Handle explicit 'ia' suffix via a MnemonicAlias (pre-existing).

llvm-svn: 139234

(not assert) early.

llvm-svn: 139233

llvm-svn: 139232

llvm-svn: 139230

llvm-svn: 139229

Relax the MemOperands on atomics a bit.  Fixes -verify-machineinstrs failures for atomic laod/store on ARM.

(The fix for the related failures on x86 is going to be nastier because we actually need Acquire memoperands attached to the atomic load instrs, etc.)

llvm-svn: 139221

name.

llvm-svn: 139220

While sinking machine instructions, sink matching DBG_VALUEs also otherwise live debug variable pass will drop DBG_VALUEs on the floor.

llvm-svn: 139208

information for older linkers.

llvm-svn: 139206

llvm-svn: 139205

Fixes PR10872 and <rdar://problem/10065079>.

llvm-svn: 139204

llvm-svn: 139202

llvm-svn: 139200

llvm-svn: 139199

llvm-svn: 139194

llvm-svn: 139193

these tests all infinitely recurse, bringing my system down into swapping hell.

llvm-svn: 139192

llvm-svn: 139191

llvm-svn: 139188

handle anything more complex. Fixes PR10383 again!

llvm-svn: 139186

llvm-svn: 139179

llvm-svn: 139177

llvm-svn: 139172

llvm-svn: 139171