Get rid of the separate opcodes for the Darwin versions of tBL, tBLXi, and tBLXr, using pseudo-instructions to lower to the single final opcode.  Update the ARM disassembler for this change.

llvm-svn: 135319

llvm-svn: 135287

MSVC decorates (and distinguishes) "const" in mangler. It brought linkage error between "extern const" declarations and definitions.

llvm-svn: 135269

- The actual values are from the MCOI::OperandType enum.
- Teach tblgen to read it from the instruction definition.
- This is a better implementation of the hacks in edis.

llvm-svn: 135197

registeration and creation code into XXXMCDesc libraries.

llvm-svn: 135184

conceptually have nuls in it.

llvm-svn: 135165

llvm-svn: 135154

Add a target-indepedent entry to MCInstrDesc to describe the encoded size of an opcode.  Switch ARM over to using that rather than its own special MCInstrDesc bits.

llvm-svn: 135106

Rename struct Init to class Init for consistency and in preparation
for making Init a FoldingSetNode.

llvm-svn: 135097

llvm-svn: 135092

The immediate is of limited range and the operand type should reflect that.

llvm-svn: 135066

in multiple buildbots.

llvm-svn: 134936

Respond to some feedback asking for a name change.

llvm-svn: 134921

llvm-svn: 134917

Update the tag for Init to match how it's defined.

llvm-svn: 134908

Manage Inits in a FoldingSet.  This provides several benefits:

- Memory for Inits is properly managed

- Duplicate Inits are folded into Flyweights, saving memory

- It enforces const-correctness, protecting against certain classes
  of bugs

The above benefits allow Inits to be used in more contexts, which in
turn provides more dynamism to TableGen.  This enhanced capability
will be used by the AVX code generator to a fold common patterns
together.

llvm-svn: 134907

The enum names as well as order (i.e. value)
had skewed, which means that consumers of the
tablegen-ed table would see different values than
intended. Make both files have a superset of enums,
and add classification as needed for numMCOperands.

Reviewed by Owen Anderson

llvm-svn: 134905

  and MCSubtargetInfo.
- Added methods to update subtarget features (used when targets automatically
  detect subtarget features or switch modes).
- Teach X86Subtarget to update MCSubtargetInfo features bits since the
  MCSubtargetInfo layer can be shared with other modules.
- These fixes .code 16 / .code 32 support since mode switch is updated in
  MCSubtargetInfo so MC code emitter can do the right thing.

llvm-svn: 134884

llvm-svn: 134809

llvm-svn: 134725

llvm-svn: 134709

This allows the (many) pseudo-instructions we have that map onto a single
real instruction to have their expansion during MC lowering handled
automatically instead of the current cumbersome manual expansion required.
These sorts of pseudos are common when an instruction is used in situations
that require different MachineInstr flags (isTerminator, isBranch, et. al.)
than the generic instruction description has. For example, using a move
to the PC to implement a branch.

llvm-svn: 134704

- Each target asm parser now creates its own MCSubtatgetInfo (if needed).
- Changed AssemblerPredicate to take subtarget features which tablegen uses
  to generate asm matcher subtarget feature queries. e.g.
  "ModeThumb,FeatureThumb2" is translated to
  "(Bits & ModeThumb) != 0 && (Bits & FeatureThumb2) != 0".

llvm-svn: 134678

llvm-svn: 134606

So users of a CGI don't have to look up the value directly from the original
Record; just like the rest of the convenience values in the class.

llvm-svn: 134576

llvm-svn: 134563

For now this is distinct from isCodeGenOnly, as code-gen-only
instructions can (and often do) still have encoding information
associated with them. Once we've migrated all of them over to true
pseudo-instructions that are lowered to real instructions prior to
the printer/emitter, we can remove isCodeGenOnly and just use isPseudo.

llvm-svn: 134539

llvm-svn: 134498

llvm-svn: 134457

llvm-svn: 134324

llvm-svn: 134259

  itineraries.
- Refactor TargetSubtarget to be based on MCSubtargetInfo.
- Change tablegen generated subtarget info to initialize MCSubtargetInfo
  and hide more details from targets.

llvm-svn: 134257

llvm-svn: 134244

It's just a call to a special helper function. Get rid of the T2 variant
entirely, as it's identical to the Thumb1 version.

llvm-svn: 134178

It's just a tPOP instruction with additional code-gen properties, so it
doesn't need encoding information.

llvm-svn: 134172

be the first encoded as the first feature. It then uses the CPU name to look up
features / scheduling itineray even though clients know full well the CPU name
being used to query these properties.

The fix is to just have the clients explictly pass the CPU name!

llvm-svn: 134127

Unlike Thumb1, Thumb2 does not have dedicated encodings for adjusting the
stack pointer. It can just use the normal add-register-immediate encoding
since it can use all registers as a source, not just R0-R7. The extra
instruction definitions are just duplicates of the normal instructions with
the (not well enforced) constraint that the source register was SP.

llvm-svn: 134114

They've been pseudos for a while now, so the decoder will never see
them in the first place.

llvm-svn: 134101

The tSpill and tRestore instructions are just copies of the tSTRspi and
tLDRspi instructions, respectively. Just use those directly instead.

llvm-svn: 134092

Change AsmName's type from StringRef to std::string. AsmName was pointing to a temporary string object that was destroyed. This is undefined behavior and MSVC didn't like it.

This fixes over 300+ failing tests on MSVC.
Credit for this fix goes to chapuni.

llvm-svn: 134064