CodeGenInstruction::FlattenAsmStringVariants method.  Use it
to simplify the code in AsmWriterInst, which now no longer 
needs to worry about variants.

llvm-svn: 117886

this can start rejecting instructions.

llvm-svn: 117885

various X86 and ARM instructions that are bitten by this as isCodeGenOnly,
as they are.

llvm-svn: 117884

let Constraints = "$val = $dst", Defs = [EFLAGS] in, isCodeGenOnly = 1 {

we now get:

X86InstrCompiler.td:653:52: error: Expected class, def, defm, multiclass or let definition
let Constraints = "$val = $dst", Defs = [EFLAGS] in, isCodeGenOnly = 1 {
                                                   ^

llvm-svn: 117863

Use this to make the X86 and ARM targets set isCodeGenOnly=1 
automatically for their instructions that have Format=Pseudo,
resolving a hack in tblgen.

llvm-svn: 117862

and make it a hard error for instructions to not have an asm string.
These instructions should be marked isCodeGenOnly.

llvm-svn: 117861

got a dulicated line).

llvm-svn: 117860

llvm-svn: 117859

Instead of silently ignoring these instructions, emit a hard error and
force the target author to either refactor the target or mark the 
instruction 'isCodeGenOnly'.

Mark a few instructions in ARM and MBlaze as isCodeGenOnly the are 
doing this.

llvm-svn: 117858

AsmMatcherInfo so we don't have two places that know the
feature -> enum mapping.  No functionality change.

llvm-svn: 117845

that are only used by MnemonicAliases will be found.

llvm-svn: 117844

'tomatch' code contains \n's.

llvm-svn: 117843

cases that are currently exercised).  Thanks to Frits van Bommel for
the great review!

llvm-svn: 117840

"In32BitMode" and "In64BitMode" into tblgen, allow any
predicate that inherits from AssemblerPredicate.

llvm-svn: 117831

directives, allowing things like this:

def : MnemonicAlias<"pop", "popl">, Requires<[In32BitMode]>;
def : MnemonicAlias<"pop", "popq">, Requires<[In64BitMode]>;

Move the rest of the X86 MnemonicAliases over to the .td file.

llvm-svn: 117830

llvm-svn: 117828

with a useful error message instead of having tblgen explode with an 
assert.

llvm-svn: 117827

inline into MatchInstructionImpl.

llvm-svn: 117826

just remaps one mnemonic to another.  Convert a few of the X86 aliases
from .cpp to .td code.

llvm-svn: 117815

llvm-svn: 117724

(like ARM) correctly.  With this change, we can now match "bx lr"
because we recognize lr as a register.

llvm-svn: 117606

complex load / store addressing mode) when they have higher cost and
when they have more than one use.

llvm-svn: 117509

for specifying fractional bits for fixed point conversions.

llvm-svn: 117501

llvm-svn: 117485

explicit about the operands. Split out the different variants into separate
instructions. This gives us the ability to, among other things, assign
different scheduling itineraries to the variants. rdar://8477752.

llvm-svn: 117409

llvm-svn: 117208

llvm-svn: 117206

llvm-svn: 117197

llvm-svn: 117196

llvm-svn: 117195

llvm-svn: 117111

llvm-svn: 116899

llvm-svn: 116682

llvm-svn: 116588

and handle the operand explicitly. Flesh out encoding information. Add an
explicit disassembler testcase for the instruction.

llvm-svn: 116432

llvm-svn: 116421

operand values. This is useful for operands which require additional trickery
to encode into the instruction. For example, the ARM shifted immediate and
shifted register operands.

llvm-svn: 116353

llvm-svn: 116282

llvm-svn: 116243

map one-to-one with the CodeGenInstruction operand number.

llvm-svn: 116238