always be disambiguated as sldtw.  sldtw and sldtq with
a mem operands have the same effect, but sldtw is more
compact.  Force it to sldtw, resolving rdar://8017530

llvm-svn: 113186

llvm-svn: 113184

is busted for all variants, report it as the location.  This allows
us to get the operand right for bugs like:

t.s:3:12: error: invalid operand for instruction
	outb %al, %gs
	          ^

Even though there are reg/imm and reg/reg forms of this instruction.

llvm-svn: 113183

allowing unsigned 8-bit operands.  This fixes rdar://8208481

llvm-svn: 113182

of a mneumonic, report operand errors with better location
info.  For example, we now report:

t.s:6:14: error: invalid operand for instruction
        cwtl $1
             ^

but we fail for common cases like:

t.s:11:4: error: invalid operand for instruction
   addl $1, $1
   ^

because we don't know if this is supposed to be the reg/imm or imm/reg
form.

llvm-svn: 113178

give a more detailed error.  Before:

t.s:11:4: error: unrecognized instruction
   addl $1, $1
   ^
t.s:12:4: error: unrecognized instruction
   f2efqefa $1
   ^

After:

t.s:11:4: error: invalid operand for instruction
   addl $1, $1
   ^
t.s:12:4: error: invalid instruction mnemonic 'f2efqefa'
   f2efqefa $1
   ^

This fixes rdar://8017912 - llvm-mc says "unrecognized instruction" when it means "invalid operands"

llvm-svn: 113176

llvm-svn: 113174

llvm-svn: 113173

llvm-svn: 113172

by doing a binary search over the mnemonic instead of doing a linear
search through all possible instructions.  This implements rdar://7785064

llvm-svn: 113171

MatchInstructionImpl. This makes it easier to read/understand
MatchInstructionImpl.

llvm-svn: 113170

generated matcher, emiting it as a column in the MatchEntry
table instead of forcing it to go through classification and
everything else.  Making it be classified caused tblgen to
produce a ton of one-off classes for each mneumonic.  This
should reduce the size of the generated matcher significantly
while paving the way for future improvements.

llvm-svn: 113169

so only do the N^2 loop with debug mode.

llvm-svn: 113168

llvm-svn: 113167

failed because a subtarget feature was not enabled.  Use this to
remove a bunch of hacks from the X86AsmParser for rejecting things
like popfl in 64-bit mode.  Previously these hacks weren't needed,
but were important to get a message better than "invalid instruction"
when used in the wrong mode.

This also fixes bugs where pushal would not be rejected correctly in
32-bit mode (just pusha).

llvm-svn: 113166

llvm-svn: 113165

llvm-svn: 113164

into the middle of the class, and rework how the different sections of
the generated file are conditionally included for simplicity.

llvm-svn: 113163

llvm-svn: 113160

llvm-svn: 113159

llvm-svn: 113158

llvm-svn: 113157

llvm-svn: 113155

llvm-svn: 113147

llvm-svn: 113146

StringMatcher instead of a linear sequence of memcmps.

llvm-svn: 113145

llvm-svn: 113144

llvm-svn: 113143

copy of a close relative of it.

llvm-svn: 113142

llvm-svn: 113141

"1 strings to match" in a comment, which isn't gramatic.

llvm-svn: 113140

llvm-svn: 113139

out of AsmMatcherEmitter.cpp into its own class.

llvm-svn: 113137

comparing the "llvm." prefix in the memcmp, and not storing it in the string literal.

llvm-svn: 113136

llvm-svn: 113135

in the duplicated block instead of duplicating them.  

Duplicating them into the end of the loop and the preheader 
means that we got a phi node in the header of the loop, 
which prevented LICM from hoisting them.  GVN would
usually come around later and merge the duplicated 
instructions so we'd get reasonable output... except that
anything dependent on the shoulda-been-hoisted value can't
be hoisted.  In PR5319 (which this fixes), a memory value
didn't get promoted.

llvm-svn: 113134

Loop::hasLoopInvariantOperands method. Remove
a useless and confusing Loop::isLoopInvariant(Instruction)
method, which didn't do what you thought it did.

No functionality change.

llvm-svn: 113133

llvm-svn: 113123

pattern, so there is no need to define a matching function.

llvm-svn: 113122

llvm-svn: 113121