[RFA/ARM] Fix recognition of Neon instruction shapes.

[Matthew Gretton-Dann]

The attached patch fixes how Neon instruction shapes are recognised.

Currently neon_select_shape will recognise the following instruction as
NS_DF instead of rejecting it:
    vcvt.f64.s32 d0, s0, #11

This is because the recognition checks that the first operands match the
'shape' for NS_DF, but doesn't check that there are no operands
following.

Tested on arm-none-eabi.  This shows regressions which are fixed by the 
previously posted patch at 
http://sourceware.org/ml/binutils/2011-12/msg00079.html.

OK?

gas/ChangeLog:

2011-12-07  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>

	* config/tc-arm.c (ARM_IT_MAX_OPERANDS): New define.
	(arm_it): Use ARM_IT_MAX_OPERANDS.
	(neon_select_shape): Ensure we have matched all	operands.

gas/testsuite/ChangeLog:

2011-12-07  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>

	* gas/arm/neon-suffix-bad.l: Add testcase.
	* gas/arm/neon-suffix-bad.s: Likewise.

Thanks,

Matt

-- 
Matthew Gretton-Dann
Principal Engineer, PD Software - Tools, ARM Ltd
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