[csl-arm] V2DI NEON fixes

[Paul Brook]

The attached patch fixes problems with V2DI vector modes. The patterns and 
expanders were somewhat inconsistent about where V2DI was valid leading to 
ICEs and missed optimization.

Tested with cross to arm-none-eabi.
Applied to branches/csl/sourcerygxx-4_1

Paul

2006-10-17  Paul Brook  <paul@codesourcery.com>

	gcc/
	* config/arm/vec-common.md (VALLW, VINTW): New mode macros.
	(mul<mode>3, smin<mode>3, umin<mode>3, smax<mode>2, umax<mode3>):
	Use them.
	* config/arm/neon.md (VDQ, VDQI): Add V2DI.
	(QDQW, VDQIW): New mode macros.
	(V_suf64): Only suffix DImode.
	(vec_setv2di, vec_extractv2di): New insns.
	(ior<mode>3_64): Rename to iordi3_neon.
	(and<mode>3_64): Rename to anddi3_neon.
	(orn<mode>3_64): Rename to orndi3_neon.
	(bic<mode>3_64): Rename to bicdi3_neon.
	(xor<mode>3_64): Rename to xordi3_neon.
	(abs<mode2>, neg<mode>2, umin<mode>3, umax<mode>3, smin<mode>3,
	smax<mode>3, ashl<mode>3, ashr<mode>3, lshr<mode>3, neon_vhadd<mode>,
	neon_vmul<mode>, neon_vmla<mode>, neon_vmls<mode>, neon_vqsub<mode>,
	neon_vhsub<mode>, neon_vceq<mode>, neon_vcgt<mode>, neon_vtst<mode>,
	neon_vabd<mode>, neon_vaba<mode>, neon_vmax<mode>, neon_vmin<mode>,
	neon_vpadd<mode>, neon_vpaddl<mode>, neon_vabs<mode>,
	neon_vqabs<mode>, neon_vqneg<mode>, neon_vcls<mode>, neon_vclz<mode>,
	neon_vmvn<mode>, neon_vdup_n<mode>, neon_vtrn<mode>_internal,
	neon_vtrn<mode>, neon_vzip<mode>_internal, neon_vzip<mode>,
	neon_vuzp<mode>_internal, neon_vuzp<mode>): Use VDQW and VDQIW.
	
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