[PATCH] Enable partial update depency breaking for A15

[Silviu Baranga]

Hi,

Attached is a patch to enable the partial update dependency breaking
mechanism
for CortexA15. To do this we also need to enable the ExecutionDependencyFix
pass
and disable the domain changes for VMOVS/VMOVRS/VMOVSR.

The patch also fixes a bug when getting the update clearance for VLD1LN32d
(The input
DPR operand number should be 3 not 1. The operand with index 1 is a GPR).
This was
preventing dependency breakers for being added for VLD1LN32d.

The patch also adds regression tests for the change.

Please review!

Thanks,
Silviu

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