[PATCH i386] Implementation of the pipeline description for bdver1 (Bulldozer processors)

[Fang, Changpeng]

Hi,

Attached is the patch that implements the pipeline description for Bulldozer processors (bdver1).
The implementation is based on the current available information and may subject to change in
the future.

Successful bootstrapping on x86_64-unknown-linux-gnu (Not with -march=bdver1). And the 
patched compiler could successfully build cpu2006 with -O3 -march=bdver1.

Is it OK to c9ommit to trunk?

Thanks,

Changpeng
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