R600: Add BFE DAG combines

Matt Arsenault arsenm2 at gmail.com
Mon May 12 11:46:39 PDT 2014

On Apr 25, 2014, at 1:57 PM, Matt Arsenault <arsenm2 at gmail.com> wrote:

> These patches allow some simplifications of BFE nodes. I just noticed the instruction patterns aren’t actually trying to match the BFE pattern, but that can be fixed later
> <0001-R600-Implement-computeMaskedBitsForTargetNode-for-BF.patch><0002-R600-Implement-ComputeNumSignBitsForTargetNode-for-B.patch><0003-R600-Add-dag-combine-for-BFE.patch><0004-R600-Try-to-convert-BFE-back-to-standard-bit-ops-whe.patch>


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