[ARM] Replace ARMISD::RBIT with ISD::BITREVERSE

Description

[ARM] Replace ARMISD::RBIT with ISD::BITREVERSE

ISD::BITREVERSE matches "rbit" completely, so remove ARMISD::RBIT and mark ISD::BITREVERSE as legal, adding a test for lowering.

Details

Committed
jamesmNov 13 2015, 8:05 AM
Parents
rL253046: Deduplicate three identical copies of isExplicitInstantiationOrSpecialization…
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