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[AMDGPU] Divergence driven ISel. Assign register class for cross block…

Description

[AMDGPU] Divergence driven ISel. Assign register class for cross block values according to the divergence.

Details: To make instruction selection really divergence driven it is necessary to assign
         the correct register classes to the cross block values beforehand. For the divergent targets
         same value type requires different register classes dependent on the value divergence.

Reviewers: rampitec, nhaehnle

Differential Revision: https://reviews.llvm.org/D59990

This commit was reverted because of the build failure.
The reason was mlformed patch.
Build failure fixed.

Details

Committed
alex-tMay 26 2019, 1:33 PM
Parents
rL361740: [MCA][Scheduler] Improved critical memory dependency computation.
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