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getinstrcycles
2015 Feb 04
2
[LLVMdev] Question on Machine Combiner Pass
...f APIs for the current and new instructions:
For new instruction we use:
unsigned NewRootDepth = getDepth(InsInstrs, InstrIdxForVirtReg, BlockTrace);
unsigned NewRootLatency = getLatency(Root, NewRoot, BlockTrace);
While for the current instruction we use:
unsigned RootDepth = BlockTrace.getInstrCycles(Root).Depth;
unsigned RootLatency = TSchedModel.computeInstrLatency(Root);
This is related to the following commit:
commit e4fa341dde3c9521b7f11bd53ecdcbeb3f8fcbda
Author: Gerolf Hoflehner <ghoflehner at apple.com <mailto:ghoflehner at apple.com>
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Date: Thu Aug 7 21:40:58 2...