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[SCCP] Fold constants as we build them whne visiting cast instructions.

Description

[SCCP] Fold constants as we build them whne visiting cast instructions.

This should be slightly more efficient and could avoid spurious overdefined
markings, as Eli pointed out.

Differential Revision: http://reviews.llvm.org/D22122

Details

Committed
davideJul 8 2016, 12:13 PM
Differential Revision
D22122: [SCCP] Teach the pass about bitcasts
Parents
rL274904: SelectionDAG: Avoid implicit iterator conversions in SelectionDAGISel, NFC
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