Matthias Braun 55bc9b3f9e TargetInstrInfo: Change duplicate() to work on bundles. ...

Adds infrastructure to clone whole instruction bundles rather than just
single instructions. This fixes a bug where tail duplication would
unbundle instructions while cloning.

This should unbreak the "Clang Stage 1: cmake, RA, with expensive checks
enabled" build on greendragon. The bot broke with r311139 hitting this
pre-existing bug.

A proper testcase will come next.

llvm-svn: 311511

2017-08-22 23:56:30 +00:00

37 KiB

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