Adrian Prantl 905f2d1ecb Fix LDV InstrRefBasedImpl to not crash when encountering unreachable MBBs. ...

The testcase was delta-reduced from an LTO build with sanitizer
coverage and the MIR tail duplication pass caused a machine basic
block to become unreachable in MIR. This caused the MBB to be invisible
to the reverse post-order traversal used to initialize the MBB <->
RPONumber lookup tables.

rdar://97226240

Differential Revision: https://reviews.llvm.org/D130999

2022-08-03 13:05:05 -07:00

144 KiB

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