Bjorn Pettersson 63c9fe2db5 [CodeGen] Fix for MachineBasicBlock::rfindDebugLoc(instr_rend()) ...

Make sure we do not crash in rfindDebugLoc when starting at
instr_rend(). Solution is to see it as we start one MI before the
first MI, so we can start searching forward at instr_begin()
instead.

This behavior is similar to how findPrevDebugLoc(instr_end()) works.

Differential Revision: https://reviews.llvm.org/D150577

2023-05-25 14:48:52 +02:00

59 KiB

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