Jonas Paulsson b7b170c9b4 [MachineVerifier] Improve verification of live-in lists. ...

MachineVerifier::visitMachineFunctionAfter() is extended to check the
live-through case for live-in lists. This is only done for registers without
aliases and that are neither allocatable or reserved, such as the SystemZ::CC
register.

The MachineVerifier earlier only catched the case of a live-in use without
an entry in the live-in list (as "using an undefined physical register").

A comment in LivePhysRegs.h has been added stating a guarantee that
addLiveOuts() can be trusted for a full register both before and after
register allocation.

Review: Quentin Colombet
https://reviews.llvm.org/D68267

2019-11-04 16:22:00 +01:00

104 KiB

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