https://llvm.org/bugs/show_bug.cgi?id=26572
Bug ID: 26572
Summary: [GlobalISel] Generic virtual registers have nullptr as
register class
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: GlobalISel
Assignee: unassignedb...@nondot.org
Reporter: qcolom...@apple.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
As r260474, generic virtual registers have not a register class. We may want
to change that. For instance, if we want to use all the methods from
TargetRegisterInfo with generic virtual registers, we need to either have some
sort of generic register classes that do what we want, or teach those methods
how to deal with nullptr register class.
Although the latter seems easy enough to do, we may still want to differenciate
generic register classes from nullptr to catch cases where nullptr gets
introduced by a bug of some sort.
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