https://llvm.org/bugs/show_bug.cgi?id=28464
Bug ID: 28464
Summary: Update live range properly after dummy instructions in
DeadRemat being inserted
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: Register Allocator
Assignee: unassignedb...@nondot.org
Reporter: w...@google.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
Now we don't have proper live interval update after dummy instructions in
DeadRemat being inserted. It hasn't caused big trouble because
isTriviallyReMaterializable restricts the formats of rematerializable
instruction (D19486). If someday we relax the limitation in
isTriviallyReMaterializable and allow more complex instructions to be
rematerializable, the problem will surface.
File this bug as a reminder to find a proper fix to the live interval update
problem.
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