https://bugs.llvm.org/show_bug.cgi?id=47737
Bug ID: 47737
Summary: Port LoopInterchange to new pass manager
Product: new-bugs
Version: unspecified
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: new bugs
Assignee: unassignedb...@nondot.org
Reporter: aeuba...@google.com
CC: alina.sbir...@gmail.com, florian_h...@apple.com,
htmldevelo...@gmail.com, llvm-bugs@lists.llvm.org
Blocks: 46651
LoopInterchange isn't ported to the new pass manager yet.
I tried a fairly basic approach and ran into issues with LoopInterchange
requiring DependenceAnalysis. DA is a function analysis and in the NPM, loop
passes cannot eagerly run function analyses. But even if we require DA to have
been run before running LoopInterchange, we hit
Assertion failed: !Result->invalidate(IR, PA, Inv) && "Cached result cannot be
invalidated", file ../../llvm/include\llvm/IR/PassManager.h, line 823
A loop pass cannot invalidate a function analysis (see
https://reviews.llvm.org/D72893).
Referenced Bugs:
https://bugs.llvm.org/show_bug.cgi?id=46651
[Bug 46651] Fix all opt tests to work under NPM
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