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llc -shed=none asserts in LVA #1231

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llvmbot opened this issue Aug 1, 2006 · 4 comments
Closed

llc -shed=none asserts in LVA #1231

llvmbot opened this issue Aug 1, 2006 · 4 comments
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bugzilla Issues migrated from bugzilla compile-fail Use [accepts-invalid] and [rejects-valid] instead tools:llc

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@llvmbot
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llvmbot commented Aug 1, 2006

Bugzilla Link 859
Resolution FIXED
Resolved on Mar 06, 2010 13:59
Version trunk
OS MacOS X
Attachments simple c "main" program to reproduce problem
Reporter LLVM Bugzilla Contributor
CC @lattner

Extended Description

Running any .bc file through llc with the null (BFS) scheduler causes an assertion in LVA.

LiveVariables.cpp:126: failed assertion `VRInfo.DefInst && "Register use before def!"'

or

LiveInterval.cpp:283: failed assertion `B->end <= Start && "Cannot overlap two LiveRanges with differing
ValID's" " (did you def the same reg twice in a MachineInstr?)"'

Are the two I've seen.
@lattner
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lattner commented Aug 3, 2006

Jim, can you take a look at this? you wrote the bfs scheduler, right?

Thanks,

-Chris

@llvmbot
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llvmbot commented Aug 3, 2006

Seems simple/none/nointer/list-td all produce the same problem.

@lattner
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lattner commented Aug 17, 2006

Is this fixed?

@llvmbot
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llvmbot commented Aug 18, 2006

Copy the liveins for the first block.

Regression test 2006-07-03-schedulers.ll added.

@llvmbot llvmbot transferred this issue from llvm/llvm-bugzilla-archive Dec 3, 2021
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bugzilla Issues migrated from bugzilla compile-fail Use [accepts-invalid] and [rejects-valid] instead tools:llc
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