llvm dev - May 2018 - Debugging a issue in MachineFrameInfo?

Hi all:
I wrote some IR transform passes that works perfectly fine at IR level and
running through opt -verify on the yielded IR results in no error.
However when I try to compile the transformed IR into object code using llc
Output.ll -filetype=obj , it asserts out with Assertion failed:
(unsigned(ObjectIdx+NumFixedObjects) < Objects.size() &&
"Invalid Object Idx!"), function getObjectAlignment, file
include/llvm/CodeGen/MachineFrameInfo.h, line 424.




I'm currently using LLVM  6.0 release version and it would be great if
someone could point out the correct way to fix this issue


Zhang
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