[LLVMdev] "Cannot call createPass on PassInfo without default ctor!"

Edmund Grimley-Evans Edmund.Grimley-Evans at arm.com
Fri Jul 23 07:02:24 PDT 2010

While trying to add a pass to the ARM back end I'm getting quite a lot of this assertion failure:

Pass.cpp:255: llvm::Pass* llvm::PassInfo::createPass() const: Assertion `NormalCtor && "Cannot call createPass on PassInfo without default ctor!"' failed.

A simple way to get it is to add two lines to ARMTargetMachine.cpp:

#include "llvm/Transforms/Scalar.h"



in addInstSelector just before this line:

  PM.add(createARMISelDag(*this, OptLevel));

Then run anything through the ARM back end, for example:

clang -cc1 -triple thumbv7-eabi -O3 -target-cpu cortex-a8 x.c -S -o x.s

The interesting thing is that the assertion failure doesn't happen during the call to createSinkingPass(), which I added, but during the call to createARMISelDag in the following line.

Can anyone tell me what's going on here?

(I've also tried adding the Hello pass, with the same result.)


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