Help with Assertion failures

Question

Hello all,
I'm trying to instrument some code, which involves creation of new temporary and assigning another variableOperand as it is to the temporary, as well as adding something to that variableOperand and assigning that to the newly created temporary. The instrumentation also introduces some branches.
I'm getting the following error in the process. Can somebody please suggest or give and idea of where I might be wrong.

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Phoenix Assertion Failure: d:\enlistments\sdk_june08\src\targets\architectures\x86\function-linkage.cpp, Line 374
  Unreached
  in (Function number 2) _main [line 28] during Lower
  in (Module) ../testFiles/testFunc.c
Phoenix Assertion Failure: d:\enlistments\sdk_june08\src\phx\ir\ir.cpp, Line 10578
  reg != nullptr : SinkDestinationToRegister should only be used with a valid register
  in (Function number 2) _main [line 28] during Lower
  in (Module) ../testFiles/testFunc.c
Phoenix Assertion Failure: d:\enlistments\sdk_june08\src\phx\ir\ir-constructor.cpp, Line 484
  variableOperand->IsTemporaryRegister
  in (Function number 2) _main [line 28] during Lower
  in (Module) ../testFiles/testFunc.c
Phoenix Assertion Failure: d:\enlistments\sdk_june08\src\targets\architectures\x86\lower.cpp, Line 515
  Unreached : Unhandled Assign
   tv290-(RegisterCandidate) = ASSIGN t302                                  #28
  in (Function number 2) _main [line 28] during Lower
  in (Module) ../testFiles/testFunc.c
Phoenix Assertion Failure: d:\enlistments\sdk_june08\src\targets\runtimes\base\lower.cpp, Line 1458
  (nextInstruction != nullptr) : Custom processing did not return next instruction to process
  in (Function number 2) _main [line 28] during Lower
  in (Module) ../testFiles/testFunc.c
Phoenix Assertion Failure: d:\enlistments\sdk_june08\src\targets\runtimes\base\lower.cpp, Line 1481
  previousInstruction != nullptr : Lower expansion is skipping instructions
   tv290-(RegisterCandidate) = ASSIGN t302                                  #28
  in (Function number 2) _main [line 28] during Lower
  in (Module) ../testFiles/testFunc.c
Phoenix Assertion Failure: d:\enlistments\sdk_june08\src\targets\runtimes\base\lower.cpp, Line 1546
  newInstruction->IsPseudo || newInstruction->WasLegalized || !newInstruction->IsLir || newInstruction->IsCommon : Customized expansion not f
ull legalized, call Lower->Range
   ESP               = add ESP, 4                                           #28
  in (Function number 2) _main [line 28] during Lower
  in (Module) ../testFiles/testFunc.c
fatal error C1001: An internal error has occurred in the compiler.
(compiler file 'd:\enlistments\sdk_june08\src\clients\c2\c2-diagnostics.cpp', line 704)
Access Violation Fault (instruction at "0x303B99D9" read memory at "0x0000000C")
Internal Compiler Error in c:\Program Files\Phoenix SDK June 2008\bin\debug\x86\cl.exe.  You will be prompted to send an error report to Micr
osoft later.

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Regards,
If If

Answer 1

When (where in the phase list) are you doing instrumentation?

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Architect - Microsoft Phoenix Project

Answer 2

I was doing the instrumentation after CxxIL Reader phase.
The problem was that because my function returned a boolean, I used RegisterCondType for its return value and then used that in the compare instruction as a source. But turns out that the CompareInstruction requires sources to be of IntType.


Regards,
If If