[LLVMdev] How to disable pass grouping(scheduling)

[kecheng at cecs.pdx.edu]

Hi all,

Llvm can automatically group a list passes. I want to do some  
experiment to see the difference between grouping and non-grouping  
execution.
Considering the following example, if I want to apply transformation  
A, B and C. The execution order is:
   A.doInitialization();
   B.doInitialization();
   C.doInitialization();
   A.runOnFunction();
   B.runOnFunction();
   C.runOnFunction();
   A.doInitialization();
   B.doInitialization();
   C.doInitialization();

Is it possible to disable the grouping? Make it execute as:

   A.doInitialization();
   A.runOnFunction();
   A.doInitialization();
   B.doInitialization();
   B.runOnFunction();
   B.doInitialization();
   C.doInitialization();
   C.runOnFunction();
   C.doInitialization();

Thanks,

Kecheng