static variables in the IR

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#1

How can I check if an operand is a static variable in the IR?
I've read that their linkage type should be marked as "internal" in the .s file, but I can't find a way to test if an Instruction has static variables as operands.
Can you help me?

Thank you in advance,

Niko

#2

Hi Niko,

How can I check if an operand is a static variable in the IR?

get the operand, for example:
   Value *Op = Instr->getOperand(0);
You probably want to get rid of any type casts:
   Op = Op->stripPointerCasts();
You can test if it is a global variable using:
   if (isa<GlobalVariable>(Op)) { ... }
If it is, you can cast it to a global variable and test the linkage:
     GlobalVariable *GV = cast<GlobalVariable>(Op);
     if (GV->hasLocalLinkage()) { ... }

Ciao, Duncan.