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Hi, I’m writing a loop-free LLVM pass, my thought is to track if the value inside the loop is changed, so I look up the Instruction StoreInst first and try to get its value in a set. I checked getValueOperand(), getValueName() in the API document but unfortunately they failed the compilation. if (isa<StoreInst>(I)){ Value* v = I.getOperand(0); Instruction* op1 =

Hi, I wonder is there any way to select a subset useful variables from a large data set of variables to build a linear function with a single y. I know some methods without validation in the selection procedure. I want to know is there any way to do effectively with validation? thanks! Zhizhong [[alternative HTML version deleted]]

On Fri, Mar 9, 2018 at 9:18 AM, Zhou Zhizhong via llvm-dev <llvm-dev at lists.llvm.org> wrote: > Hi, > > I’m writing a loop-free LLVM pass, my thought is to track if the value inside the loop is changed, so I look up the Instruction StoreInst first and try to get its value in a set. I checked getValueOperand(), getValueName() in...

...v1'. What should be an '->' is just a '-'. You also have a variable in your print called 'op' but that's not declared in your code. Also the result of dyn_cast should always be checked for null before using the result. ~Craig On Fri, Mar 9, 2018 at 9:18 AM, Zhou Zhizhong via llvm-dev < llvm-dev at lists.llvm.org> wrote: > Hi, > > I’m writing a loop-free LLVM pass, my thought is to track if the value > inside the loop is changed, so I look up the Instruction StoreInst first > and try to get its value in a set. I checked getValueOperand(), >...

Hi all, Consider a simple ll code: %2 = load i32* %y, align 4 I intend to get the memory address of %2. if(isa<loadInst>(I)){ // variable name:y value v = I.getOperand(0); // ? I shows the entire instruction, not %2, then I.getName() would print an empty space which is %2, but I can’t get the memory when dereferencing it errs()<< *&(I.getName())<<"\n”; } error: