[LLVMdev] Little Problem about Variable memory allocating way in function
baldrick at free.fr
Sat Apr 21 11:39:41 CDT 2012
Hi Jianfei Hu,
> As I want to generate code for the varaible declaration, at first, I thought
could implement this.
> However, the name "alloc" seems to allocate memory from heap memory.and the
> local variable in function should stay at stack memory.
AllocaInst represents stack memory, not heap memory, much like the alloca
standard library function.
> In which way did llvm allocate memeory to AllocInstruction() ? Would the memory
> allocated by AllocInstruction() be recycled back?
> If not what is the ideal way to locate memory for local varaible in function?
> ps: I've tried llvm.org/demo <http://llvm.org/demo> to watch the IR code,
> however, it seems to optimize so much to eliminate any intermidate varaible.
You can disable optimization by choosing "None" for "Optimization level".
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