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llvm::TargetRegisterClass::getSize() llvm::TargetRegisterClass::getAllignment() will return the size and alignment of a virtual register used both in register allocation and stack slot assignment. llvm::TargetRegisterClass::alloc_order_begin() llvm::TargetRegisterClass::alloc_order_end() will give a list of the possible physical registers. When a virtual register is assigned a physical register by v-reg map, that physical register should be in the target register class of the v-reg, and the aliases to that physical register can be found by llvm::TargetRegisterInfo::getAliasSet(...

On 1/28/11 8:14 AM, Qingan Li wrote: > Thanks for your help with me about the way to access type and size of > Value. > But, I want also know the interface for me to access the type or size > of virtual registers in the SSA form. > 1. I find no way to associate the virtual registers with the Value class. In the in-memory LLVM IR, all of the SSA values are C++ objects derived

Thanks for your help with me about the way to access type and size of Value. But, I want also know the interface for me to access the type or size of virtual registers in the SSA form. 1. I find no way to associate the virtual registers with the Value class. 2. I also tried to get the size of register nReg by: TargetRegisterClass::getSize(), where the TargetRegisterClass object is obtained by