FirstReg          129 nanojit/NativeARM.h FirstReg = R0,
FirstReg          163 nanojit/NativePPC.h FirstReg = R0,
FirstReg          164 nanojit/NativeSparc.h FirstReg = 0,
FirstReg          103 nanojit/NativeX64.h FirstReg = RAX,
FirstReg          142 nanojit/Nativei386.h FirstReg = 0,