def _generate_len_gep(self, array_ref, ty, const_index_length):
array = llvm_rffi.LLVMBuildBitCast(self.builder,
array_ref, ty, "")
indices = lltype.malloc(rffi.CArray(llvm_rffi.LLVMValueRef), 2,
flavor='raw')
indices[0] = self.cpu.const_zero
indices[1] = const_index_length
loc = llvm_rffi.LLVMBuildGEP(self.builder, array, indices, 2, "")
lltype.free(indices, flavor='raw')
return loc
def _generate_gep(self, op, ty, const_index_array):
array = llvm_rffi.LLVMBuildBitCast(self.builder,
self.getptrarg(op.args[0]),
ty, "")
indices = lltype.malloc(rffi.CArray(llvm_rffi.LLVMValueRef), 3,
flavor='raw')
indices[0] = self.cpu.const_zero
indices[1] = const_index_array
indices[2] = self.getintarg(op.args[1])
location = llvm_rffi.LLVMBuildGEP(self.builder, array, indices, 3, "")
lltype.free(indices, flavor='raw')
return location
def _generate_field_gep(self, v_structure, fielddescr):
assert isinstance(fielddescr, FieldDescr)
indices = lltype.malloc(rffi.CArray(llvm_rffi.LLVMValueRef), 1,
flavor='raw')
indices[0] = self.cpu._make_const_int(fielddescr.offset)
location = llvm_rffi.LLVMBuildGEP(self.builder,
self.getptrarg(v_structure),
indices, 1, "")
lltype.free(indices, flavor='raw')
ty = self.cpu.types_ptr_by_index[fielddescr.size_index]
location = llvm_rffi.LLVMBuildBitCast(self.builder, location, ty, "")
return location