JumpUnlessBothNonNegativeSmi 5219 src/x64/code-stubs-x64.cc   __ JumpUnlessBothNonNegativeSmi(rcx, rdx, &runtime);
JumpUnlessBothNonNegativeSmi  527 src/x64/macro-assembler-x64.h   void JumpUnlessBothNonNegativeSmi(Register src1, Register src2,