u014723123的专栏

Not all conditional expressions can be compiled using conditional moves. Most significantly, the abstract code we have shown evaluates both then-expr and else-expr regardless of the test outcome. If o

The combination of the new hardware supplied by Intel and AMD ,and the new versions of GCC targeting these machines makes x86-64code substantially different from that generated for IA32 machines. The

While static libraries are useful and essential tools, they are also a source of confusion to programmers because of the way the Unix linker uses them to resolve external references.During the symbol

CF: Carry Flag.The most recent operation generated a carry out of the most significant bit. Used to detect overflow for unsigned operations.ZF: Zero Flag. The most recent operation yielded zero.SF