Dekker's algorithm in today's world

There are four files here.

• dekker.c
  The C source code.
• dekker-O0.s
  The result of gcc -UV -O0 -S dekker.c, renamed.
• dekker-O3.s
  The result of gcc -UV -O3 -S dekker.c, renamed.
  Look for "L4: jmp L4", an infinite loop.
• dekker-V3.s
  The result of gcc -DV -O3 -S dekker.c, renamed.
  Notice that the infinite loop isn't there any more.

In order to make sense of these, you need to know something about x86 assembly language. There is a CMU handout that should help.