c - 使用诸如 JVM 之类的运行时信息来加快编译程序的速度吗？

Question

在特定任务中，Java 程序可以胜过 C 等编译型编程语言。这是因为 JVM 具有运行时信息，并在必要时进行 JIT 编译(我猜)。

(示例:http://benchmarksgame.alioth.debian.org/u32/performance.php?test=chameneosredux)

编译型语言有这样的东西吗？(我首先对C感兴趣)

编译源代码后，开发人员运行它并尝试模拟典型的工作负载。工具收集有关运行的信息，然后根据这些数据再次重新编译。

Answer 1

gcc 有 -fprofile-arcs

来自手册页:

-fprofile-arcs    Add code so that program flow arcs are instrumented. During execution the     program records how many times each branch and call is executed and how many     times it is taken or returns. When the compiled program exits it saves this     data to a file called auxname.gcda for each source file. The data may be     used for profile-directed optimizations (-fbranch-probabilities), or for     test coverage analysis (-ftest-coverage).