compiler-optimization
Compiler optimizations of inlined functions in C++
When a function which take a pointer in argument is inlined, does the compiler remove the indirection during the optimization process ? Of course when it makes sense..[详细]
2023-04-04 07:24 分类:问答What is the difference between the various compiler debug flags?
I have found the list of ifort debug flags. However, I am开发者_JAVA百科 confused about some explanation of debug flags. As it stated, -debug can be configured as all, full, minimal and none. May I as[详细]
2023-04-03 14:21 分类:问答What kinds of optimization LLVM does and what kinds of optimizations its frontends have to implement themselves?
Notice: I noticed this question is a lot related to this one, so if you\'re somebody interested in my question, you should definitely read that other one and its answers too.[详细]
2023-04-03 07:09 分类:问答Is there a way to get the .Net JIT or C# compiler to optimize away empty for-loops?
A followup to Does .NET JIT optimize empty loops away?: The following program just runs an empty loop a billion times and prints out the time to run.It takes 700 ms on my machine, and I\'m curious if[详细]
2023-04-02 17:18 分类:问答Are explicitly Infinite Loops handled in .NET as a special case?
Earlier today, as I was coding a method and it struck me that I wasn\'t sure exactly why the idiom I was implementing compiles.If everything else is abstracted away, it would look something like this:[详细]
2023-04-02 16:09 分类:问答GCC 4.3/4.4 vs MSC 6 on i386 optimization for size fail
I am not sure what am I doing wrong, but I\'ve tried reading manuals about calling conventions of GCC and found nothing useful there. My current problem is GCC generates excessively LARGE code for a v[详细]
2023-04-02 15:41 分类:问答Can/do compilers simplify logical expressions involving functions?
Some functions which calculate booleans: bool a() { return trueorfalse; } bool b() { //... } bool c() { //... } This condition[详细]
2023-04-02 08:24 分类:问答Why would a C++ compiler only eliminate useless writes if there's no code after those writes?
I\'m inspecting Visual C++ 10 optimization capabilities and found a rather curious thing. All code herein is compiled with /O2.[详细]
2023-04-01 15:57 分类:问答Do compilers usually have special optimizations for strings?
Often times you see things like std::map<std::string, somethingelse> m_named_objects; or std::string state;[详细]
2023-04-01 12:30 分类:问答Does Python optimize function calls from loops?
Say, I have a code which calls some function millions time from loop and I want the code to be fast: def outer_function(file):[详细]
2023-04-01 06:54 分类:问答