compiler-optimization

相关标签：javascript jquery android 多少钱 iPhone

How do optimizing compilers decide when and how much to unroll a loop?

When a compiler performs a loop-unroll optimization, how does it determined by which factor to unroll the loop or whether to unroll the whole loop? Since this is a space-performance trade-off, on aver[详细]

2023-04-11 06:56 分类：问答
Allowed C# Compiler optimization on local variables and refetching value from memory

EDIT: I am asking what happens when two threads concurrently access the same data without proper synchronization (before this edit, that point was not expressed clearly).[详细]

2023-04-10 16:57 分类：问答
Can compiler optimizations, like ghc -O2, change the order (time or storage) of a program?

I\'ve got the feeling that the answer is yes, and that\'s not restricted to Haskell.For example, tail-call optimization changes memory requirements from O(n) to O(l), right?[详细]

2023-04-10 12:48 分类：问答
Which one is faster ? Function call or Conditional if Statement?

Please consider the branch prediction too before answering this question. I have some scenarios where i can replace a conditional statement with a call to a function with the help of function pointer[详细]

2023-04-09 13:55 分类：问答
compiler-optimization for numerical stability

do GCC or similar compilers perform optimizations that are aimed at improving the numerical stability of floating-point operations.[详细]

2023-04-08 02:43 分类：问答
Getting an optimization report from GCC

I would like to know if there is an option I can use with GCC to get a detailed report on the optimization actually chosen and performed by the compiler. This is possible with the Intel C compiler usi[详细]

2023-04-08 02:38 分类：问答
How do I convince the JVM to inline an interface method?

I have an class hierarchy rooted in an interface and implemented with an abstract base class. It something looks like this:[详细]

2023-04-07 16:02 分类：问答
Is accessing volatile local variables not accessed from outside the function observable behavior in C++?

In C++03 Standard observabl开发者_StackOverflow社区e behavior (1.9/6) includes reading and writing volatile data. Now I have this code:[详细]

2023-04-07 06:49 分类：问答
In C++ if a pointer is returned and immediately dereferenced, will the two operations be optimized away?

In C++ if I get and return the address of a variable and the caller then immediately dereferences it, will the compiler reliably optimize out the two operations?[详细]

2023-04-06 22:48 分类：问答
How much instruction-level optimisation can a JIT apply?

To what extent can a JIT replace platform independent code with processor-specific machine instructions?[详细]

2023-04-05 02:09 分类：问答