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
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).
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?
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
do GCC or similar compilers perform optimizations that are aimed at improving the numerical stability of floating-point operations.
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
I have an class hierarchy rooted in an interface and implemented with an abstract base class. It something looks like this:
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:
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?
To what extent can a JIT replace platform independent code with processor-specific machine instructions?
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