c++ Programming Glossary: registers

http://stackoverflow.com/questions/16142284/convert-inline-assembly-code-to-c

in Windows pass four integer type args in general purpose registers plus some float type args in XMM registers . You therefore need.. general purpose registers plus some float type args in XMM registers . You therefore need to know more about the signature prototype..

What is “cache-friendly” code?

http://stackoverflow.com/questions/16699247/what-is-cache-friendly-code

computer architectures feature complex memory hierarchies registers typically several levels of cache within the CPU chip L1 L2..

Coding Practices which enable the compiler/optimizer to make a faster program

http://stackoverflow.com/questions/2074099/coding-practices-which-enable-the-compiler-optimizer-to-make-a-faster-program

them to make better decisions about what values to hold in registers than you could possibly do. The register keyword became unimportant...

Why is volatile not considered useful in multithreaded C or C++ programming?

http://stackoverflow.com/questions/2484980/why-is-volatile-not-considered-useful-in-multithreaded-c-or-c-programming

should be declared to be volatile . Signal handlers I O registers and variables modified by another thread all constitute such.. we need for what volatile is intended for manipulating I O registers or memory mapped hardware but it doesn't help us in multithreaded..

Floating point vs integer calculations on modern hardware

http://stackoverflow.com/questions/2550281/floating-point-vs-integer-calculations-on-modern-hardware

on multiple data at once plus there is a separate bank of registers for the SSE operations. I noticed in your second example you.. because those old instructions actually used the same registers as the FPU does making it impossible to use both the FPU and..

Diamond inheritance (C++)

http://stackoverflow.com/questions/379053/diamond-inheritance-c

or until some external event by providing a class that registers as a callback for the given event. If you don't need polimorphism..

What happens when a computer program runs?

http://stackoverflow.com/questions/5162580/what-happens-when-a-computer-program-runs

it depends on the size of the bus at a time puts them in registers and executes them. I also know that a computer program uses.. Instructions go from the RAM to the stack to the registers c memory operating system x86 computer architecture share.. into the process address space as described above. The registers still on x86 physically reside inside the processor as opposed..

What is the use of volatile keyword?

http://stackoverflow.com/questions/5190091/what-is-the-use-of-volatile-keyword

of execution in a broad sense . This includes hardware registers status variables in signal handlers live variables that are..

Is C# really slower than say C++?

http://stackoverflow.com/questions/5326269/is-c-sharp-really-slower-than-say-c

The garbage collector works by starting from places e.g. registers and execution stack that pointers references are known to be..

JIT compiler vs offline compilers

http://stackoverflow.com/questions/538056/jit-compiler-vs-offline-compilers

they are JITted. On 64 bit hardware they will use more registers memory and a better instruction set. Virtual method calls inside..

Real-world use of X-Macros

http://stackoverflow.com/questions/6635851/real-world-use-of-x-macros

#undef ENTRY Another usage is to declare and initialize registers #define IO_ADDRESS_OFFSET 0x8000 #define REGISTER_TABLE ENTRY.. 2 0x1b ... ENTRY regX IO_ADDRESS_OFFSET X 0x33 declare the registers where _at_ is a compiler specific directive #define ENTRY a.. uint8_t a _at_ b REGISTER_TABLE #undef ENTRY initialize registers #define ENTRY a b c a c REGISTER_TABLE #undef ENTRY My favourite..

C++ ABI issues list

http://stackoverflow.com/questions/7492180/c-abi-issues-list

location Member alignment Padding Register usage which registers are preserved which are scratch size of primitive types such..

how to achieve 4 FLOPs per cycle

http://stackoverflow.com/questions/8389648/how-to-achieve-4-flops-per-cycle

packed addpd as well as the scalar addsd versions and sse registers can contain 2 double 's the throughput can be as much as 2 flops.. This code is optimized for x64. x86 doesn't have enough registers for this to compile well. This code has been tested to work..

Move assignment operator and `if (this != &rhs)`

http://stackoverflow.com/questions/9322174/move-assignment-operator-and-if-this-rhs

the hardware How expensive is a branch Are there lots of registers or very few The take away is that self move assignment unlike..