micro-optimization Examples and Free Source Code

How to MOVe 3 bytes (24bits) from memory to a register?...

assembly x86 x86-64 micro-optimization

Assembly - How to score a CPU instruction by latency and throughput...

performance assembly x86 cpu-architecture micro-optimization

Access of struct member faster if located <128 bytes from start?...

assembly x86 micro-optimization

Copying a bool from a parameter to a global - comparing compilers output...

c++assembly x86 compiler-optimization micro-optimization

Should I inline operators == and != in case when operator!=() uses negation of operator==()...

c++micro-optimization

Convert integer to string in assembly (64-bit, NASM) as fast as possible...

assembly x86-64 nasm micro-optimization

Why is destructuring an array in javascript slower than for an object?...

javascript optimization v8 destructuring micro-optimization

Ternary operator vs array?...

arrays c performance conditional-operator micro-optimization

Directly increase the exponent of a double in order to multiply by a power of two...

java floating-point double micro-optimization type-punning

AND faster than integer modulo operation?...

assembly arm cpu-architecture micro-optimization

Why cant register variables be made global?...

c global cpu-registers micro-optimization

Why does some Windows booloader code zero registers with `sub` instead of `xor`?...

assembly x86 micro-optimization zero-initialization

Inconsistent `perf annotate` memory load/store time reporting...

performance assembly x86-64 perf micro-optimization

manipulating mips assembly code to decrease cache miss rate (mars simulator)...

assembly mips cpu-cache micro-optimization mars-simulator

Efficient computation of the average of three unsigned integers (without overflow)...

c algorithm bit-manipulation micro-optimization extended-precision

PHP: Check if variable is type of string AND is not empty string?...

php performance micro-optimization

jump/jump compilation strategy for stackless functions. (Using a link register manually instead of c...

assembly x86 compiler-construction calling-convention micro-optimization

x86 assembly - optimization of clamping rax to [ 0 .. limit )...

assembly optimization x86 micro-optimization clamp

x > -1 vs x >= 0, is there a performance difference...

java c++operators micro-optimization premature-optimization

Mathematically find the value that is closest to 0...

algorithm math micro-optimization branch-prediction absolute-value

how to zero out all the registers in assembly without multiple instructions?...

assembly x86 nasm cpu-registers micro-optimization

Why move 32-bit register to stack then from stack to xmm register?...

assembly x86 sse att micro-optimization

Set an XMM register to a repeating byte pattern (broadcast a constant byte)...

assembly sse micro-optimization sse2

Does it cost significant resources for a modern CPU to keep flags updated?...

performance assembly cpu-architecture micro-optimization eflags

Java Micro-optimization: To cache or not to cache a System.currentTimeMillis() return value?...

java caching optimization time micro-optimization

Returning Vs. Pointer...

c++c optimization micro-optimization

Broadcasting DWORD to YMM...

assembly simd avx micro-optimization

x86 opcode alignment references and guidelines...

assembly x86 x86-64 memory-alignment micro-optimization

Multiplication with constant - imul or shl-add-combination...

assembly x86 micro-optimization

Can I use movl instead of movb or movw in Assembly on modern systems?...

assembly x86 cpu-architecture micro-optimization mov