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

4-way bytewise interleave 4x 16-byte vectors from memory, with AVX512...

Insert a bit in a byte at pos n with Assembly...

Why jnz requires 2 cycles to complete in an inner loop...

Cycles/cost for L1 Cache hit vs. Register on x86?...

When to use a certain calling convention...

Is there a penalty when base+offset is in a different page than the base?...

Why does GCC chose dword movl to copy a long shift count to CL?...

Is there any performance difference in using int versus int8_t...

Does cmpxchg write destination cache line on failure? If not, is it better than xchg for spinlock?...

What is the optimal way for reading the contents of a webpage into a string in Java?...

Why this unnecessary MOVAPD copy in gcc 9.1, in a tiny function...

In x86-64 asm: is there a way of optimising two adjacent 32-bit stores / writes to memory if the sou...

Instructions to copy the low byte from an int to a char: Simpler to just do a byte load?...

Can this MIPS assembly code be simplified?...

Avoiding AVX-SSE (VEX) Transition Penalties...

Is movzbl followed by testl faster than testb?...

An implementation of std::atomic_thread_fence(std::memory_order_seq_cst) on x86 without extra perfor...

What is the fastest way to swap the bytes of an unaligned 64 bit value in memory?...

Should combining memory fence for mutex acquire-exchange loop (or queue acquire-load loop) be done o...

How to instruct MS Visual C++ compiler to use an uninitialized __m512i register...

Do java finals help the compiler create more efficient bytecode?...

How can one figure out if a loop is being entered with a 16 byte aligned address in x86-64 assembly?...

fastest way to negate a number...

repz ret: why all the hassle?...

What does `rep ret` mean?...

Is calling `add` on a memory location faster than calling it on a register and then moving the value...

Fast method to copy memory with translation - ARGB to BGR...

Impact on performance when having multiple returns...

80286: Which is the fastest way to multiply by 10?...