Why doesn’t Clang use vcnt for __builtin_popcountll on AArch32?...

C++ different using declarations for different concepts...

Assembly function address table and data under the function or in data section...

Is reading the `length` property of an array really that expensive an operation in JavaScript?...

When source registers in avx instruction can be reused...

Cost of a 64bits jump, always 10-22 cycles the first time?...

Why does clang's epilogue use `add $N, %rsp` instead of `mov %rbp, %rsp` to restore `%rsp`?...

PHP: What is the fastest and easiest way to get the last item of an array?...

Is not having local functions a micro optimisation?...

Why dependency in a loop iteration can't be executed together with the previous one...

ARM Cortex M0+: How to use "Branch if Carry" instructions in C-code?...

Optimizing a C function call using 64-bit MASM...

Why is movl preferred to movb when translating a C downcast from unsigned int to unsigned char?...

can the mips pseudo-instruction la be replace by a single MIPS instruction?...

Adding a byte from memory to the AX register...

Efficient modulo-255 computation...

How to optimize for writes to memory in hot loop...

Are these the smallest possible x86 macros for these stack operations?...

Why does breaking the "output dependency" of LZCNT matter?...

Fastest way to strip all non-printable characters from a Java String...

Code alignment dramatically affects performance...

printing a signed integer optimization...

High Performance Bit Removal (XOR vs. subtract)...

u8 as i32 vs i32::from_be_bytes([u8;4])...

Why do gcc and clang generate mov reg,-1...

Check if ax is divisible by 16...

Compact shellcode to print a 0-terminated string pointed-to by a register, given puts or printf at k...

Count integers in [1..N] with K zero bits below the leading 1? (popcount for a contiguous range with...

Bottleneck when using indexed addressing modes...

Does optimizing an algorithm from O(2N) down to O(N) make it twice as fast?...