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Why is the loop instruction slow? Couldn't Intel have implemented it efficiently?
performance
assembly
x86
intel
cpu-architecture
Why do x86-64 instructions on 32-bit registers zero the upper part of the full 64-bit register?
assembly
x86
x86-64
cpu-registers
zero-extension
What is the best way to set a register to zero in x86 assembly: xor, mov or and?
performance
assembly
optimization
x86
micro-optimization
unaligned address error checking in MIPS 0x10010072 [duplicate]
arrays
assembly
mips
memory-alignment
memory-address
What are the calling conventions for UNIX & Linux system calls (and user-space functions) on i386 and x86-64
linux
assembly
x86-64
calling-convention
abi
Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_u64 on Intel CPUs
c++
performance
assembly
x86
compiler-optimization
Is < faster than <=?
c++
c
performance
assembly
relational-operators
What happens if you use the 32-bit int 0x80 Linux ABI in 64-bit code?
linux
assembly
x86-64
system-calls
abi
MASM string instructions - segment register override on preceding LEA in real mode?
assembly
x86-16
memory-segmentation
How to remove "noise" from GCC/clang assembly output?
c++
gcc
assembly
clang
Why doesn't GCC optimize a*a*a*a*a*a to (a*a*a)*(a*a*a)?
gcc
assembly
floating-point
compiler-optimization
fast-math
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