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New posts in x86-64

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 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

Why would introducing useless MOV instructions speed up a tight loop in x86_64 assembly?

performance optimization assembly x86-64 freepascal

Why does GCC use multiplication by a strange number in implementing integer division?

c gcc assembly x86-64 integer-division intel

Submit to App Store issues: Unsupported Architecture x86

ios xcode ios-simulator app-store-connect x86-64

How can I determine if a .NET assembly was built for x86 or x64?

.net assemblies x86 64-bit x86-64

Why does GCC generate 15-20% faster code if I optimize for size instead of speed?

c++ performance gcc x86-64 compiler-optimization

How do I achieve the theoretical maximum of 4 FLOPs per cycle?

c++ assembly x86-64 cpu-architecture flops

What's the purpose of the LEA instruction?

assembly x86 x86-64 x86-16
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