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New posts in x86-64

Why do x86-64 systems have only a 48 bit virtual address space?

Why does Windows64 use a different calling convention from all other OSes on x86-64?

Possible GCC bug when returning struct from a function

Bubble sort slower with -O3 than -O2 with GCC

How to find if a native DLL file is compiled as x64 or x86?

c# .net winapi 64-bit x86-64

How does Rust's 128-bit integer `i128` work on a 64-bit system?

Why do x86-64 instructions on 32-bit registers zero the upper part of the full 64-bit register?

What are the calling conventions for UNIX & Linux system calls (and user-space functions) on i386 and x86-64

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

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

Submit to App Store issues: Unsupported Architecture x86

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

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

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

What's the purpose of the LEA instruction?

assembly x86 x86-64 x86-16