All X86 64 Solutions on Gang of Coders

Total of 49 X86 64 Solutions

What's the purpose of the LEA instruction?

AssemblyX86X86 64X86 16

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

C++AssemblyX86 64Cpu ArchitectureFlops

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

C++PerformanceGccX86 64Compiler Optimization

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

.NetAssembliesX8664 BitX86 64

Submit to App Store issues: Unsupported Architecture x86

IosXcodeIos SimulatorApp Store-ConnectX86 64

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

CGccAssemblyX86 64Integer Division

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

PerformanceOptimizationAssemblyX86 64Freepascal

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

LinuxAssemblyX86 64Calling ConventionAbi

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

RustX86 64BigintInt128Llvm Codegen

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

AssemblyX86X86 64Cpu RegistersZero Extension

Bubble sort slower with -O3 than -O2 with GCC

CGccX86 64Cpu ArchitectureCompiler Optimization

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

C#.NetWinapi64 BitX86 64

Possible GCC bug when returning struct from a function

CGccAssemblyX86 64Compiler Bug

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

WindowsAssemblyX86 64Calling ConventionAbi

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

X86 64Virtual MemoryCpu Architecture

Floating point vs integer calculations on modern hardware

C++X86Floating PointX86 64

System.BadImageFormatException: Could not load file or assembly (from installutil.exe)

.NetWindows ServicesX8664 BitX86 64

Why is x86 ugly? Why is it considered inferior when compared to others?

AssemblyX86MipsX86 64Cpu Architecture

Targeting both 32bit and 64bit with Visual Studio in same solution/project

.NetVisual Studio64 BitX86 64

Ask GDB to list all functions in a program

CLinuxGccGdbX86 64

What is the purpose of the RBP register in x86_64 assembler?

CAssemblyX86 64Stack Pointer

How to build x86 and/or x64 on Windows from command line with CMAKE?

CVisual StudioCmakeCross CompilingX86 64

Memory alignment : how to use alignof / alignas?

C++C++11X86 64Memory Alignment

What does "rep; nop;" mean in x86 assembly? Is it the same as the "pause" instruction?

AssemblyX86X86 64CpuMachine Code

What does @plt mean here?

LinuxAssemblyX86 64DisassemblyDynamic Linking

x86_64 registers rax/eax/ax/al overwriting full register contents

AssemblyX86 64Cpu RegistersZero Extension

How can objdump emit intel syntax

LinuxAssemblyX86 64Objdump

Why can't GCC generate an optimal operator== for a struct of two int32s?

C++GccX86 64Compiler OptimizationMicro Optimization

Why does my Intel Skylake / Kaby Lake CPU incur a mysterious factor 3 slowdown in a simple hash table implementation?

C++PerformanceGccX86 64Hashtable

Where is the x86-64 System V ABI documented?

LinuxAssemblyX86 64Calling ConventionAbi

Force gcc to compile 32 bit programs on 64 bit platform

LinuxGcc32 BitX86 64

To learn assembly - should I start with 32 bit or 64 bit?

AssemblyX86X86 64Low Level

What is the purpose of the "PAUSE" instruction in x86?

Parallel ProcessingX86X86 64IntelCritical Section

Why is the construction of std::optional<int> more expensive than a std::pair<int, bool>?

C++PerformanceAssemblyX86 64C++17

Why is memcmp(a, b, 4) only sometimes optimized to a uint32 comparison?

CGccClangX86 64Compiler Optimization

What does the endbr64 instruction actually do?

AssemblyX86 64IntelInstructions

How to use gdb with LD_PRELOAD

CLinuxGccGdbX86 64

Is there a 128 bit integer in gcc?

CGccX86 64Bigint128 Bit

What are the names of the new X86_64 processors registers?

AssemblyX86X86 64Cpu Registers

Performance difference between Windows and Linux using Intel compiler: looking at the assembly

C++AssemblyX86 64IccIntel Vtune

What is the difference between x64 and IA-64?

64 BitX86 64Cpu ArchitectureItanium

What happens if you use the 32-bit int 0x80 Linux ABI in 64-bit code?

LinuxAssemblyX86 64System CallsAbi

Difference between x86, x32, and x64 architectures?

X8664 BitX86 64Cpu ArchitectureAbi

Intel 64, rsi and rdi registers

AssemblyX86 64

Why does GCC call libc's sqrt() without using its result?

C++GccAssemblyX86 64

How does malloc work in a multithreaded environment?

CLinuxGccMallocX86 64

What registers are preserved through a linux x86-64 function call

LinuxAssemblyX86 64Calling ConventionAbi

Does it make any sense to use the LFENCE instruction on x86/x86_64 processors?

AssemblyX86X86 64AtomicMemory Barriers

How to check if Intel Virtualization is enabled without going to BIOS in Windows 10

WindowsWindows 10X86 64IntelVirtualization