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New posts in x86-64
Why don't GCC and Clang use cvtss2sd [memory]?
Jan 29, 2022
performance
assembly
x86-64
sse
What is this assembly function prologue / epilogue code doing with rbp / rsp / leave?
Oct 11, 2017
macos
gcc
assembly
stack
x86-64
How to load a pixel struct into an SSE register?
Jul 22, 2016
c
pixel
x86-64
sse
intrinsics
intel
Can branch prediction cause illegal instruction?
Jun 21, 2021
assembly
x86-64
cpu-architecture
branch-prediction
Can't call C standard library function on 64-bit Linux from assembly (yasm) code
Apr 10, 2022
linux
assembly
x86-64
nasm
yasm
MWAIT vs HALT in terms of efficiency
Nov 19, 2022
assembly
x86-64
cpu-architecture
instruction-set
IBM example code, non re-entrant functions doesn't work in my system
Apr 10, 2022
c
gcc
signals
x86-64
data-race
Assembly registers in 64-bit architecture
Mar 22, 2022
assembly
x86-64
32bit-64bit
cpu-registers
itanium
Is my macbook pro x86 linux or x86_64 darwin? [closed]
Apr 10, 2022
x86
x86-64
platform
How to tell gcc to disable padding inside struct? [duplicate]
Sep 06, 2018
c
gcc
x86-64
padding
gcc6
byte array permute SSE optimization
Jun 12, 2021
c++
gcc
x86-64
sse
simd
Is this is a good way to intercept system calls?
Nov 07, 2022
c
linux
gcc
x86-64
glibc
Reproducing Unexpected Behavior w/Cross-Modifying Code on x86-64 CPUs
Aug 16, 2018
assembly
concurrency
x86
thread-safety
x86-64
Is garbage allowed in high bits of parameter and return value registers in x86-64 SysV ABI?
Aug 05, 2019
linux
x86
x86-64
calling-convention
Why is tailcall optimization not performed for types of class MEMORY?
Mar 20, 2022
c
gcc
optimization
x86-64
calling-convention
256-bit arithmetic in Clang (extended integers)
Jan 10, 2022
c
clang
x86-64
bigint
extint
Why do x86-64 Linux system calls work with 6 registers set?
Apr 06, 2022
linux-kernel
operating-system
x86-64
system-calls
abi
How to optimize function return values in C and C++ on x86-64?
Oct 27, 2022
c++
c
performance
x86-64
abi
Why does this movq instruction work on linux and not osx?
Jun 20, 2021
linux
macos
x86-64
Why are some Haswell AVX latencies advertised by Intel as 3x slower than Sandy Bridge?
Jun 13, 2021
x86-64
intel
simd
cpu-architecture
avx2
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