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New posts in 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
Libtool think that a "library was moved" but it isn't the case
Dec 16, 2019
gtk
libtool
freetype
pango
x86-64
Intel x86-64 XSAVE/XRSTOR
Nov 04, 2022
assembly
x86-64
Compiler using local variables without adjusting RSP
Aug 11, 2022
c
linux
assembly
x86-64
red-zone
intel
Cost of a page fault trap
Aug 11, 2022
c
linux
memory-management
x86-64
intel
Which address space is occupied by the kernel in 64 bit Linux?
Nov 03, 2022
linux
linux-kernel
x86-64
Unsigned 64-bit to double conversion: why this algorithm from g++
Mar 17, 2021
assembly
floating-point
g++
x86-64
Difference in ABI between x86_64 Linux functions and syscalls
Apr 08, 2022
assembly
linux-kernel
x86-64
system-calls
abi
Why does MSVC not support inline assembly for AMD64 and Itanium targets?
Apr 04, 2022
visual-c++
assembly
x86-64
inline-assembly
itanium
Why does jmpq of x86-64 only need 32-bit length address?
Sep 16, 2022
assembly
x86-64
cpu-architecture
machine-code
instruction-encoding
Why is the performance of a running program getting better over time?
Nov 11, 2022
c++
c++11
x86-64
Making assembly function inline in x64 Visual Studio
Nov 15, 2022
c
visual-studio
x86-64
masm
get unsigned long long addition carry
Apr 13, 2022
c
x86-64
addition
integer-overflow
extended-precision
Why is there no "sub rsp" instruction in this function prologue and why are function parameters stored at negative rbp offsets?
Apr 17, 2022
c
assembly
x86-64
stack-memory
red-zone
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