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New posts in x86-64
Where is the source of imprecise calculation in the assembler code of gcc -Ofast compared with -O3? [closed]
Mar 21, 2026
c
assembly
gcc
x86-64
fast-math
Why doesn't copy_user_enhanced_fast_string use AVX if it is available?
Mar 20, 2026
linux
assembly
linux-kernel
x86-64
Segmentation fault when using DB (define byte) inside a function
Mar 20, 2026
assembly
x86-64
nasm
machine-code
Newline byte 0Ah being ignored by x86_64 system call print program
Mar 19, 2026
linux
assembly
stack
x86-64
system-calls
How would I increment every byte in a register? (64 Bit, Linux, NASM)
Mar 18, 2026
loops
assembly
x86-64
nasm
increment
Can constant non-invariant tsc change frequency across cpu states?
Mar 17, 2026
assembly
x86-64
intel
cpu-architecture
rdtsc
Can clang be convinced to optimize this almost-leaf function
Mar 16, 2026
c++
performance
optimization
clang
x86-64
Paging in x86-64 architecture
Mar 14, 2026
kernel
x86-64
paging
mmu
page-tables
Calculating number of variable arguments for clone function
Mar 13, 2026
c
linux
gcc
x86-64
variadic-functions
Program counter, fences and processor re-ordering
Mar 13, 2026
windows
assembly
x86-64
cpu-architecture
memory-barriers
Why does the assembly code copy the value from %edx to %rcx before adding to the sum?
Mar 13, 2026
arrays
c
assembly
gcc
x86-64
How is the x86 data segment used in real operating systems and processes?
Mar 13, 2026
x86
operating-system
x86-64
memory-segmentation
Cross mingw compilation fails with unknown pseudo-op
Mar 11, 2026
gcc
compiler-errors
mingw
cross-compiling
x86-64
Why are there empty address spaces between data sections in memory (x86 / nasm)?
Mar 10, 2026
assembly
x86
nasm
x86-64
Does using SIMD have an initialisation cost
Mar 10, 2026
x86-64
simd
arm64
My (AT&T) assembly (x86-x64) code should increment but doesn't
Mar 10, 2026
c
assembly
x86-64
att
GDB does not load source lines from NASM
Mar 10, 2026
assembly
gdb
x86-64
nasm
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