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MSVC C++ compiler giving inconsistent performance on different builds of the same code when using [[unlikely/likely]] attributes
user_9642458
0
•
asked Jul 6, 2021
3
0
97
c++20
likely-unlikely
x86-64
visual-c++
c++
Why is the compiler dedicating a memory location for storing a redundant variable in this case?
user_12357035
0
•
asked Jul 6, 2021
3
1
212
x86-64
atomic
assembly
gcc
c++
The address of C ++ pointer
user_6907215
0
•
asked Jul 5, 2021
3
1
126
x86-64
memory-address
pointers
c++
Program counter, fences and processor re-ordering
user_7108769
0
•
asked Jul 4, 2021
2
2
79
memory-barriers
x86-64
assembly
cpu-architecture
windows
Are machine code instructions fetched in little endian 4-byte words on an Intel x86-64 architecture?
user_9400421
0
•
asked Jul 2, 2021
4
2
460
word
x86-64
endianness
machine-code
intel
Why I can't access to Tss variable declared in assembly from this C code?
user_1888143
0
•
asked Jul 1, 2021
3
1
113
osdev
x86-64
gnu-assembler
assembly
c
Why does GCC allocate "too much" stack space for local C struct?
user_4858640
0
•
asked Jun 29, 2021
2
0
106
stack-frame
x86-64
x86
gcc
c++
Understanding assembly language operand forms
user_16320404
0
•
asked Jun 26, 2021
2
1
493
addressing-mode
x86-64
assembly
hex
How can I cross compile Rust code into Intel assembly on an ARM M1 Apple Silicon Mac?
user_527702
0
•
asked Jun 26, 2021
5
1
3436
rust
x86-64
cross-compiling
macos
Why is my assembly code much slower than the C implementation
user_494845
0
•
asked Jun 25, 2021
2
1
142
x86-64
assembly
c
performance
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