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New posts in x86-64
How expensive is it to convert between int and double?
Sep 03, 2022
c++
x86
c++-cli
x86-64
micro-optimization
What do the E and R prefixes stand for in the names of Intel 32-bit and 64-bit registers?
Aug 29, 2022
assembly
x86
64-bit
x86-64
cpu-registers
Intel x86 vs x64 system call
Sep 03, 2022
linux
assembly
x86
x86-64
interrupt
Why does the iOS simulator require i386 and x86_64 symbols even though I'm on an x86_64 system only?
Sep 02, 2022
ios-simulator
x86-64
i386
Lost Cycles on Intel? An inconsistency between rdtsc and CPU_CLK_UNHALTED.REF_TSC
Aug 31, 2019
performance
x86
x86-64
cpu-architecture
rdtsc
Why did GCC generate mov %eax,%eax and what does it mean?
Sep 02, 2022
gcc
assembly
x86-64
Can an x64 application use x86 assemblies - and vice versa?
Nov 10, 2022
.net
dll
x86
64-bit
x86-64
Intel x86 0x2E/0x3E Prefix Branch Prediction actually used?
Sep 15, 2022
gcc
x86
x86-64
branch-prediction
What does an asterisk * before an address mean in x86-64 AT&T assembly?
Sep 22, 2022
assembly
x86-64
att
addressing-mode
intel
Difference between movq and movabsq in x86-64
Sep 02, 2022
assembly
x86-64
att
instructions
immediate-operand
How to use RIP Relative Addressing in a 64-bit assembly program?
Sep 02, 2022
assembly
64-bit
x86-64
gnu-assembler
Where exactly is the red zone on x86-64?
Nov 12, 2022
assembly
x86-64
calling-convention
abi
red-zone
What does Intel mean by "retired"?
Aug 21, 2021
performance
x86
x86-64
intel
Array initialization optimization
Feb 04, 2022
c++
x86-64
compiler-optimization
calling-convention
abi
Why does division by 3 require a rightshift (and other oddities) on x86?
Sep 13, 2022
c++
assembly
compilation
x86-64
integer-division
Performance 32 bit vs. 64 bit arithmetic
Sep 02, 2022
c++
c
linux
performance
x86-64
How to Tell if a .NET Assembly Was Compiled as x86, x64 or Any CPU
Sep 02, 2022
.net
visual-studio
x86-64
Can I load a 32 bit DLL into a 64 bit process on Windows?
Sep 01, 2022
.net
windows
64-bit
x86-64
intel
Why does Visual Studio use xchg ax,ax
Sep 01, 2022
assembly
code-generation
x86-64
Efficient integer floor function in C++
Nov 10, 2022
c++
performance
x86-64
processing-efficiency
floor
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