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New posts in compiler-optimization
why would the optimization ignore the if statement when function has warning [-Wreturn-type]?
Oct 27, 2025
c++
assembly
optimization
compiler-optimization
undefined-behavior
Is there a clang analogue of gcc's `__attribute__((hot))`
Oct 28, 2025
clang
compiler-optimization
clang++
C# Compiler Optimization
Oct 25, 2025
c#
optimization
compiler-optimization
How does clang manage to compile this code with undefined behavior into this machine code?
Oct 27, 2025
c++
compilation
clang
compiler-optimization
undefined-behavior
Microsoft C++ compiler: how to disable auto-vectorization with /O2?
Oct 26, 2025
c++
visual-c++
vectorization
compiler-optimization
Knowing the size of a C function in the compiled objectfile
Oct 25, 2025
c
compiler-optimization
elf
object-files
Should trigonometric functions be cached?
Oct 25, 2025
java
caching
compiler-optimization
jit
Why can the Rust compiler not optimize Option::take and an "if let" if you print the value?
Oct 25, 2025
rust
compiler-optimization
Does the llvm-bolt instrumentation mode result in less accurate BOLT profiles?
Oct 23, 2025
optimization
llvm
compiler-optimization
micro-optimization
bolt-optimizer
why glibc memcpy not choose avx512 version?
Oct 23, 2025
c
compiler-optimization
glibc
avx512
Speeding up a bit test operation by using assembly
Oct 23, 2025
c++
performance
assembly
x86-64
compiler-optimization
Is volatile needed with how smart compilers are these days?
Oct 22, 2025
c
compiler-optimization
volatile
Optimizing away memcpy
Oct 21, 2025
c++
compiler-optimization
Performance penalty for using 'unnecessary' local variable in C#?
Oct 19, 2025
c#
performance
compiler-optimization
local-variables
What does 'MutVar#' mean?
Oct 19, 2025
haskell
ghc
compiler-optimization
ghci
Can GCOV create .gcda file in the different directory structure?
Oct 19, 2025
g++
code-coverage
compiler-optimization
gcov
lcov
Cython execution speed vs. MSVC and GCC versions
Oct 19, 2025
python
gcc
visual-c++
cython
compiler-optimization
Why is a simple FP loop not auto-vectorized, and slower than a SIMD intrinsics calculation?
Oct 17, 2025
c++
optimization
x86-64
compiler-optimization
simd
Do C++ compilers remove const variables used only to make code clearer
Oct 18, 2025
c++
function
memory-management
constants
compiler-optimization
Why is my CUDA warp shuffle sum using the wrong offset for one shuffle step?
Oct 17, 2025
cuda
compiler-optimization
gpu-warp
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