compiler-optimization Examples and Free Source Code

Optimize C++ function by value analysis (remove an if body that derefs a pointer which must be null ...

c++compiler-optimization undefined-behavior

Does const-correctness give the compiler more room for optimization?...

c++c pointers compiler-optimization const-correctness

Loop unrolling behaviour in GCC...

c++gcc compiler-optimization loop-unrolling

Standard C++11 code equivalent to the PEXT Haswell instruction (and likely to be optimized by compil...

c++x86 bit-manipulation compiler-optimization bmi

How do I force gcc to call memcpy under -Os...

c gcc x86-64 compiler-optimization built-in

AVR gcc creates intermediate counting variable when not needed...

gcc compiler-optimization avr avr-gcc

Whole Program Optimization fails: liveness info inextricable...

windows compiler-optimization freepascal nm link-time-optimization

What kind of optimization does const offer in C/C++?...

c++c constants compiler-optimization const-correctness

Can const-correctness improve performance?...

c++performance compiler-optimization const-correctness

Inlining methods in C#?...

c#optimization compiler-optimization inlining

Optimal code generation for std::isnan in Visual Studio 2026...

c++visual-c++floating-point nan compiler-optimization

Can the compiler choose memory ordering for atomic operations?...

c thread-safety atomic compiler-optimization memory-barriers

Is it possible to eliminate the this pointer in a singleton?...

c++oop singleton compiler-optimization calling-convention

Why don't C overflow checks use CPU flags?...

c assembly compiler-optimization integer-overflow

Why do GCC and Clang fail to auto-vectorize simple loop?...

c++gcc clang vectorization compiler-optimization

What C/C++ compiler can use push pop instructions for creating local variables, instead of just incr...

c++assembly x86 compiler-optimization micro-optimization

How can modern compiler optimization convert recursion into returning a constant?...

c++recursion gcc g++compiler-optimization

Why does the compiler give strncpy 'stringop-truncation' warning only with -O2?...

compiler-optimization compiler-warnings avr-gcc

How to call inline functions by using dl library?...

c++linux shared-libraries compiler-optimization

Is Option compiled to a runtime check or an instruction jump?...

rust compiler-optimization

Does excessive use of [[likely]] and [[unlikely]] really degrade program performance in C++?...

c++c++20 compiler-optimization branch-prediction likely-unlikely

Why would you NOT want the compiler to optimize your code?...

compiler-optimization

Is it possible to tell the branch predictor how likely it is to follow the branch?...

c gcc x86 compiler-optimization micro-optimization

Why does modulo in a loop code result in so different assembly in C (compiled by GCC) and in Rust (c...

c assembly rust x86-64 compiler-optimization

Can the compiler elide a const local copy of const& vector parameter?...

c++exception memory-management immutability compiler-optimization

Why does MSVC AVX2 /FP:strict sometimes generate inferior (slower) code to SSE2?...

visual-c++x86 benchmarking compiler-optimization polynomials

How is rust able to optimize Option::is_some_and so effectively?...

rust code-generation compiler-optimization

Will the compiler know to skip this loop?...

c++loops compilation compiler-optimization

Does GCC optimize array access with __int128 indexes incorrectly?...

c++gcc compiler-optimization compiler-bug int128

Why are [[no_unique_address]] members not transparently replaceable?...

c++compiler-optimization standards lifetime implicit-lifetime