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New posts in compiler-optimization

Understanding the as-if rule, "the program was executed as written"

c++ compiler-optimization

Why is -march=native used so rarely?

gcc clang compiler-optimization

Why don't compilers merge redundant std::atomic writes?

c++ multithreading c++11 compiler-optimization stdatomic

Why don't modern compilers coalesce neighboring memory accesses?

c++ assembly optimization compiler-optimization

Why is there no implicit parallelism in Haskell?

haskell concurrency parallel-processing compiler-optimization

Can the compiler optimize from heap to stack allocation?

c++ memory-management language-lawyer compiler-optimization

How does GCC optimize out an unused variable incremented inside a loop?

c gcc compiler-optimization disassembly

Is a C compiler allowed to coalesce sequential assignments to volatile variables?

c language-lawyer compiler-optimization volatile

Why can't GCC optimize the logical bitwise AND pair in "x && (x & 4242)" to "x & 4242"?

c++ gcc optimization compiler-optimization

Is it possible to implement bitwise operators using integer arithmetic?

bitwise-operators discrete-mathematics compiler-optimization

De Morgan's Law optimization with overloaded operators

c++ operator-overloading language-lawyer compiler-optimization

Why is memcmp(a, b, 4) only sometimes optimized to a uint32 comparison?

c gcc clang x86-64 compiler-optimization intel

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

c++ c constants compiler-optimization

Is this a JVM bug or "expected behavior"?

java jvm compiler-optimization integer-overflow

Why does using the ternary operator to return a string generate considerably different code from returning in an equivalent if/else block?

c++ assembly optimization clang compiler-optimization

Why is std::fill(0) slower than std::fill(1)?

c++ performance x86 compiler-optimization memset

What is the difference between the /Ox and /O2 compiler options?

c++ visual-studio visual-c++ compiler-optimization compiler-options

Compiler stops optimizing unused string away when adding characters

c++ gcc compilation clang compiler-optimization

Why is "while (i++ < n) {}" significantly slower than "while (++i < n) {}"

java performance compiler-optimization post-increment pre-increment

Can compiler optimization introduce bugs?

optimization compiler-construction compiler-optimization
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