Compiler optimization involves adapting a compiler to reduce run-time or object size or both.
I'm working on a function that stores a 64-bit value into memory in big endian format. I was hoping that …
c gcc x86 compiler-optimization endiannessWith most C/C++ compilers, there's a flag passable to the compiler, -march=native, which tells the compiler to tune …
gcc clang compiler-optimizationApparently on my Windows 8 laptop with HotSpot JDK 1.7.0_45 (with all compiler/VM options set to default), the below loop final …
java performance compiler-optimization post-increment pre-incrementGCC 6 has a new optimizer feature: It assumes that this is always not null and optimizes based on that. Value …
c++ gcc compiler-optimization undefined-behaviorThe default optimization level for compiling C programs using GCC is -O0. which turns off all optimizations according to GCC …
c gcc optimization performance-testing compiler-optimizationI'm writing a program that's quite compute heavy, and it's annoyingly slow to run in debug mode. My program is …
rust compiler-optimization integer-overflowI'm trying to run some code using PyPy to speed it up. My code uses Pandas dataframes, so I'm trying …
python performance pandas compiler-optimization pypySo for my final assignment in my Computer Systems class, we need to optimize these for loops to be faster …
c loops optimization compiler-optimization debug-modeI wrote this simple C program: int main() { int i; int count = 0; for(i = 0; i < 2000000000; i++){ count = count + 1; } } I …
c gcc compiler-optimization disassemblyUsing gcc 4.7: $ gcc --version gcc (GCC) 4.7.0 20120505 (prerelease) Code listing (test.c): #include <stdint.h> struct test { int before; …
c exception compiler-optimization gcc4