Godbolt Compiler Explorer MCP

Use Godbolt Compiler Explorer to compile this C++ code with GCC at O0, O2, and O3, then compare the generated assembly and explain which optimizations were triggered:

int sum(int* a, int n){
  int s = 0;
  for(int i=0;i<n;i++) s += a[i];
  return s;
}

Assembly outputs for each optimization level, plus a summary of loop optimizations, register usage, and instruction reductions.

Use Godbolt Compiler Explorer to compile this Rust code with different compiler configurations, show each assembly output, and analyze the main implementation differences affecting performance:

fn square_sum(x: i32, y: i32) -> i32 {
    x * x + y * y
}

Assembly listings from different compiler setups, with explanations of implementation strategy and potential performance differences.

Use Godbolt Compiler Explorer to compile the following C code, inspect why this function was not optimized as expected, and suggest how to rewrite it:

volatile int flag;
int foo(int x){
  if(flag) return x * 2;
  return x * 2;
}

The resulting assembly with an explanation of what blocked optimization, such as volatile effects, plus rewrite suggestions.