EOF

EOF has asked 3 questions and find answers to 43 problems.

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EOF questions

If CHAR_BIT != 8, what is the size of other types?
gcc consumes all memory when optimizing -O3

EOF answers

x64 - Why still use 'call'?
Why can't GCC generate an optimal operator== for a struct of two int32s?
Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_u64 on Intel CPUs
Passing value as a function argument vs calculating it twice?
Compiler Optimizations effect on FLOPs and L2/L3 Cache Miss Rate using PAPI
Bus error (core dumped) when using strcpy to a mmap'ed file
What are the benefits of using smaller registers, e.g. al vs eax / rax
LFENCE is really useless vs. Spectre #2?
Unroll loop and do independent sum with vectorization
Fast byte-wise replace if