--- Log opened Tue Dec 28 00:00:13 2021
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04:50 < real_or_random> what was the difference between GCC and clang? UB? just curious
05:07 < sipa> secp256k1_scalar_get_bits with count=32 was doing a 32-bit shift for the exhaustive tests scalar implementation.
05:43 < real_or_random> interesting that LLVM exploits this
05:45 < real_or_random> it's somewhat unexpected but usually the reasoning is that it enables other optimizations. maybe for loops where the loop variable is shifted
05:46 < real_or_random> like signed overflow helps in loop variables because the compiler can prove that the loop terminates
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--- Log closed Wed Dec 29 00:00:14 2021