> Compiler writers tend to assume the processor is a dumb machine. A lot of C de... | Hacker News

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		saagarjha on April 15, 2020 \| parent \| context \| favorite \| on: Tell HN: C Experts Panel – Ask us anything about C > Compiler writers tend to assume the processor is a dumb machine. A lot of C developers tend to assume the compiler is a dumb program ;) There are significant hoisting and vectorization optimizations that signed overflow can unlock, but they can't always be applied.

Gibbon1 on April 15, 2020 [–]

If C had real array types the compiler could do real optimizations instead of petty useless ones based on UB.

saagarjha on April 15, 2020 | [–]

Fair, hence the push in many language for range-based for loops that can optimize much better.

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