IssueRaiser

What a waste of time.

What a waste of time. Yes, specialists can squeeze the last performance improvements in ASM compared to C. Doesn't mean that -O2/-O3, auto-vectorizing can't do a nice job and get to 90% of that Optimizing DO matter. Just compare -O0 and -O1. Really. It's not because CPUs are fast that people shouldn't do that and compilers shouldn't optimize a bare minimum. It's even better that the compiler do that because ASM optimizing by hand is very error prone. And compilers get better every day. Just look at LLVM.

Posted by raverbashing on Apr 18, 2015, 6:50 AM

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What a waste of time.

raverbashingApr 18, 2015, 6:50 AM

What a waste of time. Yes, specialists can squeeze the last performance improvements in ASM compared to C. Doesn't mean that -O2/-O3, auto-vectorizing can't do a nice job and get to 90% of that Optimizing DO matter. Just compare -O0 and -O1. Really. It's not because CPUs are fast that people shouldn't do that and compilers shouldn't optimize a bare minimum. It's even better that the compiler do that because ASM optimizing by hand is very error prone. And compilers get better every day. Just look at LLVM.

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