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> Will the compiler figure this out? Maybe, maybe not.

Does your compiler not generate assembly? Does your platform not have objdump or a similar tool you can use as a disassembler? I suppose asking you to profile is too much, but you can at least look.

Keep in mind that for games you are often targeting three different consoles plus PC. You may also port to other platforms eventually, and won't be able to easily track down all these lines of code at a later date to guarantee they optimize down correctly on your new target.

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