https://bugzilla.gdcproject.org/show_bug.cgi?id=288
--- Comment #1 from Iain Buclaw <ibuc...@gdcproject.org> --- > See the long list of useless conditional jumps towards the end of the first > function in the asm output (whose demangled name is test.t1(unit)) Well, you'd never use -O3 if you care about speed anyway. :-) And they are not useless jumps, it's just the foreach loop unrolled in its entirety. You can see that it's a feature of the gcc-7 series and latter, irregardless of the target, they all produce the same unrolled loop. https://explore.dgnu.org/g/vD3N4Y It might be a nice experiment to add pragma(ivdep) and pragma(unroll) support to give you more control. https://gcc.gnu.org/onlinedocs/gcc/Loop-Specific-Pragmas.html I wouldn't hold my breath though (this is not strictly a bug). -- You are receiving this mail because: You are watching all bug changes.
