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Fix559: Intel 18 has trouble with pointer in ternary expr #1042
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Pull Request Author: brian-kelley |
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Yeah, the old and new code are equivalent.
Thanks for debugging this Brian.
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@brian-kelley LGTM. Thanks for fixing it.
Fix #559 (trsm for conjugate transpose mode with Intel 18). I think this is a compiler bug after all, since one fix was just to replace two ternary expressions
a = cond ? b : c;
witha = c; if(cond) a = b;
. And evaluating b/c have no side effects. But the simpler fix was to just get rid of the ternaries, since whenevercond
is false here, the pointera
is never dereferenced (ifiend == 0
, the loop from 0...iend doesn't run).BTW, In #559 I found that Intel 16/17 didn't have this issue, and I just tried 19 and GCC 9.2 and they didn't either. So it really seems to be a bug only in Intel18.