[PATCH] D100099: [X86][CostModel] Try to fix cost computation load/stores of non-power-of-two vectors

Roman Lebedev via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Tue Apr 20 14:46:13 PDT 2021


lebedev.ri added a comment.

In D100099#2703043 <https://reviews.llvm.org/D100099#2703043>, @srj wrote:

> OK, here's a file that I think will repro it: F16410571: bad.ll <https://reviews.llvm.org/F16410571>
>
> To see the hang, do `~/llvm-13-install/bin/llc -mcpu=penryn -o - -O3 bad.ll`  (Note that the cpu / microarchtecture matters here; the hang for us was only when specializing for SSE4.1 SIMD)

Hm, that's because this isn't the patch you're looking for <jedi hand-wave>.
Please rebisect, reverting this doesn't make that hang go away for me.


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