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We used to legalize it like it's any other binary operations. It's not, because it accepts mismatched operand types. Because of that, we used to hit various asserts and miscompiles. Specialize vector legalizations to, in the worst case, unroll, or, when possible, to just legalize the operand that needs legalization. Scalarization isn't covered, because I can't think of a target where some but not all of the 1-element vector types are to be scalarized. llvm-svn: 243924 |
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