forked from OSchip/llvm-project
cafdeb1aa6
We're a long way from D50992 and D51553, but this is where we have to start. We weren't back-propagating undefs into binop constant values for anything but add/sub/mul/and/or/xor. This is likely because we have to be careful about not introducing UB/poison with div/rem/shift. But I suspect we already are getting the poison part wrong for add/sub/mul (although it may not be possible to expose the bug currently because we use SimplifyDemandedVectorElts from a limited set of opcodes). See the discussion/implementation from D48987 and D49047. This patch just enables functionality for FP ops because those do not have UB/poison potential. llvm-svn: 343727 |
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README.txt
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