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d4216
2018 Mar 06
0
how to simplify FP ops with an undef operand?
> On Mar 6, 2018, at 4:25 PM, Chris Lattner via llvm-dev <llvm-dev at lists.llvm.org> wrote:
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>> On Mar 6, 2018, at 7:23 AM, Sanjay Patel via llvm-dev <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>> wrote:
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>> I need to review the last thread about undef/poison (or someone who knows current status of that can reply), but
2018 Mar 06
2
how to simplify FP ops with an undef operand?
> On Mar 6, 2018, at 7:23 AM, Sanjay Patel via llvm-dev <llvm-dev at lists.llvm.org> wrote:
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> I need to review the last thread about undef/poison (or someone who knows current status of that can reply), but this would seem to come down to whether undef applies to the entire value or the individual bits?
> Ie, in your example the sign bit will never be set unless all of the