[llvm-dev] Selection DAG chain question

[Matt Arsenault via llvm-dev]

> On Jul 16, 2020, at 14:10, Hendrik Greving via llvm-dev <llvm-dev at lists.llvm.org> wrote:
> 
> I scanned other architectures, haven't found an example where somebody creates a chain out of thin air. Do you know any?


This is the case for all operations expanded as library calls. The call sequence involves a chain. One of the AMDGPU fdiv expansions also introduces a side effecting mode switch with a chain

-Matt
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