[llvm-dev] [llvm] Query the target from an opt pass?

[Friedman, Eli via llvm-dev]

On 4/3/2018 9:25 AM, Kevin Neal via llvm-dev wrote:
> I'm working on the #pragma STDC FENV_ACCESS ON support, specifically
> the support for a strict version of the FP to unsigned int conversion.
> I've got a pass that runs and converts a new intrinsic into code that
> uses the FP to signed int conversion code similar to how SelectionDAG
> handles this now. Except that SelectionDAG will let the target handle
> it if the target says it will.
> How do I, from an "optimization" pass, query the target to see if it
> already has a better way of handling exactly this case? I grepped around
> and I didn't see anything in a pass that looked like what I need.

TargetTransformInfo is probably what you're looking for.

-Eli

-- 
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project

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