microsoft / microsoft/DirectXShaderCompiler

[202x] `auto` return types for normal functions

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Dominant language
C++
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Description

The HLSL standard committee is considering adding support for auto return types for normal functions (as implemented in C++14).

We should add this feature to DXC since it seems like an obvious extension over basic auto which we've already added as an extension.

The full proposal document is here:
https://hlsl-tc57.github.io/tc57/proposal/0010/

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reading the HLSL TC57 proposal at https://hlsl-tc57.github.io/tc57/proposal/0010/ and reviewing how DXC currently implements basic auto as an extension. Use the proposal to define the normal-function return-type behavior, then verify that the implementation matches the specified cases.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
compilers
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Active
Clarity
Mostly clear
Newbie friendliness
45/100

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