[Compiler] Addressing new compiler warnings

[jplehr]

Proposed changes

Clang enables new lifetime warnings in production and we see build errors due to this with the staging compiler.

The attributes added in this PR are suggested by the compiler. However, I'm not very familiar with the code base, so the changes may be incorrect.

Checklist

Please put an x into the boxes that apply. You can also fill these out after creating the PR. If you're not sure, please don't hesitate to ask.

• I have added tests relevant to the introduced functionality, and the unit tests are passing locally
• I have added the test to REGRESSION_TESTS list defined at the top of CMakeLists.txt in tests/CMakeLists.txt, IF the test takes more than 30 seconds to run.
• I have added inline documentation which enables the maintainers with understanding the motivation
• I have removed the stale documentation which is no longer relevant after this pull request
• (If this change is user-facing) I have added release notes which provide the end users with a brief summary of the improvement from this pull request
• I have run clang-format on all changed files
• Any dependent changes have been merged

Discussion

[jplehr]

I came across a couple of more instances of this issue. Will update the PR shortly.

[Copilot]

Pull request overview

This PR addresses new compiler warnings from Clang's lifetime analysis by adding [[clang::lifetimebound]] attributes to function parameters. The changes prevent potential dangling reference issues by annotating parameters whose lifetimes are bound to the returned reference.

Changes:

• Added [[clang::lifetimebound]] attributes to function parameters that return references tied to input parameter lifetimes
• Applied attributes to stream operator overloads and utility functions across multiple header files

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
include/ck/utility/tuple.hpp	Added lifetimebound attribute to tuple element accessor function
include/ck/utility/scheduler_enum.hpp	Added lifetimebound attribute to stream operator for LoopScheduler
include/ck/utility/pipeline_enum.hpp	Added lifetimebound attribute to stream operator for PipelineVersion
include/ck/utility/amd_wave_read_first_lane.hpp	Added lifetimebound attribute to copy_n function's output iterator
include/ck/tensor_operation/gpu/device/tensor_layout.hpp	Added lifetimebound attribute to stream operator for Layout
include/ck/library/utility/host_tensor.hpp	Added lifetimebound attribute to LogRange function's stream parameter
include/ck/host_utility/io.hpp	Added lifetimebound attribute to stream operator for TensorDescriptor

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

The [[clang::lifetimebound]] attribute on the OutputIterator parameter is incorrect. This function returns the iterator by value after advancing it, not a reference bound to the input parameter's lifetime. The lifetimebound attribute should only be applied when the return value's lifetime is directly tied to the parameter (e.g., returning a reference to data owned by the parameter). Remove this attribute as it doesn't apply to this pattern.

Suggested change

	copy_n(InputIterator from, Size size, [[clang::lifetimebound]] OutputIterator to)
	copy_n(InputIterator from, Size size, OutputIterator to)