Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Clarify the current support of vxsat #330

Merged
merged 1 commit into from
May 8, 2024
Merged

Clarify the current support of vxsat #330

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
7 changes: 6 additions & 1 deletion doc/rvv-intrinsic-spec.adoc
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -107,7 +107,12 @@ NOTE: Rounding mode does not affect the computations of `vsadd`, `vsaddu`, `vssu

NOTE: The RISC-V psABI ^9^ states that `vxrm` is not preserved across calls. Optimization for reducing the number of redundant writes to `vxrm` is a compiler and system specific issue.

NOTE: Control of the vector fixed-point saturation flag (`vxsat`) ^22^ is not yet covered in the vector intrinsics v1.0. We plan to support it in follow-up versions in a compatible way with existing intrinsics in v1.0.
[NOTE]
====
This version of the specification of does not cover the control of the vector fixed-point saturation flag (`vxsat`) ^22^. Support for this feature is planned for a later version of the specification in a way that is compatible with existing fixed-point intrinsics. No mechanism to set or retrieve the value of `vxsat` is specified either.

The value of the `vxsat` after a fixed-point intrinsic is UNSPECIFIED. This includes the order in which the flag `vxsat` is updated in a program that executes a sequence of fixed-point intrinsics.
====

[[control-of-frm]]
=== Control of floating-point rounding mode
Expand Down
Loading