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Make intrinsics available in function scope #214

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Make intrinsics available in function scope #214

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13 changes: 13 additions & 0 deletions main/acle.md
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Expand Up @@ -316,6 +316,10 @@ Armv8.4-A [[ARMARMv84]](#ARMARMv84). Support is added for the Dot Product intrin
* added `FEAT_LS64*`.
* Added feature detection macro `__ARM_FEATURE_RCPC` for RCpc (Release Consistent processor consistent) model at [RCpc](#rcpc).

#### Changes for next release

* Add intrinsics availability to function scope.

### References

This document refers to the following documents.
Expand Down Expand Up @@ -700,6 +704,15 @@ ACLE standardizes intrinsics to access various features of the
Arm ® architecture. It also standardizes a set of [header
files](#header-files) that provide access to these intrinsics.

Availability of a given intrinsics is indicated by the corresponding
`_ARM_FEATURE_` macro, as detailed in the [Feature test
macros](#feature-test-macros) section. A given architecture feature could
be enabled in function scope, for example with the `target` or
[`target_version`](#function-multi-versioning) attributes. If an
implementation supports such then the related intrinsics of the enabled
architecture feature must be available in that scope via the standard
header files.

Whether intrinsics are macros, functions or built-in operators is
unspecified. For example:

Expand Down