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[SYCL][DOC] Clarified device_global initialization #5203

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Dec 23, 2021
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[SYCL][DOC] Clarified device_global initialization #5203

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2 changes: 1 addition & 1 deletion sycl/doc/extensions/DeviceGlobal/SYCL_INTEL_device_global.asciidoc
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Expand Up @@ -183,7 +183,7 @@ _T_ is restricted to types that have a trivial destructor and a trivial default

Since _T_ is restricted to types with trivial default constructors in this version of the specification, there are no non-default `device_global` constructors, and therefore no initialization values may be specified for the content of a `device_global` allocation on a device.

The allocation of type _T_ is zero-initialized on each device prior to the first access to that `device_global` variable.
The allocation of type _T_ for a given `device_global` is zero-initialized on a given device prior to the first access to that `device_global` on that device. For the purposes of this definition an access can be a direct access of the `device_global` in kernel code or a copy to or from that `device_global` enqueued to the given device.

Properties may be specified for a `device_global` to provide semantic
modification or optimization hint information to the compiler. See the section
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