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Update x64-calling-convention.md #4606

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2 changes: 2 additions & 0 deletions docs/build/x64-calling-convention.md
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Expand Up @@ -7,6 +7,8 @@ ms.date: 05/17/2022

This section describes the standard processes and conventions that one function (the caller) uses to make calls into another function (the callee) in x64 code.

For more information on the `__vectorcall` calling convention, see [__vectorcall](../cpp/vectorcall.md).

## Calling convention defaults

The x64 Application Binary Interface (ABI) uses a four-register fast-call calling convention by default. Space is allocated on the call stack as a shadow store for callees to save those registers.
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