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Aug 5, 2022
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Update the ARM64EC-related predefined macros #4081

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12 changes: 7 additions & 5 deletions docs/preprocessor/predefined-macros.md
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Expand Up @@ -4,9 +4,9 @@ description: "Lists and describes the Microsoft C++ compiler predefined preproce
ms.custom: "update_every_version"
ms.date: 07/07/2022
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ms.assetid: 1cc5f70a-a225-469c-aed0-fe766238e23f
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---
# Predefined macros

Expand Down Expand Up @@ -188,7 +188,7 @@ MSVC supports these additional predefined macros.

- `_KERNEL_MODE` Defined as 1 if the [**`/kernel`** (Create Kernel Mode Binary)](../build/reference/kernel-create-kernel-mode-binary.md) compiler option is set. Otherwise, undefined.

- `_M_AMD64` Defined as the integer literal value 100 for compilations that target x64 processors. Otherwise, undefined.
- `_M_AMD64` Defined as the integer literal value 100 for compilations that target x64 processors or ARM64EC. Otherwise, undefined.

- `_M_ARM` Defined as the integer literal value 7 for compilations that target ARM processors. Undefined for ARM64, ARM64EC, and other targets.

Expand All @@ -202,7 +202,9 @@ MSVC supports these additional predefined macros.

- For more information, see [**`/arch`** (ARM)](../build/reference/arch-arm.md).

- `_M_ARM64` Defined as 1 for compilations that target 64-bit ARM processors. Otherwise, undefined.
- `_M_ARM64` Defined as 1 for compilations that target ARM64. Otherwise, undefined.

- `_M_ARM64EC` Defined as 1 for compilations that target ARM64EC. Otherwise, undefined.

- `_M_CEE` Defined as 001 if any [**`/clr`** (Common Language Runtime Compilation)](../build/reference/clr-common-language-runtime-compilation.md) compiler option is set. Otherwise, undefined.

Expand Down Expand Up @@ -232,7 +234,7 @@ MSVC supports these additional predefined macros.

- For more information, see [**`/arch`** (x86)](../build/reference/arch-x86.md).

- `_M_X64` Defined as the integer literal value 100 for compilations that target x64 processors. Otherwise, undefined.
- `_M_X64` Defined as the integer literal value 100 for compilations that target x64 processors or ARM64EC. Otherwise, undefined.

- `_MANAGED` Defined as 1 when the [`/clr`](../build/reference/clr-common-language-runtime-compilation.md) compiler option is set. Otherwise, undefined.

Expand Down