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neon60 committed May 23, 2024
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Expand Up @@ -156,22 +156,22 @@ Unlike `__CUDA_ARCH__`, the `__HIP_DEVICE_COMPILE__` value is 1 or undefined, an
### Compiler Defines: Summary
|Define | HIP-Clang | nvcc | Other (GCC, ICC, Clang, etc.)
|--- | --- | --- |---|
|HIP-related defines:|
|`__HIP_PLATFORM_AMD__`| Defined | Undefined | Defined if targeting AMD platform; undefined otherwise |
|`__HIP_PLATFORM_NVIDIA__`| Undefined | Defined | Defined if targeting NVIDIA platform; undefined otherwise |
|`__HIP_DEVICE_COMPILE__` | 1 if compiling for device; undefined if compiling for host |1 if compiling for device; undefined if compiling for host | Undefined
|`__HIPCC__` | Defined | Defined | Undefined
|`__HIP_ARCH_*` |0 or 1 depending on feature support (see below) | 0 or 1 depending on feature support (see below) | 0
|nvcc-related defines:|
|`__CUDACC__` | Defined if source code is compiled by nvcc; undefined otherwise | Undefined
|`__NVCC__` | Undefined | Defined | Undefined
|`__CUDA_ARCH__` | Undefined | Unsigned representing compute capability (e.g., "130") if in device code; 0 if in host code | Undefined
|Define | HIP-Clang | NVCC | Other (GCC, ICC, Clang, etc.)
|--- | --- | --- |--- |
|HIP-related defines: |
|`__HIP_PLATFORM_AMD__` | Defined | Undefined | Defined if targeting AMD platform; undefined otherwise |
|`__HIP_PLATFORM_NVIDIA__` | Undefined | Defined | Defined if targeting NVIDIA platform; undefined otherwise |
|`__HIP_DEVICE_COMPILE__` | 1 if compiling for device; undefined if compiling for host | 1 if compiling for device; undefined if compiling for host | Undefined
|`__HIPCC__` | Defined | Defined | Undefined

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|`__HIP_ARCH_*` | 0 or 1 depending on feature support (see below) | 0 or 1 depending on feature support (see below) | 0
|nvcc-related defines: |
|`__CUDACC__` | Defined if source code is compiled by nvcc; undefined otherwise | Undefined

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|`__NVCC__` | Undefined | Defined | Undefined

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|`__CUDA_ARCH__` | Undefined | Unsigned representing compute capability (e.g., "130") if in device code; 0 if in host code | Undefined

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|hip-clang-related defines:|
|`__HIP__` | Defined | Undefined | Undefined
|HIP-Clang common defines:|
|`__clang__` | Defined | Defined | Undefined | Defined if using Clang; otherwise undefined
|`__HIP__` | Defined | Undefined | Undefined

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|HIP-Clang common defines: |
|`__clang__` | Defined | Defined | Undefined | Defined if using Clang; otherwise undefined

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## Identifying Architecture Features
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