update hip_porting_guide regarding platform depended macros

Change-Id: I3029c6ae6cb280500bba294925ed6e9dc9dcc94d


[ROCm/clr commit: ae1c6ee68a]
This commit is contained in:
pensun
2017-02-28 07:33:01 -06:00
parent ee3f396aab
commit e5bf4ec700
@@ -166,7 +166,7 @@ Both nvcc and hcc make two passes over the code: one for host code and one for d
```
// #ifdef __CUDA_ARCH__
#ifdef __HIP_DEVICE_COMPILE__
#ifdef __HIP_DEVICE_COMPILE__ && (__HIP_DEVICE_COMPILE__ == 1)
```
Unlike `__CUDA_ARCH__`, the `__HIP_DEVICE_COMPILE__` value is 0 or 1, and it doesn’t represent the feature capability of the target device.
@@ -182,7 +182,7 @@ Unlike `__CUDA_ARCH__`, the `__HIP_DEVICE_COMPILE__` value is 0 or 1, and it doe
|`__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__` | Undefined | Defined if compiling for Cuda device; undefined otherwise | Undefined
|`__CUDACC__` | Undefined | 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
|hcc-related defines:|