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Make HCC ignore register keyword

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- (previously would emit a warning)
- Also tweak documentation.

Change-Id: I0f4f00f82f8cc53d420112570f2d7675535e6aea


[ROCm/clr commit: b9e48d6066]
This commit is contained in:
Ben Sander
2016-07-25 10:15:02 -05:00
parent e207805f81
commit 4094170fd7
5 changed files with 9 additions and 5 deletions
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projects/clr/hipamd/docs/markdown/hip_kernel_language.md
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@@ -628,12 +628,12 @@ The compiler ensures that the kernel uses fewer registers than both allowed maxi
HIP/hcc will parse the `launch_bounds` attribute but silently ignores the performance hint. Full support is under development.
The hcc compiler does not support the "--maxregcount" option like nvcc. Instead, users are encouraged to use the hip_launch_bounds directive since the parameters are more intuitive and portable than
Unlike nvcc, hcc does not support the "--maxregcount" option. Instead, users are encouraged to use the hip_launch_bounds directive since the parameters are more intuitive and portable than
micro-architecture details like registers, and also the directive allows per-kernel control rather than an entire file. hip_launch_bounds works on both hcc and nvcc targets.
## Register Keyword
The register keyword affects code generation in neither nvcc nor hcc. It’s deprecated in standard C++, so hcc will generate a warning. (nvcc silently ignores use of this keyword.) To disable the warning, you can pass the option `-Wno-deprecated-register` to hcc.
The register keyword is deprecated in C++, and is silently ignored by both nvcc and hcc. To see warnings, you can pass the option `-Wdeprecated-register` to hcc.
## Pragma Unroll