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IEEE 754 rounding modes #73

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jglaser opened this issue Nov 28, 2019 · 2 comments
Open

IEEE 754 rounding modes #73

jglaser opened this issue Nov 28, 2019 · 2 comments
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device-libs Related to Device Libraries

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@jglaser
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jglaser commented Nov 28, 2019

I noticed that __fsub_add_ru and friends are not supported in HIP, because they were disabled in the device-lib a while ago. What would it take to re-enable IEEE 754 rounding modes (up/down) for single precision floats again?
@b-sumner
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To start with, a lot of work on LLVM whose IR cannot currently describe non-default-rounded operations. Then additional work on the AMDGPU target to support the updated IR.

@jglaser jglaser mentioned this issue Nov 28, 2019
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@dgaliffiAMD dgaliffiAMD added the device-libs Related to Device Libraries label May 4, 2024
@lamb-j lamb-j transferred this issue from ROCm/ROCm-Device-Libs May 6, 2024
@b-sumner
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b-sumner commented May 6, 2024

We could enable some now, but unfortunately not all. Which ones are the most important?

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