[PATCH] D158778: [CUDA] Propagate __float128 support from the host.

[Artem Belevich via Phabricator via cfe-commits]

tra added a subscriber: jhuber6.
tra added a comment.

In D158778#4624408 <https://reviews.llvm.org/D158778#4624408>, @ABataev wrote:

> Just checks removal should be fine

Looks like OpenMP handles long double and __float128 differently -- it always insists on using the host's FP format for both.
https://github.com/llvm/llvm-project/blob/d037445f3a2c6dc1842b5bfc1d5d81988c2f223d/clang/lib/AST/ASTContext.cpp#L1674

This creates a divergence between what clang thinks and what LLVM can handle.
I'm not quite sure how it's supposed to work with NVPTX or AMDGPU, where we demote those types to double and can't generate code for the actual types.

@jhuber6 what does OpenMP expect to happen for those types on the GPU side?


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  https://reviews.llvm.org/D158778/new/

https://reviews.llvm.org/D158778