[PATCH] D12067: AMDGPU: Refactor exp instructions

[Axel Davy via llvm-commits]

axeldavy added a subscriber: axeldavy.
axeldavy added a comment.

I think the DONE bit should be added at one of the last passes of compilation.

Especially we want to be free at Scheduling step to move around the exp instructions and have them the order we want.
I guess the export may take some time, so earlier the exp, the best.

We can also introduce in the SI scheduler some way to incitate to have the position exports first for vertex shaders.


http://reviews.llvm.org/D12067