With -fpreserve-vec3-type enabled, a cast was not created when
converting from a non-vec3 type to a vec3 type, even though a
conversion to vec3 was performed. This resulted in creation of
invalid store instructions.
Differential Revision: https://reviews.llvm.org/D108470
With -fpreserve-vec3-type enabled, a cast was not created when
converting from a vec3 type to a non-vec3 type, even though a
conversion to vec4 was performed. This resulted in creation of
invalid store instructions.
Differential Revision: https://reviews.llvm.org/D107963
As mentioned in D93793, there are quite a few places where unary `IRBuilder::CreateShuffleVector(X, Mask)` can be used
instead of `IRBuilder::CreateShuffleVector(X, Undef, Mask)`.
Let's update them.
Actually, it would have been more natural if the patches were made in this order:
(1) let them use unary CreateShuffleVector first
(2) update IRBuilder::CreateShuffleVector to use poison as a placeholder value (D93793)
The order is swapped, but in terms of correctness it is still fine.
Reviewed By: spatel
Differential Revision: https://reviews.llvm.org/D93923