The problem with radeonsi+ACO is that UBO loads from vec4 uniforms using only 1 component always load all 4 components. This fixes that. We are only interested in shrinking UBO and SSBO loads, but I added more intrinsics because why not. Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29384>