[TensorExpr] LLVMCodegen: fix lowering for UInt->Float casts. (#64862)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/64862
Previously we erroneously were looking at dst signedness. This was
discovered when we tried to implement quantize/dequantize ops.
Test Plan: Imported from OSS
Reviewed By: navahgar
Differential Revision: D30881696
Pulled By: ZolotukhinM
fbshipit-source-id: 34af842e5e52a3b6b5d2e70c4ef32f910a20341f
Author
Mikhail Zolotukhin
