[llvm] [NVPTX] Fix crash caused by ComputePTXValueVTs (PR #104524)

[Artem Belevich via llvm-commits]

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@@ -0,0 +1,45 @@
+; RUN: llc < %s -march=nvptx64 -mcpu=sm_20
+
+define <6 x half> @half6() {
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Artem-B wrote:

We may as well auto-generate the checks to make sure we're still generating sensible PTX for those oddly shaped vectors.

https://github.com/llvm/llvm-project/pull/104524