[llvm] [NVPTX] Don't use underlying alignment to align param (PR #96793)

[Fraser Cormack via llvm-commits]

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@@ -69,3 +69,39 @@ define ptx_device void @t6() {
   call void %fp(ptr byval(i8) null);
   ret void
 }
+
+; CHECK: .func check_ptr_align1(
+; CHECK: 	ld.param.u64 	%rd1
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frasercrmck wrote:

I'm presuming there's still a split store to this ptr? Should we also CHECK for that so we can demonstrate that alignment of the pointer is being taken into account?

https://github.com/llvm/llvm-project/pull/96793