[clang] [CUDA] Add support for sm101 target architecture (Tegra Blackwell) (PR #127187)

[Artem Belevich via cfe-commits]

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@@ -21,6 +21,10 @@ class SM<string version, list<SMFeatures> newer_list> : SMFeatures {
                         !strconcat(f, "|", newer.Features));
 }
 
+let Features = "sm_101a" in def SM_101a : SMFeatures;
+
+def SM_101 : SM<"101", [SM_101a]>;
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Artem-B wrote:

This needs some changes.

First, we now have sm120 and 120a and those should be added, too.

Second, the idea here is that for each `def SM_X we need to list other SMs that are its superset`.
When you add a new SM, you need to update the previous most recent SM to include the new one.

E.g.
```
def SM_101 : SM<"101", [SM_101a]>;
def SM_100 : SM<"100", [SM_101, SM_100a]>;
def SM_90 : SM<"90", [SM_100, SM_90a]>;
```

https://github.com/llvm/llvm-project/pull/127187