[llvm] [TableGen, CodeGen, CHERI] Add support for the cPTR wildcard value type. (PR #158426)

[Owen Anderson via llvm-commits]

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@@ -3295,6 +3305,36 @@ const Record *CodeGenDAGPatterns::getSDNodeNamed(StringRef Name) const {
   return N;
 }
 
+// Compute the subset of iPTR and cPTR legal for each mode, coalescing into the
+// default mode where possible to avoid predicate explosion.
+TypeSetByHwMode CodeGenDAGPatterns::ComputeLegalPtrTypes() const {
+  auto LegalPtrsForSet = [](const MachineValueTypeSet &In) {
+    MachineValueTypeSet Out;
+    Out.insert(MVT::iPTR);
+    for (MVT T : MVT::cheri_capability_valuetypes()) {
+      if (In.count(T)) {
+        Out.insert(MVT::cPTR);
+        break;
+      }
+    }
+    return Out;
+  };
+
+  const auto &LegalTypes = getLegalTypes();
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resistor wrote:

Done

https://github.com/llvm/llvm-project/pull/158426