[llvm] [IR] Autoupgrade trivial VP intrinsics to their non-VP counterparts (PR #212490)

[Craig Topper via llvm-commits]

================
@@ -1288,6 +1288,45 @@ static bool consumeNVVMPtrAddrSpace(StringRef &Name) {
          Name.consume_front("param");
 }
 
+static bool shouldUpgradeVPIntrinsic(StringRef Name) {
+  // Avoid cttz.elts clashing with cttz.
+  if (Name.starts_with("vp.cttz.elts"))
+    return false;
+  return Name.starts_with("vp.select") || Name.starts_with("vp.add") ||
----------------
topperc wrote:

Should we do a consume_front("vp.") first to shorten all of these strings?

https://github.com/llvm/llvm-project/pull/212490