[clang] [llvm] [ARM][KCFI] Add backend support for Kernel Control-Flow Integrity (PR #163698)

[David Green via cfe-commits]

================
@@ -6535,6 +6535,15 @@ def CMP_SWAP_64 : PseudoInst<(outs GPRPair:$Rd, GPRPair:$addr_temp_out),
 
 def : Pat<(atomic_fence (timm), 0), (MEMBARRIER)>;
 
+//===----------------------------------------------------------------------===//
+// KCFI check pseudo-instruction.
+//===----------------------------------------------------------------------===//
+let isPseudo = 1 in {
----------------
davemgreen wrote:

Does this need isPseudo = 1 if it is a PseudoInst?

https://github.com/llvm/llvm-project/pull/163698