[CHERI] Fix the size limit of PseudoCLGC

Because this can become a three instruction sequence of AUIPCC + CIncOffset + CSetBounds, the maximum size is 12 rather than 8.

Author: resistor

llvm/lib/Target/RISCV/RISCVInstrInfoXCheri.td

@@ -1342,9 +1342,10 @@ def : Pat<(riscv_cllc tjumptable:$in), (PseudoCLLC tjumptable:$in)>;
 def : Pat<(riscv_cllc tconstpool:$in), (PseudoCLLC tconstpool:$in)>;
 
 let hasSideEffects = 0, mayLoad = 1, mayStore = 0, isCodeGenOnly = 0,
-    isAsmParserOnly = 1, Size = 8 in
-def PseudoCLGC : Pseudo<(outs GPCR:$dst), (ins bare_symbol:$src), [],
-                        "clgc", "$dst, $src">;
+    isAsmParserOnly = 1,
+    Size = 12 in def PseudoCLGC
+    : Pseudo<(outs GPCR:$dst), (ins bare_symbol:$src), [], "clgc",
+             "$dst, $src">;
 
 def : Pat<(riscv_clgc tglobaladdr:$in), (PseudoCLGC tglobaladdr:$in)>;