disasm-test: Avoid llvm-as from crashing on mixed opaque/non-opaque p…

…ointers

This bumps the `llvm-pretty` submodule to bring in the `fixupOpaquePtrs`
function from GaloisInc/llvm-pretty#110 and use it in the `disasm-test` test
suite. This is needed because we must give pretty-printed `llvm-pretty` ASTs to
`llvm-as`, which strictly forbids mixing opaque and non-opaque pointers. See #177.

disasm-test/Main.hs

@@ -209,6 +209,7 @@ cube = TS.mkCUBE
                                            , "at-least-llvm12"
                                            , "at-least-llvm13"
                                            , "at-least-llvm14"
+                                           , "at-least-llvm15"
                                            ])
                      ]
     -- Somewhat unusually for tasty-sugar, we make the expectedSuffix the same
@@ -369,11 +370,12 @@ processBitCode _keep (Roundtrip roundtrip) pfx file = do
   case e of
     Left err -> X.throwIO (ParseError err)
     Right m  -> do
-      parsed <- printToTempFile "ll" (show (ppLLVM (ppModule m)))
+      let m' = AST.fixupOpaquePtrs m
+      parsed <- printToTempFile "ll" (show (ppLLVM (ppModule m')))
       -- stripComments _keep parsed
       if roundtrip
       then do
-        tmp2 <- printToTempFile "ast" (ppShow (normalizeModule m))
+        tmp2 <- printToTempFile "ast" (ppShow (normalizeModule m'))
         return (parsed, Just tmp2)
       else return (parsed, Nothing)