[llvm] [IR] Add zext nneg flag (PR #67982)

[via llvm-commits]

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@@ -6381,8 +6381,17 @@ int LLParser::parseInstruction(Instruction *&Inst, BasicBlock *BB,
   }
 
   // Casts.
+  case lltok::kw_zext: {
+    bool NonNeg = EatIfPresent(lltok::kw_nneg);
+    bool Res = parseCast(Inst, PFS, KeywordVal);
+    if (NonNeg)
+      Inst->setNonNeg();
+    if (Res != 0) {
+      return Res;
+    }
+    return 0;
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goldsteinn wrote:

`if (Res != 0) { return Res; } return 0;` == `return Res;`

https://github.com/llvm/llvm-project/pull/67982