[llvm] [FileCheck] Fix --enable-var-scope for numvars after reassignment (PR #157158)

[Thomas Preud'homme via llvm-commits]

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@@ -1218,6 +1218,8 @@ Pattern::MatchResult Pattern::match(StringRef Buffer,
     StringRef MatchedValue = MatchInfo[CaptureParenGroup];
     ExpressionFormat Format = DefinedNumericVariable->getImplicitFormat();
     APInt Value = Format.valueFromStringRepr(MatchedValue, SM);
+    Context->GlobalNumericVariableTable.try_emplace(NumericVariableDef.getKey(),
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RoboTux wrote:

Please add a comment here to explain why it needs to be added despite this being already done in the parsing. Mention the clearLocalVars() function.

https://github.com/llvm/llvm-project/pull/157158