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TableGen/SearchableTables: Cast enums to unsigned in generated code

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Summary:
This should fix signedness warnings when compiling with MSVC.

Change-Id: I4664cce0ba91e9b42d21a86fd4a7e82f2320c451

Reviewers: RKSimon

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D51097

llvm-svn: 340518
This commit is contained in:
Nicolai Haehnle 2018-08-23 08:02:02 +00:00
parent d04297e78d
commit 2785479daa
1 changed files with 9 additions and 0 deletions
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9
utils/TableGen/SearchableTableEmitter.cpp
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@ -430,6 +430,15 @@ void SearchableTableEmitter::emitLookupFunction(const GenericTable &Table,
<< ").compare(RHS." << Field.Name << ");\n";
OS << " if (Cmp" << Field.Name << " < 0) return true;\n";
OS << " if (Cmp" << Field.Name << " > 0) return false;\n";
} else if (Field.Enum) {
// Explicitly cast to unsigned, because the signedness of enums is
// compiler-dependent.
OS << " if ((unsigned)LHS." << Field.Name << " < (unsigned)RHS."
<< Field.Name << ")\n";
OS << " return true;\n";
OS << " if ((unsigned)LHS." << Field.Name << " > (unsigned)RHS."
<< Field.Name << ")\n";
OS << " return false;\n";
} else {
OS << " if (LHS." << Field.Name << " < RHS." << Field.Name << ")\n";
OS << " return true;\n";