Reorder and shrink size of NameLen field in diagnostic group table. Shaves ~4K from clang binary.
llvm-svn: 189445
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8a0caa8525
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@ -502,11 +502,8 @@ DiagnosticIDs::getDiagnosticLevel(unsigned DiagID, unsigned DiagClass,
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}
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struct clang::WarningOption {
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// Be safe with the size of 'NameLen' because we don't statically check if
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// the size will fit in the field; the struct size won't decrease with a
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// shorter type anyway.
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size_t NameLen;
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const char *NameStr;
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uint16_t NameLen;
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uint16_t Members;
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uint16_t SubGroups;
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@ -558,7 +555,9 @@ void DiagnosticIDs::getDiagnosticsInGroup(
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bool DiagnosticIDs::getDiagnosticsInGroup(
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StringRef Group,
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SmallVectorImpl<diag::kind> &Diags) const {
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WarningOption Key = { Group.size(), Group.data(), 0, 0 };
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if (Group.size() > UINT16_MAX)
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return true; // Option is too long to be one in the table.
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WarningOption Key = { Group.data(), (uint16_t)Group.size(), 0, 0 };
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const WarningOption *Found =
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std::lower_bound(OptionTable, OptionTable + OptionTableSize, Key,
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WarningOptionCompare);
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@ -35,11 +35,8 @@ namespace diagtool {
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struct GroupRecord {
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// Be safe with the size of 'NameLen' because we don't statically check if
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// the size will fit in the field; the struct size won't decrease with a
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// shorter type anyway.
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size_t NameLen;
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const char *NameStr;
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uint16_t NameLen;
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uint16_t Members;
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uint16_t SubGroups;
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@ -94,7 +94,12 @@ static int showGroup(llvm::raw_ostream &out, StringRef RootGroup,
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bool FlagsOnly) {
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ArrayRef<GroupRecord> AllGroups = getDiagnosticGroups();
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GroupRecord Key = { RootGroup.size(), RootGroup.data(), 0, 0 };
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if (RootGroup.size() > UINT16_MAX) {
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llvm::errs() << "No such diagnostic group exists\n";
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return 1;
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}
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GroupRecord Key = { RootGroup.data(), (uint16_t)RootGroup.size(), 0, 0 };
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const GroupRecord *Found =
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std::lower_bound(AllGroups.begin(), AllGroups.end(), Key);
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@ -681,7 +681,6 @@ void EmitClangDiagGroups(RecordKeeper &Records, raw_ostream &OS) {
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I = DiagsInGroup.begin(), E = DiagsInGroup.end(); I != E; ++I) {
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// Group option string.
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OS << " { ";
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OS << I->first.size() << ", ";
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OS << "\"";
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if (I->first.find_first_not_of("abcdefghijklmnopqrstuvwxyz"
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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@ -690,6 +689,9 @@ void EmitClangDiagGroups(RecordKeeper &Records, raw_ostream &OS) {
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I->first + "'");
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OS.write_escaped(I->first) << "\","
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<< std::string(MaxLen-I->first.size()+1, ' ');
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if (I->first.size() > UINT16_MAX)
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PrintFatalError("Diagnostic group name is too long for NameLen field.");
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OS << I->first.size() << ", ";
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// Special handling for 'pedantic'.
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const bool IsPedantic = I->first == "pedantic";
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