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If a user requests help, give them help on both features and processors
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23905 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -123,31 +123,42 @@ static const SubtargetFeatureKV *Find(const std::string &S,
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return F;
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}
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/// getLongestEntryLength - Return the length of the longest entry in the table.
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///
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static size_t getLongestEntryLength(const SubtargetFeatureKV *Table,
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size_t Size) {
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size_t MaxLen = 0;
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for (size_t i = 0; i < Size; i++)
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MaxLen = std::max(MaxLen, std::strlen(Table[i].Key));
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return MaxLen;
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}
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/// Display help for feature choices.
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///
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static void Help(bool isFeature, const SubtargetFeatureKV *Table,
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size_t TableSize) {
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// Determine the length of the longest key.
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size_t MaxLen = 0;
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for (size_t i = 0; i < TableSize; i++)
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MaxLen = std::max(MaxLen, std::strlen(Table[i].Key));
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std::cerr << "Available " << (isFeature ? "features" : "CPUs")
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<< " for this target:\n\n";
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for (size_t i = 0; i < TableSize; i++) {
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// Compute required padding
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size_t Pad = MaxLen - std::strlen(Table[i].Key);
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std::cerr << Table[i].Key << std::string(Pad, ' ') << " - "
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<< Table[i].Desc << ".\n";
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}
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static void Help(const SubtargetFeatureKV *CPUTable, size_t CPUTableSize,
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const SubtargetFeatureKV *FeatTable, size_t FeatTableSize) {
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// Determine the length of the longest CPU and Feature entries.
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unsigned MaxCPULen = getLongestEntryLength(CPUTable, CPUTableSize);
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unsigned MaxFeatLen = getLongestEntryLength(FeatTable, FeatTableSize);
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// Print the CPU table.
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std::cerr << "Available CPUs for this target:\n\n";
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for (size_t i = 0; i != CPUTableSize; i++)
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std::cerr << " " << CPUTable[i].Key
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<< std::string(MaxCPULen - std::strlen(CPUTable[i].Key), ' ')
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<< " - " << CPUTable[i].Desc << ".\n";
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std::cerr << "\n";
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if (isFeature) {
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std::cerr
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<< "Use +feature to enable a feature, or -feature to disable it.\n"
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<< "For example, llc -mcpu=mycpu -mattr=+feature1,-feature2\n";
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}
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// Print the Feature table.
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std::cerr << "Available features for this target:\n\n";
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for (size_t i = 0; i != FeatTableSize; i++)
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std::cerr << " " << FeatTable[i].Key
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<< std::string(MaxFeatLen - std::strlen(FeatTable[i].Key), ' ')
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<< " - " << FeatTable[i].Desc << ".\n";
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std::cerr << "\n";
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std::cerr << "Use +feature to enable a feature, or -feature to disable it.\n"
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<< "For example, llc -mcpu=mycpu -mattr=+feature1,-feature2\n";
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exit(1);
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}
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@ -203,10 +214,13 @@ uint32_t SubtargetFeatures::Parse(const std::string &String,
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uint32_t Bits = 0; // Resulting bits
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// Split up features
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Split(Features, String);
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// Check if default is needed
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if (Features[0].empty()) Features[0] = DefaultCPU;
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// Check for help
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if (Features[0] == "help") Help(false, CPUTable, CPUTableSize);
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if (Features[0].empty())
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Features[0] = DefaultCPU;
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else if (Features[0] == "help")
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Help(CPUTable, CPUTableSize, FeatureTable, FeatureTableSize);
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// Find CPU entry
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const SubtargetFeatureKV *CPUEntry =
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Find(Features[0], CPUTable, CPUTableSize);
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@ -222,10 +236,12 @@ uint32_t SubtargetFeatures::Parse(const std::string &String,
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}
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// Iterate through each feature
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for (size_t i = 1; i < Features.size(); i++) {
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// Get next feature
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const std::string &Feature = Features[i];
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// Check for help
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if (Feature == "+help") Help(true, FeatureTable, FeatureTableSize);
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if (Feature == "+help")
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Help(CPUTable, CPUTableSize, FeatureTable, FeatureTableSize);
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// Find feature in table.
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const SubtargetFeatureKV *FeatureEntry =
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Find(StripFlag(Feature), FeatureTable, FeatureTableSize);
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