diff options
Diffstat (limited to 'llvm/utils/TableGen/Common/CodeGenRegisters.cpp')
| -rw-r--r-- | llvm/utils/TableGen/Common/CodeGenRegisters.cpp | 21 |
1 files changed, 9 insertions, 12 deletions
diff --git a/llvm/utils/TableGen/Common/CodeGenRegisters.cpp b/llvm/utils/TableGen/Common/CodeGenRegisters.cpp index e873b3eaa4b7..8d0ec9abd23a 100644 --- a/llvm/utils/TableGen/Common/CodeGenRegisters.cpp +++ b/llvm/utils/TableGen/Common/CodeGenRegisters.cpp @@ -744,7 +744,7 @@ CodeGenRegisterClass::CodeGenRegisterClass(CodeGenRegBank &RegBank, RSI.insertRegSizeForMode(DefaultMode, RI); } - CopyCost = R->getValueAsInt("CopyCost"); + int CopyCostParsed = R->getValueAsInt("CopyCost"); Allocatable = R->getValueAsBit("isAllocatable"); AltOrderSelect = R->getValueAsString("AltOrderSelect"); int AllocationPriority = R->getValueAsInt("AllocationPriority"); @@ -757,6 +757,14 @@ CodeGenRegisterClass::CodeGenRegisterClass(CodeGenRegBank &RegBank, const BitsInit *TSF = R->getValueAsBitsInit("TSFlags"); for (auto [Idx, Bit] : enumerate(TSF->getBits())) TSFlags |= uint8_t(cast<BitInit>(Bit)->getValue()) << Idx; + + // Saturate negative costs to the maximum + if (CopyCostParsed < 0) + CopyCost = std::numeric_limits<uint8_t>::max(); + else if (!isUInt<8>(CopyCostParsed)) + PrintFatalError(R->getLoc(), "'CopyCost' must be an 8-bit value"); + + CopyCost = CopyCostParsed; } // Create an inferred register class that was missing from the .td files. @@ -849,17 +857,6 @@ unsigned CodeGenRegisterClass::getWeight(const CodeGenRegBank &RegBank) const { return (*Members.begin())->getWeight(RegBank); } -namespace llvm { - -raw_ostream &operator<<(raw_ostream &OS, const CodeGenRegisterClass::Key &K) { - OS << "{ " << K.RSI; - for (const auto R : *K.Members) - OS << ", " << R->getName(); - return OS << " }"; -} - -} // end namespace llvm - // This is a simple lexicographical order that can be used to search for sets. // It is not the same as the topological order provided by TopoOrderRC. bool CodeGenRegisterClass::Key::operator<( |