diff options
| -rw-r--r-- | utils/TableGen/DAGISelEmitter.cpp | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/utils/TableGen/DAGISelEmitter.cpp b/utils/TableGen/DAGISelEmitter.cpp index 4351352..aad21fe 100644 --- a/utils/TableGen/DAGISelEmitter.cpp +++ b/utils/TableGen/DAGISelEmitter.cpp @@ -175,12 +175,33 @@ struct PatternSortingPredicate { } }; -/// getRegisterValueType - Look up and return the first ValueType of specified -/// RegisterClass record +/// getRegisterValueType - Look up and return the ValueType of the specified +/// register. If the register is a member of multiple register classes which +/// have different associated types, return MVT::Other. static MVT::SimpleValueType getRegisterValueType(Record *R, const CodeGenTarget &T) { - if (const CodeGenRegisterClass *RC = T.getRegisterClassForRegister(R)) - return RC->getValueTypeNum(0); - return MVT::Other; + int FoundRC = 0; + MVT::SimpleValueType VT = MVT::Other; + const std::vector<CodeGenRegisterClass> &RCs = T.getRegisterClasses(); + std::vector<CodeGenRegisterClass>::const_iterator RC; + std::vector<Record*>::const_iterator Element; + + for (RC = RCs.begin() ; RC != RCs.end() ; RC++) { + Element = find((*RC).Elements.begin(), (*RC).Elements.end(), R); + if (Element != (*RC).Elements.end()) { + if (!FoundRC) { + FoundRC = 1; + VT = (*RC).getValueTypeNum(0); + } else { + // In multiple RC's + if (VT != (*RC).getValueTypeNum(0)) { + // Types of the RC's do not agree. Return MVT::Other. The + // target is responsible for handling this. + return MVT::Other; + } + } + } + } + return VT; } |