Add isRegSequence property.

This patch adds a new property: isRegSequence and the related target hooks: 
TargetIntrInfo::getRegSequenceInputs and 
TargetInstrInfo::getRegSequenceLikeInputs to specify that a target specific
instruction is a (kind of) REG_SEQUENCE.

<rdar://problem/12702965>

llvm-svn: 215394

3 files changed, 3 insertions, 0 deletions

diff --git a/llvm/utils/TableGen/CodeGenInstruction.cpp b/llvm/utils/TableGen/CodeGenInstruction.cpp
index 1e8daf5b09b..179858d7632 100644
--- a/llvm/utils/TableGen/CodeGenInstruction.cpp
+++ b/llvm/utils/TableGen/CodeGenInstruction.cpp
@@ -314,6 +314,7 @@ CodeGenInstruction::CodeGenInstruction(Record *R)
   hasPostISelHook = R->getValueAsBit("hasPostISelHook");
   hasCtrlDep   = R->getValueAsBit("hasCtrlDep");
   isNotDuplicable = R->getValueAsBit("isNotDuplicable");
+  isRegSequence = R->getValueAsBit("isRegSequence");
 
   bool Unset;
   mayLoad      = R->getValueAsBitOrUnset("mayLoad", Unset);
diff --git a/llvm/utils/TableGen/CodeGenInstruction.h b/llvm/utils/TableGen/CodeGenInstruction.h
index f143875131b..59a4d2177ee 100644
--- a/llvm/utils/TableGen/CodeGenInstruction.h
+++ b/llvm/utils/TableGen/CodeGenInstruction.h
@@ -253,6 +253,7 @@ namespace llvm {
     bool hasExtraDefRegAllocReq : 1;
     bool isCodeGenOnly : 1;
     bool isPseudo : 1;
+    bool isRegSequence : 1;
 
     std::string DeprecatedReason;
     bool HasComplexDeprecationPredicate;
diff --git a/llvm/utils/TableGen/InstrInfoEmitter.cpp b/llvm/utils/TableGen/InstrInfoEmitter.cpp
index e625394b8e8..edd2f1f0e3c 100644
--- a/llvm/utils/TableGen/InstrInfoEmitter.cpp
+++ b/llvm/utils/TableGen/InstrInfoEmitter.cpp
@@ -505,6 +505,7 @@ void InstrInfoEmitter::emitRecord(const CodeGenInstruction &Inst, unsigned Num,
   if (Inst.isAsCheapAsAMove)   OS << "|(1<<MCID::CheapAsAMove)";
   if (Inst.hasExtraSrcRegAllocReq) OS << "|(1<<MCID::ExtraSrcRegAllocReq)";
   if (Inst.hasExtraDefRegAllocReq) OS << "|(1<<MCID::ExtraDefRegAllocReq)";
+  if (Inst.isRegSequence) OS << "|(1<<MCID::RegSequence)";
 
   // Emit all of the target-specific flags...
   BitsInit *TSF = Inst.TheDef->getValueAsBitsInit("TSFlags");