Add isInsertSubreg property.

This patch adds a new property: isInsertSubreg and the related target hooks:
TargetIntrInfo::getInsertSubregInputs and
TargetInstrInfo::getInsertSubregLikeInputs to specify that a target specific
instruction is a (kind of) INSERT_SUBREG.

The approach is similar to r215394.

<rdar://problem/12702965>

llvm-svn: 216139

3 files changed, 3 insertions, 0 deletions

diff --git a/llvm/utils/TableGen/CodeGenInstruction.cpp b/llvm/utils/TableGen/CodeGenInstruction.cpp
index 20edef5a71c..d567ddea58b 100644
--- a/llvm/utils/TableGen/CodeGenInstruction.cpp
+++ b/llvm/utils/TableGen/CodeGenInstruction.cpp
@@ -316,6 +316,7 @@ CodeGenInstruction::CodeGenInstruction(Record *R)
   isNotDuplicable = R->getValueAsBit("isNotDuplicable");
   isRegSequence = R->getValueAsBit("isRegSequence");
   isExtractSubreg = R->getValueAsBit("isExtractSubreg");
+  isInsertSubreg = R->getValueAsBit("isInsertSubreg");
 
   bool Unset;
   mayLoad      = R->getValueAsBitOrUnset("mayLoad", Unset);
diff --git a/llvm/utils/TableGen/CodeGenInstruction.h b/llvm/utils/TableGen/CodeGenInstruction.h
index 649fbc29ce7..92aac5fed33 100644
--- a/llvm/utils/TableGen/CodeGenInstruction.h
+++ b/llvm/utils/TableGen/CodeGenInstruction.h
@@ -255,6 +255,7 @@ namespace llvm {
     bool isPseudo : 1;
     bool isRegSequence : 1;
     bool isExtractSubreg : 1;
+    bool isInsertSubreg : 1;
 
     std::string DeprecatedReason;
     bool HasComplexDeprecationPredicate;
diff --git a/llvm/utils/TableGen/InstrInfoEmitter.cpp b/llvm/utils/TableGen/InstrInfoEmitter.cpp
index 86578a84d96..6fdf22dd678 100644
--- a/llvm/utils/TableGen/InstrInfoEmitter.cpp
+++ b/llvm/utils/TableGen/InstrInfoEmitter.cpp
@@ -507,6 +507,7 @@ void InstrInfoEmitter::emitRecord(const CodeGenInstruction &Inst, unsigned Num,
   if (Inst.hasExtraDefRegAllocReq) OS << "|(1<<MCID::ExtraDefRegAllocReq)";
   if (Inst.isRegSequence) OS << "|(1<<MCID::RegSequence)";
   if (Inst.isExtractSubreg) OS << "|(1<<MCID::ExtractSubreg)";
+  if (Inst.isInsertSubreg) OS << "|(1<<MCID::InsertSubreg)";
 
   // Emit all of the target-specific flags...
   BitsInit *TSF = Inst.TheDef->getValueAsBitsInit("TSFlags");