Add DEBUG_VALUE. Not used yet.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93030 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Target/Target.td

@@ -477,6 +477,14 @@ def COPY_TO_REGCLASS : Instruction {
   let neverHasSideEffects = 1;
   let isAsCheapAsAMove = 1;
 }
+def DEBUG_VALUE : Instruction {
+  let OutOperandList = (ops);
+  let InOperandList = (ops unknown:$value, i64imm:$offset, unknown:$meta);
+  let AsmString = "DEBUG_VALUE";
+  let Namespace = "TargetInstrInfo";
+  let neverHasSideEffects = 1;
+  let isAsCheapAsAMove = 1;
+}
 }
 
 //===----------------------------------------------------------------------===//

include/llvm/Target/TargetInstrInfo.h

@@ -88,7 +88,10 @@ public:
     /// only needed in cases where the register classes implied by the
     /// instructions are insufficient. The actual MachineInstrs to perform
     /// the copy are emitted with the TargetInstrInfo::copyRegToReg hook.
-    COPY_TO_REGCLASS = 10
+    COPY_TO_REGCLASS = 10,
+
+    // DEBUG_VALUE - a mapping of the llvm.dbg.value intrinsic
+    DEBUG_VALUE = 11
   };
 
   unsigned getNumOpcodes() const { return NumOpcodes; }

utils/TableGen/CodeEmitterGen.cpp

@@ -34,7 +34,8 @@ void CodeEmitterGen::reverseBits(std::vector<Record*> &Insts) {
         R->getName() == "INSERT_SUBREG" ||
         R->getName() == "IMPLICIT_DEF" ||
         R->getName() == "SUBREG_TO_REG" ||
-        R->getName() == "COPY_TO_REGCLASS") continue;
+        R->getName() == "COPY_TO_REGCLASS" ||
+        R->getName() == "DEBUG_VALUE") continue;
 
     BitsInit *BI = R->getValueAsBitsInit("Inst");
 
@@ -111,7 +112,8 @@ void CodeEmitterGen::run(raw_ostream &o) {
         R->getName() == "INSERT_SUBREG" ||
         R->getName() == "IMPLICIT_DEF" ||
         R->getName() == "SUBREG_TO_REG" ||
-        R->getName() == "COPY_TO_REGCLASS") {
+        R->getName() == "COPY_TO_REGCLASS" ||
+        R->getName() == "DEBUG_VALUE") {
       o << "    0U,\n";
       continue;
     }
@@ -149,7 +151,8 @@ void CodeEmitterGen::run(raw_ostream &o) {
         InstName == "INSERT_SUBREG" ||
         InstName == "IMPLICIT_DEF" ||
         InstName == "SUBREG_TO_REG" ||
-        InstName == "COPY_TO_REGCLASS") continue;
+        InstName == "COPY_TO_REGCLASS" ||
+        InstName == "DEBUG_VALUE") continue;
 
     BitsInit *BI = R->getValueAsBitsInit("Inst");
     const std::vector<RecordVal> &Vals = R->getValues();

utils/TableGen/CodeGenTarget.cpp

@@ -337,6 +337,11 @@ getInstructionsByEnumValue(std::vector<const CodeGenInstruction*>
     throw "Could not find 'COPY_TO_REGCLASS' instruction!";
   const CodeGenInstruction *COPY_TO_REGCLASS = &I->second;
 
+  I = getInstructions().find("DEBUG_VALUE");
+  if (I == Instructions.end())
+    throw "Could not find 'DEBUG_VALUE' instruction!";
+  const CodeGenInstruction *DEBUG_VALUE = &I->second;
+
   // Print out the rest of the instructions now.
   NumberedInstructions.push_back(PHI);
   NumberedInstructions.push_back(INLINEASM);
@@ -349,6 +354,7 @@ getInstructionsByEnumValue(std::vector<const CodeGenInstruction*>
   NumberedInstructions.push_back(IMPLICIT_DEF);
   NumberedInstructions.push_back(SUBREG_TO_REG);
   NumberedInstructions.push_back(COPY_TO_REGCLASS);
+  NumberedInstructions.push_back(DEBUG_VALUE);
   for (inst_iterator II = inst_begin(), E = inst_end(); II != E; ++II)
     if (&II->second != PHI &&
         &II->second != INLINEASM &&
@@ -360,7 +366,8 @@ getInstructionsByEnumValue(std::vector<const CodeGenInstruction*>
         &II->second != INSERT_SUBREG &&
         &II->second != IMPLICIT_DEF &&
         &II->second != SUBREG_TO_REG &&
-        &II->second != COPY_TO_REGCLASS)
+        &II->second != COPY_TO_REGCLASS &&
+        &II->second != DEBUG_VALUE)
       NumberedInstructions.push_back(&II->second);
 }
 

utils/TableGen/InstrInfoEmitter.cpp

@@ -345,7 +345,8 @@ void InstrInfoEmitter::emitShiftedValue(Record *R, StringInit *Val,
         R->getName() != "INSERT_SUBREG" &&
         R->getName() != "IMPLICIT_DEF" &&
         R->getName() != "SUBREG_TO_REG" &&
-        R->getName() != "COPY_TO_REGCLASS")
+        R->getName() != "COPY_TO_REGCLASS" &&
+        R->getName() != "DEBUG_VALUE")
       throw R->getName() + " doesn't have a field named '" + 
             Val->getValue() + "'!";
     return;