Change instruction description to split OperandList into OutOperandList and

InOperandList. This gives one piece of important information: # of results
produced by an instruction.
An example of the change:
def ADD32rr  : I<0x01, MRMDestReg, (ops GR32:$dst, GR32:$src1, GR32:$src2),
                 "add{l} {$src2, $dst|$dst, $src2}",
                 [(set GR32:$dst, (add GR32:$src1, GR32:$src2))]>;
=>
def ADD32rr  : I<0x01, MRMDestReg, (outs GR32:$dst), (ins GR32:$src1, GR32:$src2),
                 "add{l} {$src2, $dst|$dst, $src2}",
                 [(set GR32:$dst, (add GR32:$src1, GR32:$src2))]>;

llvm-svn: 40033

4 files changed, 35 insertions, 4 deletions

diff --git a/llvm/utils/TableGen/CodeGenInstruction.h b/llvm/utils/TableGen/CodeGenInstruction.h
index 3f59c23a878..99da8d6e49a 100644
--- a/llvm/utils/TableGen/CodeGenInstruction.h
+++ b/llvm/utils/TableGen/CodeGenInstruction.h
@@ -76,6 +76,10 @@ namespace llvm {
           MINumOperands(MINO), MIOperandInfo(MIOI) {}
     };
 
+    /// NumDefs - Number of def operands declared.
+    ///
+    unsigned NumDefs;
+
     /// OperandList - The list of declared operands, along with their declared
     /// type (which is a record).
     std::vector<OperandInfo> OperandList;
diff --git a/llvm/utils/TableGen/CodeGenTarget.cpp b/llvm/utils/TableGen/CodeGenTarget.cpp
index 2aabe51c51c..268711da53b 100644
--- a/llvm/utils/TableGen/CodeGenTarget.cpp
+++ b/llvm/utils/TableGen/CodeGenTarget.cpp
@@ -376,13 +376,25 @@ CodeGenInstruction::CodeGenInstruction(Record *R, const std::string &AsmStr)
   
   DagInit *DI;
   try {
-    DI = R->getValueAsDag("OperandList");
+    DI = R->getValueAsDag("OutOperandList");
   } catch (...) {
     // Error getting operand list, just ignore it (sparcv9).
     AsmString.clear();
     OperandList.clear();
     return;
   }
+  NumDefs = DI->getNumArgs();
+
+  DagInit *IDI;
+  try {
+    IDI = R->getValueAsDag("InOperandList");
+  } catch (...) {
+    // Error getting operand list, just ignore it (sparcv9).
+    AsmString.clear();
+    OperandList.clear();
+    return;
+  }
+  DI = (DagInit*)(new BinOpInit(BinOpInit::CONCAT, DI, IDI))->Fold();
 
   unsigned MIOperandNo = 0;
   std::set<std::string> OperandNames;
diff --git a/llvm/utils/TableGen/DAGISelEmitter.cpp b/llvm/utils/TableGen/DAGISelEmitter.cpp
index fcad3185870..e8049d6baf5 100644
--- a/llvm/utils/TableGen/DAGISelEmitter.cpp
+++ b/llvm/utils/TableGen/DAGISelEmitter.cpp
@@ -1171,7 +1171,12 @@ void DAGISelEmitter::ParsePatternFragments(std::ostream &OS) {
     // Parse the operands list.
     DagInit *OpsList = Fragments[i]->getValueAsDag("Operands");
     DefInit *OpsOp = dynamic_cast<DefInit*>(OpsList->getOperator());
-    if (!OpsOp || OpsOp->getDef()->getName() != "ops")
+    // Special cases: ops == outs == ins. Different names are used to
+    // improve readibility.
+    if (!OpsOp ||
+        (OpsOp->getDef()->getName() != "ops" &&
+         OpsOp->getDef()->getName() != "outs" &&
+         OpsOp->getDef()->getName() != "ins"))
       P->error("Operands list should start with '(ops ... '!");
     
     // Copy over the arguments.       
diff --git a/llvm/utils/TableGen/Record.cpp b/llvm/utils/TableGen/Record.cpp
index e81a361eaeb..75583bb1d17 100644
--- a/llvm/utils/TableGen/Record.cpp
+++ b/llvm/utils/TableGen/Record.cpp
@@ -396,8 +396,18 @@ Init *BinOpInit::Fold() {
     if (LHSs && RHSs) {
       DefInit *LOp = dynamic_cast<DefInit*>(LHSs->getOperator());
       DefInit *ROp = dynamic_cast<DefInit*>(RHSs->getOperator());
-      if (LOp->getDef() != ROp->getDef())
-        throw "Concated Dag operators do not match!";
+      if (LOp->getDef() != ROp->getDef()) {
+        bool LIsOps =
+          LOp->getDef()->getName() == "outs" ||
+          LOp->getDef()->getName() != "ins" ||
+          LOp->getDef()->getName() != "defs";
+        bool RIsOps =
+          ROp->getDef()->getName() == "outs" ||
+          ROp->getDef()->getName() != "ins" ||
+          ROp->getDef()->getName() != "defs";
+        if (!LIsOps || !RIsOps)
+          throw "Concated Dag operators do not match!";
+      }
       std::vector<Init*> Args;
       std::vector<std::string> ArgNames;
       for (unsigned i = 0, e = LHSs->getNumArgs(); i != e; ++i) {