From: Nate Begeman <natebegeman@mac.com>
Date: Mon, 16 Jan 2006 07:59:13 +0000 (+0000)
Subject: Expand case for 64b Legalize, even though no one should end up using this
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=c02d98e335703d8aa51b42d9b22a1fa2ac5d6c33;p=oota-llvm.git

Expand case for 64b Legalize, even though no one should end up using this
(itanium supports bswap natively, alpha should custom lower it using the
VAX floating point swapload, ha ha).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25356 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 5716a78d217..fcc3a95b741 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -2179,12 +2179,12 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
     Tmp2 = LegalizeOp(Node->getOperand(1));   // RHS
     switch (TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0))) {
     case TargetLowering::Custom: {
-      Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1, Tmp2);
+      Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1,Tmp2);
       SDOperand Tmp = TLI.LowerOperation(Result, DAG);
       if (Tmp.Val) {
-	Tmp = LegalizeOp(Tmp);  // Relegalize input.
-	AddLegalizedOperand(Op, Tmp);
-	return Tmp;
+        Tmp = LegalizeOp(Tmp);  // Relegalize input.
+        AddLegalizedOperand(Op, Tmp);
+        return Tmp;
       } //else it was considered legal and we fall through
     }
     case TargetLowering::Legal:
@@ -2276,6 +2276,45 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
           Tmp2 = DAG.getNode(ISD::OR, VT, Tmp2, Tmp1);
           Result = DAG.getNode(ISD::OR, VT, Tmp4, Tmp2);
           break;
+        case MVT::i64: {
+          SDOperand Tmp5, Tmp6, Tmp7, Tmp8;
+          Tmp8 = DAG.getNode(ISD::SHL, VT, Tmp1,
+                             DAG.getConstant(56, TLI.getShiftAmountTy()));
+          Tmp7 = DAG.getNode(ISD::SHL, VT, Tmp1,
+                             DAG.getConstant(40, TLI.getShiftAmountTy()));
+          Tmp6 = DAG.getNode(ISD::SHL, VT, Tmp1,
+                             DAG.getConstant(24, TLI.getShiftAmountTy()));
+          Tmp5 = DAG.getNode(ISD::SHL, VT, Tmp1,
+                             DAG.getConstant(8, TLI.getShiftAmountTy()));
+          Tmp4 = DAG.getNode(ISD::SRL, VT, Tmp1,
+                             DAG.getConstant(8, TLI.getShiftAmountTy()));
+          Tmp3 = DAG.getNode(ISD::SRL, VT, Tmp1,
+                             DAG.getConstant(24, TLI.getShiftAmountTy()));
+          Tmp2 = DAG.getNode(ISD::SRL, VT, Tmp1,
+                             DAG.getConstant(40, TLI.getShiftAmountTy()));
+          Tmp1 = DAG.getNode(ISD::SRL, VT, Tmp1,
+                             DAG.getConstant(56, TLI.getShiftAmountTy()));
+          Tmp7 = DAG.getNode(ISD::AND, VT, Tmp7, 
+                             DAG.getConstant(0x00FF000000000000ULL, VT));
+          Tmp6 = DAG.getNode(ISD::AND, VT, Tmp7, 
+                             DAG.getConstant(0x0000FF0000000000ULL, VT));
+          Tmp5 = DAG.getNode(ISD::AND, VT, Tmp7, 
+                             DAG.getConstant(0x000000FF00000000ULL, VT));
+          Tmp4 = DAG.getNode(ISD::AND, VT, Tmp7, 
+                             DAG.getConstant(0x00000000FF000000ULL, VT));
+          Tmp3 = DAG.getNode(ISD::AND, VT, Tmp7, 
+                             DAG.getConstant(0x0000000000FF0000ULL, VT));
+          Tmp2 = DAG.getNode(ISD::AND, VT, Tmp7, 
+                             DAG.getConstant(0x000000000000FF00ULL, VT));
+          Tmp8 = DAG.getNode(ISD::OR, VT, Tmp8, Tmp7);
+          Tmp6 = DAG.getNode(ISD::OR, VT, Tmp6, Tmp5);
+          Tmp4 = DAG.getNode(ISD::OR, VT, Tmp4, Tmp3);
+          Tmp2 = DAG.getNode(ISD::OR, VT, Tmp2, Tmp1);
+          Tmp8 = DAG.getNode(ISD::OR, VT, Tmp8, Tmp6);
+          Tmp4 = DAG.getNode(ISD::OR, VT, Tmp4, Tmp2);
+          Result = DAG.getNode(ISD::OR, VT, Tmp8, Tmp4);
+          break;
+        }
         }
         break;
       }