commit dbb121b1f19bf77e0bef8725d5ee42c1b8761caf
author Dan Gohman <gohman@apple.com> Sat Apr 17 15:26:15 2010 +0000
committer Dan Gohman <gohman@apple.com> Sat Apr 17 15:26:15 2010 +0000
tree 36440ef2be51930ff4234131a14b365f5a0453ca
parent d80404c4e94e4252c0cb306b3e3fd7ba4dc2535d

Use const qualifiers with TargetLowering. This eliminates several
const_casts, and it reinforces the design of the Target classes being
immutable.

SelectionDAGISel::IsLegalToFold is now a static member function, because
PIC16 uses it in an unconventional way. There is more room for API
cleanup here.

And PIC16's AsmPrinter no longer uses TargetLowering.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101635 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/Mips/MipsISelLowering.h

diff --git a/lib/Target/Mips/MipsISelLowering.h b/lib/Target/Mips/MipsISelLowering.h
index 0c5421f..43af325 100644
--- a/lib/Target/Mips/MipsISelLowering.h
+++ b/lib/Target/Mips/MipsISelLowering.h
@@ -72,7 +72,7 @@
     explicit MipsTargetLowering(MipsTargetMachine &TM);
 
     /// LowerOperation - Provide custom lowering hooks for some operations.
-    virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG);
+    virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const;
 
     /// getTargetNodeName - This method returns the name of a target specific 
     //  DAG node.
@@ -93,27 +93,27 @@
                             CallingConv::ID CallConv, bool isVarArg,
                             const SmallVectorImpl<ISD::InputArg> &Ins,
                             DebugLoc dl, SelectionDAG &DAG,
-                            SmallVectorImpl<SDValue> &InVals);
+                            SmallVectorImpl<SDValue> &InVals) const;
 
     // Lower Operand specifics
-    SDValue LowerANDOR(SDValue Op, SelectionDAG &DAG);
-    SDValue LowerBRCOND(SDValue Op, SelectionDAG &DAG);
-    SDValue LowerConstantPool(SDValue Op, SelectionDAG &DAG);
-    SDValue LowerDYNAMIC_STACKALLOC(SDValue Op, SelectionDAG &DAG);
-    SDValue LowerFP_TO_SINT(SDValue Op, SelectionDAG &DAG);
-    SDValue LowerGlobalAddress(SDValue Op, SelectionDAG &DAG);
-    SDValue LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG);
-    SDValue LowerJumpTable(SDValue Op, SelectionDAG &DAG);
-    SDValue LowerSELECT(SDValue Op, SelectionDAG &DAG);
-    SDValue LowerSETCC(SDValue Op, SelectionDAG &DAG);
-    SDValue LowerVASTART(SDValue Op, SelectionDAG &DAG);
+    SDValue LowerANDOR(SDValue Op, SelectionDAG &DAG) const;
+    SDValue LowerBRCOND(SDValue Op, SelectionDAG &DAG) const;
+    SDValue LowerConstantPool(SDValue Op, SelectionDAG &DAG) const;
+    SDValue LowerDYNAMIC_STACKALLOC(SDValue Op, SelectionDAG &DAG) const;
+    SDValue LowerFP_TO_SINT(SDValue Op, SelectionDAG &DAG) const;
+    SDValue LowerGlobalAddress(SDValue Op, SelectionDAG &DAG) const;
+    SDValue LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const;
+    SDValue LowerJumpTable(SDValue Op, SelectionDAG &DAG) const;
+    SDValue LowerSELECT(SDValue Op, SelectionDAG &DAG) const;
+    SDValue LowerSETCC(SDValue Op, SelectionDAG &DAG) const;
+    SDValue LowerVASTART(SDValue Op, SelectionDAG &DAG) const;
 
     virtual SDValue
       LowerFormalArguments(SDValue Chain,
                            CallingConv::ID CallConv, bool isVarArg,
                            const SmallVectorImpl<ISD::InputArg> &Ins,
                            DebugLoc dl, SelectionDAG &DAG,
-                           SmallVectorImpl<SDValue> &InVals);
+                           SmallVectorImpl<SDValue> &InVals) const;
 
     virtual SDValue
       LowerCall(SDValue Chain, SDValue Callee,
@@ -122,13 +122,13 @@
                 const SmallVectorImpl<ISD::OutputArg> &Outs,
                 const SmallVectorImpl<ISD::InputArg> &Ins,
                 DebugLoc dl, SelectionDAG &DAG,
-                SmallVectorImpl<SDValue> &InVals);
+                SmallVectorImpl<SDValue> &InVals) const;
 
     virtual SDValue
       LowerReturn(SDValue Chain,
                   CallingConv::ID CallConv, bool isVarArg,
                   const SmallVectorImpl<ISD::OutputArg> &Outs,
-                  DebugLoc dl, SelectionDAG &DAG);
+                  DebugLoc dl, SelectionDAG &DAG) const;
 
     virtual MachineBasicBlock *EmitInstrWithCustomInserter(MachineInstr *MI,
                                                          MachineBasicBlock *MBB,