X86 PIC JIT support fixes: encoding bugs, add lazy pointer stubs support.

[oota-llvm.git] / lib / Target / X86 / X86ISelLowering.h

diff --git a/lib/Target/X86/X86ISelLowering.h b/lib/Target/X86/X86ISelLowering.h
index b68de5a675394dab578f17b9522ddbf19f890d8a..bcfab641fd08cb45ada17b196ce3899a3dcb52ea 100644 (file)
--- a/lib/Target/X86/X86ISelLowering.h
+++ b/lib/Target/X86/X86ISelLowering.h
@@ -2,8 +2,8 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by Chris Lattner and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -28,6 +28,11 @@ namespace llvm {
       // Start the numbering where the builtin ops leave off.
       FIRST_NUMBER = ISD::BUILTIN_OP_END+X86::INSTRUCTION_LIST_END,
 
+      /// BSF - Bit scan forward.
+      /// BSR - Bit scan reverse.
+      BSF,
+      BSR,
+
       /// SHLD, SHRD - Double shift instructions. These correspond to
       /// X86::SHLDxx and X86::SHRDxx instructions.
       SHLD,
@@ -188,7 +193,10 @@ namespace llvm {
       //   operand #1 callee (register or absolute)
       //   operand #2 stack adjustment
       //   operand #3 optional in flag
-      TC_RETURN
+      TC_RETURN,
+
+      // Store FP control world into i16 memory
+      FNSTCW16m
     };
   }
 
@@ -296,6 +304,11 @@ namespace llvm {
   public:
     explicit X86TargetLowering(TargetMachine &TM);
 
+    /// getPICJumpTableRelocaBase - Returns relocation base for the given PIC
+    /// jumptable.
+    SDOperand getPICJumpTableRelocBase(SDOperand Table,
+                                       SelectionDAG &DAG) const;
+
     // Return the number of bytes that a function should pop when it returns (in
     // addition to the space used by the return address).
     //
@@ -313,6 +326,12 @@ namespace llvm {
     ///
     virtual SDOperand LowerOperation(SDOperand Op, SelectionDAG &DAG);
 
+    /// ExpandOperation - Custom lower the specified operation, splitting the
+    /// value into two pieces.
+    ///
+    virtual SDNode *ExpandOperationResult(SDNode *N, SelectionDAG &DAG);
+
+    
     virtual SDOperand PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const;
 
     virtual MachineBasicBlock *InsertAtEndOfBasicBlock(MachineInstr *MI,
@@ -363,6 +382,7 @@ namespace llvm {
     /// type Ty1 to type Ty2. e.g. On x86 it's free to truncate a i32 value in
     /// register EAX to i16 by referencing its sub-register AX.
     virtual bool isTruncateFree(const Type *Ty1, const Type *Ty2) const;
+    virtual bool isTruncateFree(MVT::ValueType VT1, MVT::ValueType VT2) const;
   
     /// isShuffleMaskLegal - Targets can use this to indicate that they only
     /// support *some* VECTOR_SHUFFLE operations, those with specific masks.
@@ -385,6 +405,10 @@ namespace llvm {
                                                    SDOperand Ret, 
                                                    SelectionDAG &DAG) const;
 
+    virtual const TargetSubtarget* getSubtarget() {
+      return static_cast<const TargetSubtarget*>(Subtarget);
+    }
+
   private:
     /// Subtarget - Keep a pointer to the X86Subtarget around so that we can
     /// make the right decision when generating code for different targets.
@@ -431,6 +455,9 @@ namespace llvm {
     SDOperand LowerFastCCArguments(SDOperand Op, SelectionDAG &DAG);
     SDOperand LowerFastCCCallTo(SDOperand Op, SelectionDAG &DAG, unsigned CC);
 
+    std::pair<SDOperand,SDOperand> FP_TO_SINTHelper(SDOperand Op, 
+                                                    SelectionDAG &DAG);
+    
     SDOperand LowerBUILD_VECTOR(SDOperand Op, SelectionDAG &DAG);
     SDOperand LowerVECTOR_SHUFFLE(SDOperand Op, SelectionDAG &DAG);
     SDOperand LowerEXTRACT_VECTOR_ELT(SDOperand Op, SelectionDAG &DAG);
@@ -453,16 +480,11 @@ namespace llvm {
     SDOperand LowerMEMCPYInline(SDOperand Dest, SDOperand Source,
                                 SDOperand Chain, unsigned Size, unsigned Align,
                                 SelectionDAG &DAG);
-    SDOperand LowerMEMCPYCall(SDOperand ChainOp, SDOperand DestOp,
-                              SDOperand SourceOp, SDOperand CountOp,
-                              SelectionDAG &DAG);
-    SDOperand LowerMEMCPY(SDOperand Op, SelectionDAG &DAG);
     SDOperand LowerJumpTable(SDOperand Op, SelectionDAG &DAG);
     SDOperand LowerCALL(SDOperand Op, SelectionDAG &DAG);
     SDOperand LowerRET(SDOperand Op, SelectionDAG &DAG);
     SDOperand LowerDYNAMIC_STACKALLOC(SDOperand Op, SelectionDAG &DAG);
     SDOperand LowerFORMAL_ARGUMENTS(SDOperand Op, SelectionDAG &DAG);
-    SDOperand LowerREADCYCLCECOUNTER(SDOperand Op, SelectionDAG &DAG);
     SDOperand LowerVASTART(SDOperand Op, SelectionDAG &DAG);
     SDOperand LowerVACOPY(SDOperand Op, SelectionDAG &DAG);
     SDOperand LowerINTRINSIC_WO_CHAIN(SDOperand Op, SelectionDAG &DAG);
@@ -471,6 +493,11 @@ namespace llvm {
     SDOperand LowerFRAME_TO_ARGS_OFFSET(SDOperand Op, SelectionDAG &DAG);
     SDOperand LowerEH_RETURN(SDOperand Op, SelectionDAG &DAG);
     SDOperand LowerTRAMPOLINE(SDOperand Op, SelectionDAG &DAG);
+    SDOperand LowerFLT_ROUNDS(SDOperand Op, SelectionDAG &DAG);
+    SDOperand LowerCTLZ(SDOperand Op, SelectionDAG &DAG);
+    SDOperand LowerCTTZ(SDOperand Op, SelectionDAG &DAG);
+    SDNode *ExpandFP_TO_SINT(SDNode *N, SelectionDAG &DAG);
+    SDNode *ExpandREADCYCLECOUNTER(SDNode *N, SelectionDAG &DAG);
   };
 }