[PowerPC] Support the (old) cntlz instruction alias

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

diff --git a/lib/Target/X86/X86ISelLowering.h b/lib/Target/X86/X86ISelLowering.h
index 7c6ffa2afa2248fa7f3cd3f8ff35e1e6064ca4fa..eb904f31788cd391a28946a5b479ce2cc59bac02 100644 (file)
--- a/lib/Target/X86/X86ISelLowering.h
+++ b/lib/Target/X86/X86ISelLowering.h
@@ -158,6 +158,10 @@ namespace llvm {
       /// vector to a GPR.
       MMX_MOVD2W,
 
+      /// MMX_MOVW2D - Copies a GPR into the low 32-bit word of a MMX vector
+      /// and zero out the high word.
+      MMX_MOVW2D,
+
       /// PEXTRB - Extract an 8-bit value from a vector and zero extend it to
       /// i32, corresponds to X86::PEXTRB.
       PEXTRB,
@@ -378,6 +382,17 @@ namespace llvm {
       FNMSUB,
       FMADDSUB,
       FMSUBADD,
+      // FMA with rounding mode
+      FMADD_RND,
+      FNMADD_RND,
+      FMSUB_RND,
+      FNMSUB_RND,
+      FMADDSUB_RND,
+      FMSUBADD_RND,     
+
+      // Compress and expand
+      COMPRESS,
+      EXPAND,
 
       // Save xmm argument registers to the stack, according to %al. An operator
       // is needed so that this can be expanded with control flow.
@@ -543,7 +558,8 @@ namespace llvm {
   //  X86 Implementation of the TargetLowering interface
   class X86TargetLowering final : public TargetLowering {
   public:
-    explicit X86TargetLowering(const X86TargetMachine &TM);
+    explicit X86TargetLowering(const X86TargetMachine &TM,
+                               const X86Subtarget &STI);
 
     unsigned getJumpTableEncoding() const override;
 
@@ -629,6 +645,10 @@ namespace llvm {
     /// This method returns the name of a target specific DAG node.
     const char *getTargetNodeName(unsigned Opcode) const override;
 
+    bool isCheapToSpeculateCttz() const override;
+
+    bool isCheapToSpeculateCtlz() const override;
+
     /// Return the value type to use for ISD::SETCC.
     EVT getSetCCResultType(LLVMContext &Context, EVT VT) const override;
 
@@ -724,6 +744,10 @@ namespace llvm {
     bool isZExtFree(EVT VT1, EVT VT2) const override;
     bool isZExtFree(SDValue Val, EVT VT2) const override;
 
+    /// Return true if folding a vector load into ExtVal (a sign, zero, or any
+    /// extend node) is profitable.
+    bool isVectorLoadExtDesirable(SDValue) const override;
+
     /// Return true if an FMA operation is faster than a pair of fmul and fadd
     /// instructions. fmuladd intrinsics will be expanded to FMAs when this
     /// method returns true, otherwise fmuladd is expanded to fmul + fadd.
@@ -762,9 +786,10 @@ namespace llvm {
       return !X86ScalarSSEf64 || VT == MVT::f80;
     }
 
-    const X86Subtarget* getSubtarget() const {
-      return Subtarget;
-    }
+    /// Return true if we believe it is correct and profitable to reduce the
+    /// load node to a smaller type.
+    bool shouldReduceLoadWidth(SDNode *Load, ISD::LoadExtType ExtTy,
+                               EVT NewVT) const override;
 
     /// Return true if the specified scalar FP type is computed in an SSE
     /// register, not on the X87 floating point stack.
@@ -787,6 +812,10 @@ namespace llvm {
     bool shouldConvertConstantLoadToIntImm(const APInt &Imm,
                                            Type *Ty) const override;
 
+    /// Return true if EXTRACT_SUBVECTOR is cheap for this result type
+    /// with this index.
+    bool isExtractSubvectorCheap(EVT ResVT, unsigned Index) const override;
+
     /// Intel processors have a unified instruction and data cache
     const char * getClearCacheBuiltinName() const override {
       return nullptr; // nothing to do, move along.
@@ -810,9 +839,6 @@ namespace llvm {
 
     bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override;
 
-    /// \brief Reset the operation actions based on target options.
-    void resetOperationActions() override;
-
     bool useLoadStackGuardNode() const override;
     /// \brief Customize the preferred legalization strategy for certain types.
     LegalizeTypeAction getPreferredVectorAction(EVT VT) const override;
@@ -827,10 +853,6 @@ namespace llvm {
     const X86Subtarget *Subtarget;
     const DataLayout *TD;
 
-    /// Used to store the TargetOptions so that we don't waste time resetting
-    /// the operation actions unless we have to.
-    TargetOptions TO;
-
     /// Select between SSE or x87 floating point ops.
     /// When SSE is available, use it for f32 operations.
     /// When SSE2 is available, use it for f64 operations.