Cost Model: Move the 'max unroll factor' variable to the TTI and add initial Cost Model support on ARM.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171928 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 0 deletions

diff --git a/lib/CodeGen/BasicTargetTransformInfo.cpp b/lib/CodeGen/BasicTargetTransformInfo.cpp
index c27e081a5e..2f3ac9a901 100644
--- a/lib/CodeGen/BasicTargetTransformInfo.cpp
+++ b/lib/CodeGen/BasicTargetTransformInfo.cpp
@@ -83,6 +83,7 @@ public:
   /// @{
 
   virtual unsigned getNumberOfRegisters(bool Vector) const;
+  virtual unsigned getMaximumUnrollFactor() const;
   virtual unsigned getArithmeticInstrCost(unsigned Opcode, Type *Ty) const;
   virtual unsigned getShuffleCost(ShuffleKind Kind, Type *Tp,
                                   int Index, Type *SubTp) const;
@@ -182,6 +183,10 @@ unsigned BasicTTI::getNumberOfRegisters(bool Vector) const {
   return 1;
 }
 
+unsigned BasicTTI::getMaximumUnrollFactor() const {
+  return 1;
+}
+
 unsigned BasicTTI::getArithmeticInstrCost(unsigned Opcode, Type *Ty) const {
   // Check if any of the operands are vector operands.
   int ISD = TLI->InstructionOpcodeToISD(Opcode);