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, 8 insertions, 0 deletions

diff --git a/lib/Analysis/TargetTransformInfo.cpp b/lib/Analysis/TargetTransformInfo.cpp
index 63f495a430..02af2d34c5 100644
--- a/lib/Analysis/TargetTransformInfo.cpp
+++ b/lib/Analysis/TargetTransformInfo.cpp
@@ -92,6 +92,10 @@ unsigned TargetTransformInfo::getNumberOfRegisters(bool Vector) const {
   return PrevTTI->getNumberOfRegisters(Vector);
 }
 
+unsigned TargetTransformInfo::getMaximumUnrollFactor() const {
+  return PrevTTI->getMaximumUnrollFactor();
+}
+
 unsigned TargetTransformInfo::getArithmeticInstrCost(unsigned Opcode,
                                                      Type *Ty) const {
   return PrevTTI->getArithmeticInstrCost(Opcode, Ty);
@@ -216,6 +220,10 @@ struct NoTTI : ImmutablePass, TargetTransformInfo {
     return 8;
   }
 
+  unsigned getMaximumUnrollFactor() const {
+    return 1;
+  }
+
   unsigned getArithmeticInstrCost(unsigned Opcode, Type *Ty) const {
     return 1;
   }