ARM Cost model: Use the size of vector registers and widest vectorizable instruction to determine the max vectorization factor.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172010 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 02af2d34c5..3ef74eb2d6 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::getRegisterBitWidth(bool Vector) const {
+  return PrevTTI->getRegisterBitWidth(Vector);
+}
+
 unsigned TargetTransformInfo::getMaximumUnrollFactor() const {
   return PrevTTI->getMaximumUnrollFactor();
 }
@@ -220,6 +224,10 @@ struct NoTTI : ImmutablePass, TargetTransformInfo {
     return 8;
   }
 
+  unsigned  getRegisterBitWidth(bool Vector) const {
+    return 32;
+  }
+
   unsigned getMaximumUnrollFactor() const {
     return 1;
   }