Nehalem unaligned memory access is fast.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100089 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/Target/X86/X86Subtarget.h b/lib/Target/X86/X86Subtarget.h
index 56220db3b2..bf30154625 100644
--- a/lib/Target/X86/X86Subtarget.h
+++ b/lib/Target/X86/X86Subtarget.h
@@ -78,6 +78,9 @@ protected:
   /// IsBTMemSlow - True if BT (bit test) of memory instructions are slow.
   bool IsBTMemSlow;
 
+  /// IsUAMemFast - True if unaligned memory access is fast.
+  bool IsUAMemFast;
+
   /// HasVectorUAMem - True if SIMD operations can have unaligned memory
   ///                  operands. This may require setting a feature bit in the
   ///                  processor.
@@ -148,6 +151,7 @@ public:
   bool hasFMA3() const { return HasFMA3; }
   bool hasFMA4() const { return HasFMA4; }
   bool isBTMemSlow() const { return IsBTMemSlow; }
+  bool isUnalignedMemAccessFast() const { return IsUAMemFast; }
   bool hasVectorUAMem() const { return HasVectorUAMem; }
 
   bool isTargetDarwin() const { return TargetType == isDarwin; }