Change allowsUnalignedMemoryAccesses to take type argument since some targets

support unaligned mem access only for certain types. (Should it be size
instead?)

ARM v7 supports unaligned access for i16 and i32, some v6 variants support it
as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79127 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 9 insertions, 4 deletions

diff --git a/lib/Target/X86/X86ISelLowering.h b/lib/Target/X86/X86ISelLowering.h
index 3ac6e51..f3f09f5 100644
--- a/lib/Target/X86/X86ISelLowering.h
+++ b/lib/Target/X86/X86ISelLowering.h
@@ -389,10 +389,15 @@ namespace llvm {
     /// and store operations as a result of memset, memcpy, and memmove
     /// lowering. It returns EVT::iAny if SelectionDAG should be responsible for
     /// determining it.
-    virtual
-    EVT getOptimalMemOpType(uint64_t Size, unsigned Align,
-                            bool isSrcConst, bool isSrcStr,
-                            SelectionDAG &DAG) const;
+    virtual EVT getOptimalMemOpType(uint64_t Size, unsigned Align,
+                                    bool isSrcConst, bool isSrcStr,
+                                    SelectionDAG &DAG) const;
+
+    /// allowsUnalignedMemoryAccesses - Returns true if the target allows
+    /// unaligned memory accesses. of the specified type.
+    virtual bool allowsUnalignedMemoryAccesses(EVT VT) const {
+      return true;
+    }
 
     /// LowerOperation - Provide custom lowering hooks for some operations.
     ///