getFunctionAlignment should return log2 alignment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83242 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index a656ef9..4fa24f3 100644
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -542,7 +542,7 @@
 
 /// getFunctionAlignment - Return the Log2 alignment of this function.
 unsigned ARMTargetLowering::getFunctionAlignment(const Function *F) const {
-  return getTargetMachine().getSubtarget<ARMSubtarget>().isThumb() ? 1 : 2;
+  return getTargetMachine().getSubtarget<ARMSubtarget>().isThumb() ? 0 : 1;
 }
 
 //===----------------------------------------------------------------------===//