[Alignment] Move OffsetToAlignment to Alignment.h

Summary:
This is patch is part of a series to introduce an Alignment type.
See this thread for context: http://lists.llvm.org/pipermail/llvm-dev/2019-July/133851.html
See this patch for the introduction of the type: https://reviews.llvm.org/D64790

Reviewers: courbet, JDevlieghere, alexshap, rupprecht, jhenderson

Subscribers: sdardis, nemanjai, hiraditya, kbarton, jakehehrlich, jrtc27, MaskRay, atanasyan, jsji, seiya, cfe-commits, llvm-commits

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D67499

llvm-svn: 371742
diff --git a/llvm/tools/llvm-cov/TestingSupport.cpp b/llvm/tools/llvm-cov/TestingSupport.cpp
index 39bdade..39f809a 100644
--- a/llvm/tools/llvm-cov/TestingSupport.cpp
+++ b/llvm/tools/llvm-cov/TestingSupport.cpp
@@ -8,6 +8,7 @@
 
 #include "llvm/Object/ObjectFile.h"
 #include "llvm/ProfileData/InstrProf.h"
+#include "llvm/Support/Alignment.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/LEB128.h"
 #include "llvm/Support/raw_ostream.h"
@@ -99,7 +100,7 @@
   encodeULEB128(ProfileNamesAddress, OS);
   OS << ProfileNamesData;
   // Coverage mapping data is expected to have an alignment of 8.
-  for (unsigned Pad = OffsetToAlignment(OS.tell(), 8); Pad; --Pad)
+  for (unsigned Pad = offsetToAlignment(OS.tell(), llvm::Align(8)); Pad; --Pad)
     OS.write(uint8_t(0));
   OS << CoverageMappingData;