From 050e163ae8b4bb6eb252b59e2f8f36e68ae9239d Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Wed, 13 Jan 2016 19:58:01 +0000
Subject: Vendor import of llvm trunk r257626:
 https://llvm.org/svn/llvm-project/llvm/trunk@257626

---
 lib/ProfileData/CoverageMappingReader.cpp | 36 ++++++++++++-------------------
 1 file changed, 14 insertions(+), 22 deletions(-)

(limited to 'lib/ProfileData/CoverageMappingReader.cpp')

diff --git a/lib/ProfileData/CoverageMappingReader.cpp b/lib/ProfileData/CoverageMappingReader.cpp
index 32c692d8073a..89e1cf42c577 100644
--- a/lib/ProfileData/CoverageMappingReader.cpp
+++ b/lib/ProfileData/CoverageMappingReader.cpp
@@ -319,21 +319,14 @@ static std::error_code readCoverageMappingData(
     if (Buf + sizeof(CovMapHeader) > End)
       return coveragemap_error::malformed;
     auto CovHeader = reinterpret_cast<const coverage::CovMapHeader *>(Buf);
-    uint32_t NRecords =
-        endian::byte_swap<uint32_t, Endian>(CovHeader->NRecords);
-    uint32_t FilenamesSize =
-        endian::byte_swap<uint32_t, Endian>(CovHeader->FilenamesSize);
-    uint32_t CoverageSize =
-        endian::byte_swap<uint32_t, Endian>(CovHeader->CoverageSize);
-    uint32_t Version = endian::byte_swap<uint32_t, Endian>(CovHeader->Version);
+    uint32_t NRecords = CovHeader->getNRecords<Endian>();
+    uint32_t FilenamesSize = CovHeader->getFilenamesSize<Endian>();
+    uint32_t CoverageSize = CovHeader->getCoverageSize<Endian>();
+    uint32_t Version = CovHeader->getVersion<Endian>();
     Buf = reinterpret_cast<const char *>(++CovHeader);
 
-    switch (Version) {
-    case CoverageMappingVersion1:
-      break;
-    default:
+    if (Version > coverage::CoverageMappingCurrentVersion)
       return coveragemap_error::unsupported_version;
-    }
 
     // Skip past the function records, saving the start and end for later.
     const char *FunBuf = Buf;
@@ -364,11 +357,8 @@ static std::error_code readCoverageMappingData(
         reinterpret_cast<const coverage::CovMapFunctionRecord<T> *>(FunBuf);
     while ((const char *)CFR < FunEnd) {
       // Read the function information
-      T NamePtr = endian::byte_swap<T, Endian>(CFR->NamePtr);
-      uint32_t NameSize = endian::byte_swap<uint32_t, Endian>(CFR->NameSize);
-      uint32_t DataSize = endian::byte_swap<uint32_t, Endian>(CFR->DataSize);
-      uint64_t FuncHash = endian::byte_swap<uint64_t, Endian>(CFR->FuncHash);
-      CFR++;
+      uint32_t DataSize = CFR->template getDataSize<Endian>();
+      uint64_t FuncHash = CFR->template getFuncHash<Endian>();
 
       // Now use that to read the coverage data.
       if (CovBuf + DataSize > CovEnd)
@@ -379,16 +369,18 @@ static std::error_code readCoverageMappingData(
       // Ignore this record if we already have a record that points to the same
       // function name. This is useful to ignore the redundant records for the
       // functions with ODR linkage.
-      if (!UniqueFunctionMappingData.insert(NamePtr).second)
+      T NameRef = CFR->template getFuncNameRef<Endian>();
+      if (!UniqueFunctionMappingData.insert(NameRef).second)
         continue;
 
-      // Finally, grab the name and create a record.
-      StringRef FuncName = ProfileNames.getFuncName(NamePtr, NameSize);
-      if (NameSize && FuncName.empty())
-        return coveragemap_error::malformed;
+      StringRef FuncName;
+      if (std::error_code EC =
+              CFR->template getFuncName<Endian>(ProfileNames, FuncName))
+        return EC;
       Records.push_back(BinaryCoverageReader::ProfileMappingRecord(
           CoverageMappingVersion(Version), FuncName, FuncHash, Mapping,
           FilenamesBegin, Filenames.size() - FilenamesBegin));
+      CFR++;
     }
   }
 
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