[lld] r234927 - [ELF] Write whole std::vector using a single `memcpy` call

[Simon Atanasyan]

Author: atanasyan
Date: Tue Apr 14 13:53:14 2015
New Revision: 234927

URL: http://llvm.org/viewvc/llvm-project?rev=234927&view=rev
Log:
[ELF] Write whole std::vector using a single `memcpy` call

We do not need to iterate over `_buckets` and `_chains` vectors and
write all elements one by one.

No functional changes.

Modified:
    lld/trunk/lib/ReaderWriter/ELF/SectionChunks.h

Modified: lld/trunk/lib/ReaderWriter/ELF/SectionChunks.h
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/lib/ReaderWriter/ELF/SectionChunks.h?rev=234927&r1=234926&r2=234927&view=diff
==============================================================================
--- lld/trunk/lib/ReaderWriter/ELF/SectionChunks.h (original)
+++ lld/trunk/lib/ReaderWriter/ELF/SectionChunks.h Tue Apr 14 13:53:14 2015
@@ -1414,17 +1414,10 @@ public:
     std::memcpy(dest, bucketChainCounts, sizeof(bucketChainCounts));
     dest += sizeof(bucketChainCounts);
     // write bucket values
-    for (auto bi : _buckets) {
-      uint32_t val = (bi);
-      std::memcpy(dest, &val, sizeof(uint32_t));
-      dest += sizeof(uint32_t);
-    }
+    std::memcpy(dest, _buckets.data(), _buckets.size() * sizeof(uint32_t));
+    dest += _buckets.size() * sizeof(uint32_t);
     // write chain values
-    for (auto ci : _chains) {
-      uint32_t val = (ci);
-      std::memcpy(dest, &val, sizeof(uint32_t));
-      dest += sizeof(uint32_t);
-    }
+    std::memcpy(dest, _chains.data(), _chains.size() * sizeof(uint32_t));
   }
 
 private: