From 39678d836c2e2ae4ff8bb8a33dcee9601929d7fb Mon Sep 17 00:00:00 2001
From: "Michael J. Spencer" <bigcheesegs@gmail.com>
Date: Sun, 3 Feb 2013 10:48:31 +0000
Subject: [Support] Add LLVM_IS_UNALIGNED_ACCESS_FAST.

llvm-svn: 174271
---
 llvm/lib/Object/ELFObjectFile.cpp | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

(limited to 'llvm/lib/Object/ELFObjectFile.cpp')

diff --git a/llvm/lib/Object/ELFObjectFile.cpp b/llvm/lib/Object/ELFObjectFile.cpp
index 160053dabd8..cfe0eb467e5 100644
--- a/llvm/lib/Object/ELFObjectFile.cpp
+++ b/llvm/lib/Object/ELFObjectFile.cpp
@@ -27,30 +27,42 @@ ObjectFile *ObjectFile::createELFObjectFile(MemoryBuffer *Object) {
     1ULL << CountTrailingZeros_64(uintptr_t(Object->getBufferStart()));
 
   if (Ident.first == ELF::ELFCLASS32 && Ident.second == ELF::ELFDATA2LSB)
+#if !LLVM_IS_UNALIGNED_ACCESS_FAST
     if (MaxAlignment >= 4)
       return new ELFObjectFile<ELFType<support::little, 4, false> >(Object, ec);
-    else if (MaxAlignment >= 2)
+    else
+#endif
+    if (MaxAlignment >= 2)
       return new ELFObjectFile<ELFType<support::little, 2, false> >(Object, ec);
     else
       llvm_unreachable("Invalid alignment for ELF file!");
   else if (Ident.first == ELF::ELFCLASS32 && Ident.second == ELF::ELFDATA2MSB)
+#if !LLVM_IS_UNALIGNED_ACCESS_FAST
     if (MaxAlignment >= 4)
       return new ELFObjectFile<ELFType<support::big, 4, false> >(Object, ec);
-    else if (MaxAlignment >= 2)
+    else
+#endif
+    if (MaxAlignment >= 2)
       return new ELFObjectFile<ELFType<support::big, 2, false> >(Object, ec);
     else
       llvm_unreachable("Invalid alignment for ELF file!");
   else if (Ident.first == ELF::ELFCLASS64 && Ident.second == ELF::ELFDATA2MSB)
+#if !LLVM_IS_UNALIGNED_ACCESS_FAST
     if (MaxAlignment >= 8)
       return new ELFObjectFile<ELFType<support::big, 8, true> >(Object, ec);
-    else if (MaxAlignment >= 2)
+    else
+#endif
+    if (MaxAlignment >= 2)
       return new ELFObjectFile<ELFType<support::big, 2, true> >(Object, ec);
     else
       llvm_unreachable("Invalid alignment for ELF file!");
   else if (Ident.first == ELF::ELFCLASS64 && Ident.second == ELF::ELFDATA2LSB) {
+#if !LLVM_IS_UNALIGNED_ACCESS_FAST
     if (MaxAlignment >= 8)
       return new ELFObjectFile<ELFType<support::little, 8, true> >(Object, ec);
-    else if (MaxAlignment >= 2)
+    else
+#endif
+    if (MaxAlignment >= 2)
       return new ELFObjectFile<ELFType<support::little, 2, true> >(Object, ec);
     else
       llvm_unreachable("Invalid alignment for ELF file!");
-- 
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