Rename DEBUG macro to LLVM_DEBUG.
    
The DEBUG() macro is very generic so it might clash with other projects.
The renaming was done as follows:
- git grep -l 'DEBUG' | xargs sed -i 's/\bDEBUG\s\?(/LLVM_DEBUG(/g'
- git diff -U0 master | ../clang/tools/clang-format/clang-format-diff.py -i -p1 -style LLVM
- Manual change to APInt
- Manually chage DOCS as regex doesn't match it.

In the transition period the DEBUG() macro is still present and aliased
to the LLVM_DEBUG() one.

Differential Revision: https://reviews.llvm.org/D43624

llvm-svn: 332240
diff --git a/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp b/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
index 098272d..7eb4c1c 100644
--- a/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
+++ b/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
@@ -728,14 +728,14 @@
   };
 
   int StridedLoads = countStridedLoads(L, SE);
-  DEBUG(dbgs() << "falkor-hwpf: detected " << StridedLoads
-               << " strided loads\n");
+  LLVM_DEBUG(dbgs() << "falkor-hwpf: detected " << StridedLoads
+                    << " strided loads\n");
   // Pick the largest power of 2 unroll count that won't result in too many
   // strided loads.
   if (StridedLoads) {
     UP.MaxCount = 1 << Log2_32(MaxStridedLoads / StridedLoads);
-    DEBUG(dbgs() << "falkor-hwpf: setting unroll MaxCount to " << UP.MaxCount
-                 << '\n');
+    LLVM_DEBUG(dbgs() << "falkor-hwpf: setting unroll MaxCount to "
+                      << UP.MaxCount << '\n');
   }
 }