CodeGen: Rename DEBUG_TYPE to match passnames

Rename the DEBUG_TYPE to match the names of corresponding passes where
it makes sense. Also establish the pattern of simply referencing
DEBUG_TYPE instead of repeating the passname where possible.

llvm-svn: 303921
diff --git a/llvm/lib/CodeGen/ScalarizeMaskedMemIntrin.cpp b/llvm/lib/CodeGen/ScalarizeMaskedMemIntrin.cpp
index dab5b91..07b43a8 100644
--- a/llvm/lib/CodeGen/ScalarizeMaskedMemIntrin.cpp
+++ b/llvm/lib/CodeGen/ScalarizeMaskedMemIntrin.cpp
@@ -49,12 +49,8 @@
 } // namespace
 
 char ScalarizeMaskedMemIntrin::ID = 0;
-INITIALIZE_PASS_BEGIN(ScalarizeMaskedMemIntrin, "scalarize-masked-mem-intrin",
-                      "Scalarize unsupported masked memory intrinsics", false,
-                      false)
-INITIALIZE_PASS_END(ScalarizeMaskedMemIntrin, "scalarize-masked-mem-intrin",
-                    "Scalarize unsupported masked memory intrinsics", false,
-                    false)
+INITIALIZE_PASS(ScalarizeMaskedMemIntrin, DEBUG_TYPE,
+                "Scalarize unsupported masked memory intrinsics", false, false)
 
 FunctionPass *llvm::createScalarizeMaskedMemIntrinPass() {
   return new ScalarizeMaskedMemIntrin();