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/MachineBlockFrequencyInfo.cpp b/llvm/lib/CodeGen/MachineBlockFrequencyInfo.cpp
index 9c7367b..4d1ec11 100644
--- a/llvm/lib/CodeGen/MachineBlockFrequencyInfo.cpp
+++ b/llvm/lib/CodeGen/MachineBlockFrequencyInfo.cpp
@@ -26,7 +26,7 @@
 
 using namespace llvm;
 
-#define DEBUG_TYPE "block-freq"
+#define DEBUG_TYPE "machine-block-freq"
 
 
 static cl::opt<GVDAGType> ViewMachineBlockFreqPropagationDAG(
@@ -149,11 +149,11 @@
 
 } // end namespace llvm
 
-INITIALIZE_PASS_BEGIN(MachineBlockFrequencyInfo, "machine-block-freq",
+INITIALIZE_PASS_BEGIN(MachineBlockFrequencyInfo, DEBUG_TYPE,
                       "Machine Block Frequency Analysis", true, true)
 INITIALIZE_PASS_DEPENDENCY(MachineBranchProbabilityInfo)
 INITIALIZE_PASS_DEPENDENCY(MachineLoopInfo)
-INITIALIZE_PASS_END(MachineBlockFrequencyInfo, "machine-block-freq",
+INITIALIZE_PASS_END(MachineBlockFrequencyInfo, DEBUG_TYPE,
                     "Machine Block Frequency Analysis", true, true)
 
 char MachineBlockFrequencyInfo::ID = 0;