DebugInfo: Metadata constructs now start with DI*

LLVM r236120 renamed debug info IR constructs to use a `DI` prefix, now
that the `DIDescriptor` hierarchy has been gone for about a week.  This
commit was generated using the rename-md-di-nodes.sh upgrade script
attached to PR23080, followed by running clang-format-diff.py on the
`lib/` portion of the patch.

llvm-svn: 236121
diff --git a/clang/test/CodeGenCXX/debug-info-scope.cpp b/clang/test/CodeGenCXX/debug-info-scope.cpp
index 9221ff7..478b789 100644
--- a/clang/test/CodeGenCXX/debug-info-scope.cpp
+++ b/clang/test/CodeGenCXX/debug-info-scope.cpp
@@ -9,31 +9,31 @@
 void f();
 
 void func() {
-  // CHECK: = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "i"
+  // CHECK: = !DILocalVariable(tag: DW_TAG_auto_variable, name: "i"
   // CHECK-SAME:               scope: [[IF1:![0-9]*]]
   // CHECK-SAME:               line: [[@LINE+2]]
-  // CHECK: [[IF1]] = distinct !MDLexicalBlock({{.*}}line: [[@LINE+1]])
+  // CHECK: [[IF1]] = distinct !DILexicalBlock({{.*}}line: [[@LINE+1]])
   if (int i = src())
     f();
 
-  // CHECK: = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "i"
+  // CHECK: = !DILocalVariable(tag: DW_TAG_auto_variable, name: "i"
   // CHECK-SAME:               scope: [[IF2:![0-9]*]]
   // CHECK-SAME:               line: [[@LINE+2]]
-  // CHECK: [[IF2]] = distinct !MDLexicalBlock({{.*}}line: [[@LINE+1]])
+  // CHECK: [[IF2]] = distinct !DILexicalBlock({{.*}}line: [[@LINE+1]])
   if (int i = src()) {
     f();
   } else
     f();
 
-  // CHECK: = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "i"
+  // CHECK: = !DILocalVariable(tag: DW_TAG_auto_variable, name: "i"
   // CHECK-SAME:               scope: [[FOR:![0-9]*]]
   // CHECK-SAME:               line: [[@LINE+2]]
-  // CHECK: [[FOR]] = distinct !MDLexicalBlock({{.*}}line: [[@LINE+1]])
+  // CHECK: [[FOR]] = distinct !DILexicalBlock({{.*}}line: [[@LINE+1]])
   for (int i = 0;
-  // CHECK: = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "b"
+  // CHECK: = !DILocalVariable(tag: DW_TAG_auto_variable, name: "b"
   // CHECK-SAME:               scope: [[FOR_BODY:![0-9]*]]
   // CHECK-SAME:               line: [[@LINE+6]]
-  // CHECK: [[FOR_BODY]] = distinct !MDLexicalBlock({{.*}}line: [[@LINE-4]])
+  // CHECK: [[FOR_BODY]] = distinct !DILexicalBlock({{.*}}line: [[@LINE-4]])
   // The scope could be located at 'bool b', but LLVM drops line information for
   // scopes anyway, so it's not terribly important.
   // FIXME: change the debug info schema to not include locations of scopes,
@@ -41,32 +41,32 @@
        bool b = i != 10; ++i)
     f();
 
-  // CHECK: = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "i"
+  // CHECK: = !DILocalVariable(tag: DW_TAG_auto_variable, name: "i"
   // CHECK-SAME:               scope: [[FOR:![0-9]*]]
   // CHECK-SAME:               line: [[@LINE+2]]
-  // CHECK: [[FOR]] = distinct !MDLexicalBlock({{.*}}line: [[@LINE+1]])
+  // CHECK: [[FOR]] = distinct !DILexicalBlock({{.*}}line: [[@LINE+1]])
   for (int i = 0; i != 10; ++i) {
     // FIXME: Do not include scopes that have only other scopes (and no variables
     // or using declarations) as direct children, they just waste
     // space/relocations/etc.
-    // CHECK: [[FOR_LOOP_INCLUDING_COND:!.*]] = distinct !MDLexicalBlock(scope: [[FOR]],{{.*}} line: [[@LINE-4]])
-    // CHECK: = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "b"
+    // CHECK: [[FOR_LOOP_INCLUDING_COND:!.*]] = distinct !DILexicalBlock(scope: [[FOR]],{{.*}} line: [[@LINE-4]])
+    // CHECK: = !DILocalVariable(tag: DW_TAG_auto_variable, name: "b"
     // CHECK-SAME:               scope: [[FOR_COMPOUND:![0-9]*]]
     // CHECK-SAME:               line: [[@LINE+2]]
-    // CHECK: [[FOR_COMPOUND]] = distinct !MDLexicalBlock(scope: [[FOR_LOOP_INCLUDING_COND]],{{.*}} line: [[@LINE-8]])
+    // CHECK: [[FOR_COMPOUND]] = distinct !DILexicalBlock(scope: [[FOR_LOOP_INCLUDING_COND]],{{.*}} line: [[@LINE-8]])
     bool b = i % 2;
   }
 
   int x[] = {1, 2};
-  // CHECK: = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "__range"
+  // CHECK: = !DILocalVariable(tag: DW_TAG_auto_variable, name: "__range"
   // CHECK-SAME:               scope: [[RANGE_FOR:![0-9]*]]
   // CHECK-NOT:                line:
   // CHECK-SAME:               ){{$}}
-  // CHECK: [[RANGE_FOR]] = distinct !MDLexicalBlock({{.*}}, line: [[@LINE+1]])
+  // CHECK: [[RANGE_FOR]] = distinct !DILexicalBlock({{.*}}, line: [[@LINE+1]])
   for (int i : x) {
-    // CHECK: = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "i"
+    // CHECK: = !DILocalVariable(tag: DW_TAG_auto_variable, name: "i"
     // CHECK-SAME:               scope: [[RANGE_FOR_BODY:![0-9]*]]
     // CHECK-SAME:               line: [[@LINE-3]]
-    // CHECK: [[RANGE_FOR_BODY]] = distinct !MDLexicalBlock(scope: [[RANGE_FOR]],{{.*}} line: [[@LINE-4]])
+    // CHECK: [[RANGE_FOR_BODY]] = distinct !DILexicalBlock(scope: [[RANGE_FOR]],{{.*}} line: [[@LINE-4]])
   }
 }