DebugInfo: Following up to r209677, refactor local variable emission to delay the choice between emitting the definition attributes or using DW_AT_abstract_definition

This doesn't fix the abstract variable handling yet, but it introduces a
similar delay mechanism as was added for subprograms, causing
DW_AT_location to be reordered to the beginning of the attribute list
for local variables, and fixes all the test fallout for that.

A subsequent commit will remove the abstract variable handling in
DbgVariable and just do the abstract variable lookup at module end to
ensure that abstract variables introduced after their concrete
counterparts are appropriately referenced by the concrete variable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210943 91177308-0d34-0410-b5e6-96231b3b80d8

20 files changed, 134 insertions, 83 deletions

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 433cc3769e..1284d1c922 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -783,6 +783,23 @@ void DwarfDebug::beginModule() {
   SectionMap[Asm->getObjFileLowering().getTextSection()];
 }
 
+void DwarfDebug::finishVariableDefinitions() {
+  for (const auto &Var : ConcreteVariables) {
+    DIE *VariableDie = Var->getDIE();
+    // FIXME: Consider the time-space tradeoff of just storing the unit pointer
+    // in the ConcreteVariables list, rather than looking it up again here.
+    // DIE::getUnit isn't simple - it walks parent pointers, etc.
+    DwarfCompileUnit *Unit = lookupUnit(VariableDie->getUnit());
+    assert(Unit);
+    DbgVariable *AbsVar = Var->getAbstractVariable();
+    if (AbsVar && AbsVar->getDIE()) {
+      Unit->addDIEEntry(*VariableDie, dwarf::DW_AT_abstract_origin,
+                        *AbsVar->getDIE());
+    } else
+      Unit->applyVariableAttributes(*Var, *VariableDie);
+  }
+}
+
 void DwarfDebug::finishSubprogramDefinitions() {
   const Module *M = MMI->getModule();
 
@@ -849,7 +866,9 @@ void DwarfDebug::collectDeadVariables() {
           DIVariable DV(Variables.getElement(vi));
           assert(DV.isVariable());
           DbgVariable NewVar(DV, nullptr, this);
-          SPDIE->addChild(SPCU->constructVariableDIE(NewVar));
+          auto VariableDie = SPCU->constructVariableDIE(NewVar);
+          SPCU->applyVariableAttributes(NewVar, *VariableDie);
+          SPDIE->addChild(std::move(VariableDie));
         }
       }
     }
@@ -859,6 +878,8 @@ void DwarfDebug::collectDeadVariables() {
 void DwarfDebug::finalizeModuleInfo() {
   finishSubprogramDefinitions();
 
+  finishVariableDefinitions();
+
   // Collect info for variables that were optimized out.
   collectDeadVariables();
 
@@ -1126,7 +1147,8 @@ void DwarfDebug::collectVariableInfoFromMMITable(
 
     DbgVariable *AbsDbgVariable =
         findAbstractVariable(DV, Scope->getScopeNode());
-    DbgVariable *RegVar = new DbgVariable(DV, AbsDbgVariable, this);
+    ConcreteVariables.push_back(make_unique<DbgVariable>(DV, AbsDbgVariable, this));
+    DbgVariable *RegVar = ConcreteVariables.back().get();
     RegVar->setFrameIndex(VI.Slot);
     addScopeVariable(Scope, RegVar);
   }
@@ -1194,7 +1216,8 @@ DwarfDebug::collectVariableInfo(SmallPtrSet<const MDNode *, 16> &Processed) {
     const MachineInstr *MInsn = Ranges.front().first;
     assert(MInsn->isDebugValue() && "History must begin with debug value");
     DbgVariable *AbsVar = findAbstractVariable(DV, Scope->getScopeNode());
-    DbgVariable *RegVar = new DbgVariable(MInsn, AbsVar, this);
+    ConcreteVariables.push_back(make_unique<DbgVariable>(MInsn, AbsVar, this));
+    DbgVariable *RegVar = ConcreteVariables.back().get();
     addScopeVariable(Scope, RegVar);
 
     // Check if the first DBG_VALUE is valid for the rest of the function.
@@ -1250,9 +1273,9 @@ DwarfDebug::collectVariableInfo(SmallPtrSet<const MDNode *, 16> &Processed) {
     if (!Processed.insert(DV))
       continue;
     if (LexicalScope *Scope = LScopes.findLexicalScope(DV.getContext())) {
-      auto *RegVar = new DbgVariable(
-          DV, findAbstractVariable(DV, Scope->getScopeNode()), this);
-      addScopeVariable(Scope, RegVar);
+      ConcreteVariables.push_back(make_unique<DbgVariable>(
+          DV, findAbstractVariable(DV, Scope->getScopeNode()), this));
+      addScopeVariable(Scope, ConcreteVariables.back().get());
     }
   }
 }
@@ -1554,12 +1577,8 @@ void DwarfDebug::endFunction(const MachineFunction *MF) {
   // Ownership of DbgVariables is a bit subtle - ScopeVariables owns all the
   // DbgVariables except those that are also in AbstractVariables (since they
   // can be used cross-function)
-  for (const auto &I : ScopeVariables)
-    for (const auto *Var : I.second)
-      if (!AbstractVariables.count(Var->getVariable()) || Var->getAbstractVariable())
-        delete Var;
   ScopeVariables.clear();
-  DeleteContainerPointers(CurrentFnArguments);
+  CurrentFnArguments.clear();
   DbgValues.clear();
   LabelsBeforeInsn.clear();
   LabelsAfterInsn.clear();
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.h b/lib/CodeGen/AsmPrinter/DwarfDebug.h
index 165eb5a2da..fcc9a7c80d 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.h
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.h
@@ -209,6 +209,7 @@ class DwarfDebug : public AsmPrinterHandler {
 
   // Collection of abstract variables.
   DenseMap<const MDNode *, std::unique_ptr<DbgVariable>> AbstractVariables;
+  SmallVector<std::unique_ptr<DbgVariable>, 64> ConcreteVariables;
 
   // Collection of DebugLocEntry. Stored in a linked list so that DIELocLists
   // can refer to them in spite of insertions into this list.
@@ -402,6 +403,8 @@ class DwarfDebug : public AsmPrinterHandler {
   /// \brief Collect info for variables that were optimized out.
   void collectDeadVariables();
 
+  void finishVariableDefinitions();
+
   void finishSubprogramDefinitions();
 
   /// \brief Finish off debug information after all functions have been
diff --git a/lib/CodeGen/AsmPrinter/DwarfUnit.cpp b/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
index 769ce9de64..9538bee7bc 100644
--- a/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
@@ -1514,6 +1514,17 @@ void DwarfUnit::applySubprogramAttributes(DISubprogram SP, DIE &SPDie) {
     addFlag(SPDie, dwarf::DW_AT_explicit);
 }
 
+void DwarfUnit::applyVariableAttributes(const DbgVariable &Var,
+                                        DIE &VariableDie) {
+  StringRef Name = Var.getName();
+  if (!Name.empty())
+    addString(VariableDie, dwarf::DW_AT_name, Name);
+  addSourceLine(VariableDie, Var.getVariable());
+  addType(VariableDie, Var.getType());
+  if (Var.isArtificial())
+    addFlag(VariableDie, dwarf::DW_AT_artificial);
+}
+
 // Return const expression if value is a GEP to access merged global
 // constant. e.g.
 // i8* getelementptr ({ i8, i8, i8, i8 }* @_MergedGlobals, i32 0, i32 0)
@@ -1787,24 +1798,13 @@ std::unique_ptr<DIE> DwarfUnit::constructVariableDIE(DbgVariable &DV,
 
 std::unique_ptr<DIE> DwarfUnit::constructVariableDIEImpl(const DbgVariable &DV,
                                                          bool Abstract) {
-  StringRef Name = DV.getName();
-
   // Define variable debug information entry.
   auto VariableDie = make_unique<DIE>(DV.getTag());
-  DbgVariable *AbsVar = DV.getAbstractVariable();
-  if (AbsVar && AbsVar->getDIE()) {
-    addDIEEntry(*VariableDie, dwarf::DW_AT_abstract_origin, *AbsVar->getDIE());
-  } else {
-    if (!Name.empty())
-      addString(*VariableDie, dwarf::DW_AT_name, Name);
-    addSourceLine(*VariableDie, DV.getVariable());
-    addType(*VariableDie, DV.getType());
-    if (DV.isArtificial())
-      addFlag(*VariableDie, dwarf::DW_AT_artificial);
-  }
 
-  if (Abstract)
+  if (Abstract) {
+    applyVariableAttributes(DV, *VariableDie);
     return VariableDie;
+  }
 
   // Add variable address.
 
diff --git a/lib/CodeGen/AsmPrinter/DwarfUnit.h b/lib/CodeGen/AsmPrinter/DwarfUnit.h
index 71034442b2..b7b83b282d 100644
--- a/lib/CodeGen/AsmPrinter/DwarfUnit.h
+++ b/lib/CodeGen/AsmPrinter/DwarfUnit.h
@@ -401,6 +401,7 @@ public:
 
   void applySubprogramAttributes(DISubprogram SP, DIE &SPDie);
   void applySubprogramAttributesToDefinition(DISubprogram SP, DIE &SPDie);
+  void applyVariableAttributes(const DbgVariable &Var, DIE &VariableDie);
 
   /// getOrCreateTypeDIE - Find existing DIE or create new DIE for the
   /// given DIType.
diff --git a/test/CodeGen/X86/2011-01-24-DbgValue-Before-Use.ll b/test/CodeGen/X86/2011-01-24-DbgValue-Before-Use.ll
index f0165284b1..625a35161c 100644
--- a/test/CodeGen/X86/2011-01-24-DbgValue-Before-Use.ll
+++ b/test/CodeGen/X86/2011-01-24-DbgValue-Before-Use.ll
@@ -8,11 +8,11 @@ target triple = "x86_64-apple-darwin10.0.0"
 ; CHECK: DW_TAG_subprogram
 ; CHECK: DW_TAG_variable
 ; CHECK: DW_TAG_variable
+; CHECK-NEXT:   DW_AT_location
 ; CHECK-NEXT:   DW_AT_name {{.*}} "z_s"
 ; CHECK-NEXT:   DW_AT_decl_file
 ; CHECK-NEXT:   DW_AT_decl_line
 ; CHECK-NEXT:   DW_AT_type{{.*}}{[[TYPE:.*]]}
-; CHECK-NEXT:   DW_AT_location
 ; CHECK: [[TYPE]]:
 ; CHECK-NEXT: DW_AT_name {{.*}} "int"
 
diff --git a/test/DebugInfo/SystemZ/variable-loc.ll b/test/DebugInfo/SystemZ/variable-loc.ll
index e0e4156d39..23df1cb555 100644
--- a/test/DebugInfo/SystemZ/variable-loc.ll
+++ b/test/DebugInfo/SystemZ/variable-loc.ll
@@ -14,11 +14,11 @@
 ; CHECK: brasl   %r14, populate_array@PLT
 
 ; DEBUG: DW_TAG_variable
-; DEBUG-NOT: DW_TAG
-; DEBUG: DW_AT_name {{.*}} "main_arr"
 ; Rather hard-coded, but 0x91 => DW_OP_fbreg and 0xa401 is SLEB128 encoded 164.
 ; DEBUG-NOT: DW_TAG
 ; DEBUG: DW_AT_location {{.*}}(<0x3> 91 a4 01 )
+; DEBUG-NOT: DW_TAG
+; DEBUG: DW_AT_name {{.*}} "main_arr"
 
 
 @.str = private unnamed_addr constant [13 x i8] c"Total is %d\0A\00", align 2
diff --git a/test/DebugInfo/X86/DW_AT_location-reference.ll b/test/DebugInfo/X86/DW_AT_location-reference.ll
index 6c5e32c093..f31b0ad325 100644
--- a/test/DebugInfo/X86/DW_AT_location-reference.ll
+++ b/test/DebugInfo/X86/DW_AT_location-reference.ll
@@ -31,11 +31,11 @@
 ; // The 'x' variable and its symbol reference location
 ; CHECK: .debug_info contents:
 ; CHECK:      DW_TAG_variable
+; CHECK-NEXT:   DW_AT_location [DW_FORM_sec_offset] (0x00000000)
 ; CHECK-NEXT:   DW_AT_name {{.*}} "x"
 ; CHECK-NEXT:   DW_AT_decl_file
 ; CHECK-NEXT:   DW_AT_decl_line
 ; CHECK-NEXT:   DW_AT_type
-; CHECK-NEXT:   DW_AT_location [DW_FORM_sec_offset] (0x00000000)
 
 ; Check that the location contains only 4 ranges - this verifies that the 4th
 ; and 5th ranges were successfully merged into a single range.
diff --git a/test/DebugInfo/X86/dbg-const-int.ll b/test/DebugInfo/X86/dbg-const-int.ll
index f2f51c9b0f..bf7ee08c66 100644
--- a/test/DebugInfo/X86/dbg-const-int.ll
+++ b/test/DebugInfo/X86/dbg-const-int.ll
@@ -1,12 +1,14 @@
-; RUN: llc -mtriple=x86_64-apple-darwin12 -filetype=obj %s -o %t
-; RUN: llvm-dwarfdump %t | FileCheck %s
+; RUN: llc -mtriple=x86_64-apple-darwin12 -filetype=obj < %s \
+; RUN:    | llvm-dwarfdump -debug-dump=info - | FileCheck %s
 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
 target triple = "x86_64-apple-macosx10.6.7"
 ; Radar 9511391
 
 ; CHECK: DW_TAG_variable
-; CHECK: "i"
-; CHECK: DW_AT_const_value [DW_FORM_sdata]   (42)
+; CHECK-NOT: DW_TAG
+; CHECK:   DW_AT_const_value [DW_FORM_sdata]   (42)
+; CHECK-NOT: DW_TAG
+; CHECK:   DW_AT_name {{.*}} "i"
 
 define i32 @foo() nounwind uwtable readnone optsize ssp {
 entry:
diff --git a/test/DebugInfo/X86/dbg-value-const-byref.ll b/test/DebugInfo/X86/dbg-value-const-byref.ll
index baba0cdb31..23fa3520a7 100644
--- a/test/DebugInfo/X86/dbg-value-const-byref.ll
+++ b/test/DebugInfo/X86/dbg-value-const-byref.ll
@@ -20,9 +20,10 @@
 ;
 ; CHECK: .debug_info contents:
 ; CHECK: DW_TAG_variable
-; CHECK-NEXT: DW_AT_name{{.*}}"i"
 ; CHECK-NOT: DW_TAG
 ; CHECK:     DW_AT_location [DW_FORM_data4]	([[LOC:.*]])
+; CHECK-NOT: DW_TAG
+; CHECK: DW_AT_name{{.*}}"i"
 ; CHECK: .debug_loc contents:
 ; CHECK: [[LOC]]:
 ;        consts 0x00000003
diff --git a/test/DebugInfo/X86/dbg-value-location.ll b/test/DebugInfo/X86/dbg-value-location.ll
index 9184217b18..55d1ae6a9f 100644
--- a/test/DebugInfo/X86/dbg-value-location.ll
+++ b/test/DebugInfo/X86/dbg-value-location.ll
@@ -6,11 +6,11 @@ target triple = "x86_64-apple-darwin10.0.0"
 ; rdar://8950491
 
 ;CHECK: DW_TAG_formal_parameter
+;CHECK-NEXT: DW_AT_location
 ;CHECK-NEXT: DW_AT_name {{.*}} "var"
 ;CHECK-NEXT: DW_AT_decl_file
 ;CHECK-NEXT: DW_AT_decl_line
 ;CHECK-NEXT: DW_AT_type
-;CHECK-NEXT: DW_AT_location
 
 @dfm = external global i32, align 4
 
diff --git a/test/DebugInfo/X86/debug-info-block-captured-self.ll b/test/DebugInfo/X86/debug-info-block-captured-self.ll
index 87e8f03d26..d753cc0f41 100644
--- a/test/DebugInfo/X86/debug-info-block-captured-self.ll
+++ b/test/DebugInfo/X86/debug-info-block-captured-self.ll
@@ -7,17 +7,19 @@
 ; This test is split into two parts, the frontend part can be found at
 ; llvm/tools/clang/test/CodeGenObjC/debug-info-block-captured-self.m
 ;
-; CHECK:      {{.*}}DW_AT_name{{.*}}_block_invoke{{.*}}
-; CHECK:      DW_TAG_variable
-; CHECK:      {{.*}}DW_AT_name{{.*}}"self"{{.*}}
+; CHECK: {{.*}}DW_AT_name{{.*}}_block_invoke{{.*}}
+; CHECK: DW_TAG_variable
 ; CHECK-NOT:  DW_TAG
-; CHECK:      DW_AT_location
+; CHECK:   DW_AT_location
+; CHECK-NOT: DW_TAG
+; CHECK:   DW_AT_name{{.*}}"self"{{.*}}
 ;
-; CHECK:      {{.*}}DW_AT_name{{.*}}_block_invoke{{.*}}
-; CHECK:      DW_TAG_variable
-; CHECK:      {{.*}}DW_AT_name{{.*}}"self"{{.*}}
+; CHECK: {{.*}}DW_AT_name{{.*}}_block_invoke{{.*}}
+; CHECK: DW_TAG_variable
 ; CHECK-NOT:  DW_TAG
-; CHECK:      DW_AT_location
+; CHECK:   DW_AT_location
+; CHECK-NOT: DW_TAG
+; CHECK:   DW_AT_name{{.*}}"self"{{.*}}
 ;
 ; Generated (and then reduced) from
 ; ----------------------------------------------------------------------
diff --git a/test/DebugInfo/X86/debug-info-blocks.ll b/test/DebugInfo/X86/debug-info-blocks.ll
index 430c157581..db1143cfa3 100644
--- a/test/DebugInfo/X86/debug-info-blocks.ll
+++ b/test/DebugInfo/X86/debug-info-blocks.ll
@@ -20,22 +20,23 @@
 ; CHECK-NOT: {{DW_TAG|NULL}}
 ; CHECK: DW_TAG_formal_parameter
 ; CHECK-NOT: DW_TAG
-; CHECK: DW_AT_name{{.*}}.block_descriptor
-; CHECK-NOT: DW_TAG
 ; CHECK: DW_AT_location
+; CHECK-NOT: DW_TAG
+; CHECK: DW_AT_name{{.*}}.block_descriptor
 
 ; CHECK-NOT: {{DW_TAG|NULL}}
 ; CHECK: DW_TAG_variable
-; CHECK-NEXT: DW_AT_name{{.*}}"self"
-; CHECK-NOT: DW_TAG
-; CHECK: DW_AT_type{{.*}}{[[APTR:.*]]}
-; CHECK-NOT: DW_TAG
-; CHECK: DW_AT_artificial
 ; CHECK-NOT: DW_TAG
 ; 0x06 = DW_OP_deref
 ; 0x23 = DW_OP_uconst
 ; 0x91 = DW_OP_fbreg
 ; CHECK: DW_AT_location{{.*}}91 {{[0-9]+}} 06 23 {{[0-9]+}} )
+; CHECK-NOT: DW_TAG
+; CHECK: DW_AT_name{{.*}}"self"
+; CHECK-NOT: DW_TAG
+; CHECK: DW_AT_type{{.*}}{[[APTR:.*]]}
+; CHECK-NOT: DW_TAG
+; CHECK: DW_AT_artificial
 
 ; CHECK: [[APTR]]:   DW_TAG_pointer_type
 ; CHECK-NEXT: {[[A]]}
diff --git a/test/DebugInfo/X86/debug-loc-offset.ll b/test/DebugInfo/X86/debug-loc-offset.ll
index 244aa53aa4..7866d0eac5 100644
--- a/test/DebugInfo/X86/debug-loc-offset.ll
+++ b/test/DebugInfo/X86/debug-loc-offset.ll
@@ -44,8 +44,10 @@
 ; CHECK: DW_AT_MIPS_linkage_name [DW_FORM_strp]{{.*}}"_Z3baz1A"
 ; CHECK-NOT: {{DW_TAG|NULL}}
 ; CHECK: DW_TAG_formal_parameter
-; CHECK-NEXT: DW_AT_name [DW_FORM_strp]{{.*}}"a"
+; CHECK-NOT: DW_TAG
 ; CHECK: DW_AT_location [DW_FORM_sec_offset]   (0x00000000)
+; CHECK-NOT: DW_TAG
+; CHECK: DW_AT_name [DW_FORM_strp]{{.*}}"a"
 
 ; CHECK: DW_TAG_variable
 ; CHECK: DW_AT_location [DW_FORM_exprloc]
diff --git a/test/DebugInfo/X86/empty-and-one-elem-array.ll b/test/DebugInfo/X86/empty-and-one-elem-array.ll
index 974bd73479..f5c37df1e5 100644
--- a/test/DebugInfo/X86/empty-and-one-elem-array.ll
+++ b/test/DebugInfo/X86/empty-and-one-elem-array.ll
@@ -28,6 +28,11 @@ declare void @llvm.dbg.declare(metadata, metadata) nounwind readnone
 ; An empty array should not have an AT_upper_bound attribute. But an array of 1
 ; should.
 
+; CHECK:      DW_TAG_base_type
+; CHECK-NEXT: DW_AT_name [DW_FORM_strp]  ( .debug_str[{{.*}}] = "int")
+; CHECK-NEXT: DW_AT_encoding [DW_FORM_data1]   (0x05)
+; CHECK-NEXT: DW_AT_byte_size [DW_FORM_data1]  (0x04)
+
 ; int foo::b[1]:
 ; CHECK: DW_TAG_structure_type
 ; CHECK: DW_AT_name{{.*}}"foo"
@@ -36,11 +41,6 @@ declare void @llvm.dbg.declare(metadata, metadata) nounwind readnone
 ; CHECK-NEXT: DW_AT_name [DW_FORM_strp]  ( .debug_str[{{.*}}] = "b")
 ; CHECK-NEXT: DW_AT_type [DW_FORM_ref4]
 
-; CHECK:      DW_TAG_base_type
-; CHECK-NEXT: DW_AT_name [DW_FORM_strp]  ( .debug_str[{{.*}}] = "int")
-; CHECK-NEXT: DW_AT_encoding [DW_FORM_data1]   (0x05)
-; CHECK-NEXT: DW_AT_byte_size [DW_FORM_data1]  (0x04)
-
 ; int[1]:
 ; CHECK:      DW_TAG_array_type [{{.*}}] *
 ; CHECK-NEXT: DW_AT_type [DW_FORM_ref4]
diff --git a/test/DebugInfo/X86/misched-dbg-value.ll b/test/DebugInfo/X86/misched-dbg-value.ll
index 478f221d3f..c713e65110 100644
--- a/test/DebugInfo/X86/misched-dbg-value.ll
+++ b/test/DebugInfo/X86/misched-dbg-value.ll
@@ -6,20 +6,33 @@
 ; function parameters.
 ; CHECK: .debug_info contents:
 ; CHECK: DW_TAG_compile_unit
-; CHECK: DW_TAG_subprogram
-; CHECK: Proc8
-; CHECK: DW_TAG_formal_parameter
-; CHECK: Array1Par
-; CHECK: DW_AT_location
-; CHECK: DW_TAG_formal_parameter
-; CHECK: Array2Par
-; CHECK: DW_AT_location
-; CHECK: DW_TAG_formal_parameter
-; CHECK: IntParI1
-; CHECK: DW_AT_location
-; CHECK: DW_TAG_formal_parameter
-; CHECK: IntParI2
-; CHECK: DW_AT_location
+; CHECK:   DW_TAG_subprogram
+; CHECK-NOT: DW_TAG
+; CHECK:     DW_AT_name {{.*}} "Proc8"
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK:     DW_TAG_formal_parameter
+; CHECK-NOT: DW_TAG
+; CHECK:       DW_AT_location
+; CHECK-NOT: DW_TAG
+; CHECK:       DW_AT_name {{.*}} "Array1Par"
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK:     DW_TAG_formal_parameter
+; CHECK-NOT: DW_TAG
+; CHECK:       DW_AT_location
+; CHECK-NOT: DW_TAG
+; CHECK:       DW_AT_name {{.*}} "Array2Par"
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK:     DW_TAG_formal_parameter
+; CHECK-NOT: DW_TAG
+; CHECK:       DW_AT_location
+; CHECK-NOT: DW_TAG
+; CHECK:       DW_AT_name {{.*}} "IntParI1"
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK:     DW_TAG_formal_parameter
+; CHECK-NOT: DW_TAG
+; CHECK:       DW_AT_location
+; CHECK-NOT: DW_TAG
+; CHECK:       DW_AT_name {{.*}} "IntParI2"
 
 %struct.Record = type { %struct.Record*, i32, i32, i32, [31 x i8] }
 
diff --git a/test/DebugInfo/X86/op_deref.ll b/test/DebugInfo/X86/op_deref.ll
index 810ebbc09a..59382d19f1 100644
--- a/test/DebugInfo/X86/op_deref.ll
+++ b/test/DebugInfo/X86/op_deref.ll
@@ -1,18 +1,21 @@
-; RUN: llc -O0 -mtriple=x86_64-apple-darwin %s -o %t -filetype=obj
-; RUN: llvm-dwarfdump -debug-dump=info %t | FileCheck %s -check-prefix=DW-CHECK
-; RUN: llc -O0 -mtriple=x86_64-apple-darwin %s -o %t -filetype=obj -dwarf-version=3
-; RUN: llvm-dwarfdump -debug-dump=info %t | FileCheck %s -check-prefix=DWARF3
+; RUN: llc -O0 -mtriple=x86_64-apple-darwin < %s -filetype=obj \
+; RUN:     | llvm-dwarfdump -debug-dump=info - \
+; RUN:     | FileCheck %s -check-prefix=CHECK -check-prefix=DWARF4
+; RUN: llc -O0 -mtriple=x86_64-apple-darwin < %s -filetype=obj -dwarf-version=3 \
+; RUN:     | llvm-dwarfdump -debug-dump=info - \
+; RUN:     | FileCheck %s -check-prefix=CHECK -check-prefix=DWARF3
 
-; DW-CHECK: DW_AT_name [DW_FORM_strp]  ( .debug_str[0x00000067] = "vla")
 ; FIXME: The location here needs to be fixed, but llvm-dwarfdump doesn't handle
 ; DW_AT_location lists yet.
-; DW-CHECK: DW_AT_location [DW_FORM_sec_offset]                      (0x00000000)
+; DWARF4: DW_AT_location [DW_FORM_sec_offset]                      (0x00000000)
 
-; DWARF3: DW_AT_name [DW_FORM_strp]  ( .debug_str[0x00000067] = "vla")
 ; FIXME: The location here needs to be fixed, but llvm-dwarfdump doesn't handle
 ; DW_AT_location lists yet.
 ; DWARF3: DW_AT_location [DW_FORM_data4]                      (0x00000000)
 
+; CHECK-NOT: DW_TAG
+; CHECK: DW_AT_name [DW_FORM_strp]  ( .debug_str[0x00000067] = "vla")
+
 ; Unfortunately llvm-dwarfdump can't unparse a list of DW_AT_locations
 ; right now, so we check the asm output:
 ; RUN: llc -O0 -mtriple=x86_64-apple-darwin %s -o - -filetype=asm | FileCheck %s -check-prefix=ASM-CHECK
diff --git a/test/DebugInfo/X86/parameters.ll b/test/DebugInfo/X86/parameters.ll
index 8248cf63c4..4215c21721 100644
--- a/test/DebugInfo/X86/parameters.ll
+++ b/test/DebugInfo/X86/parameters.ll
@@ -23,13 +23,15 @@
 ; }
 
 ; CHECK: debug_info contents
-; CHECK: DW_AT_name{{.*}} = "f"
 ; 0x74 is DW_OP_breg4, showing that the parameter is accessed indirectly
 ; (with a zero offset) from the register parameter
 ; CHECK: DW_AT_location{{.*}}(<0x0{{.}}> 74 00
+; CHECK-NOT: DW_TAG
+; CHECK: DW_AT_name{{.*}} = "f"
 
-; CHECK: DW_AT_name{{.*}} = "g"
 ; CHECK: DW_AT_location{{.*}}([[G_LOC:0x[0-9]*]])
+; CHECK-NOT: DW_TAG
+; CHECK: DW_AT_name{{.*}} = "g"
 ; CHECK: debug_loc contents
 ; CHECK-NEXT: [[G_LOC]]: Beginning
 ; CHECK-NEXT:               Ending
diff --git a/test/DebugInfo/X86/sret.ll b/test/DebugInfo/X86/sret.ll
index fed4334c27..faf5158384 100644
--- a/test/DebugInfo/X86/sret.ll
+++ b/test/DebugInfo/X86/sret.ll
@@ -3,8 +3,8 @@
 
 ; Based on the debuginfo-tests/sret.cpp code.
 
-; CHECK: DW_AT_GNU_dwo_id [DW_FORM_data8] (0x72aabf538392d298)
-; CHECK: DW_AT_GNU_dwo_id [DW_FORM_data8] (0x72aabf538392d298)
+; CHECK: DW_AT_GNU_dwo_id [DW_FORM_data8] (0x5b59949640ec1580)
+; CHECK: DW_AT_GNU_dwo_id [DW_FORM_data8] (0x5b59949640ec1580)
 
 %class.A = type { i32 (...)**, i32 }
 %class.B = type { i8 }
diff --git a/test/DebugInfo/cross-cu-inlining.ll b/test/DebugInfo/cross-cu-inlining.ll
index 266a24ddc6..899558a0b8 100644
--- a/test/DebugInfo/cross-cu-inlining.ll
+++ b/test/DebugInfo/cross-cu-inlining.ll
@@ -56,8 +56,9 @@
 ; CHECK:   DW_AT_abstract_origin {{.*}} {0x[[ABS_FUNC]]}
 ; CHECK:   DW_TAG_formal_parameter
 ; CHECK-NOT: DW_TAG
-; CHECK:     DW_AT_abstract_origin {{.*}} {0x[[ABS_VAR]]}
 ; CHECK:     DW_AT_location
+; CHECK-NOT: DW_TAG
+; CHECK:     DW_AT_abstract_origin {{.*}} {0x[[ABS_VAR]]}
 
 
 @i = external global i32
diff --git a/test/DebugInfo/dead-argument-order.ll b/test/DebugInfo/dead-argument-order.ll
index 921a973090..ea805a4872 100644
--- a/test/DebugInfo/dead-argument-order.ll
+++ b/test/DebugInfo/dead-argument-order.ll
@@ -28,8 +28,9 @@
 ; CHECK-NOT: {{DW_TAG|NULL}}
 ; CHECK:   DW_TAG_formal_parameter
 ; CHECK-NOT: DW_TAG
-; CHECK:     DW_AT_name {{.*}} "i"
 ; CHECK:     DW_AT_location
+; CHECK-NOT: DW_TAG
+; CHECK:     DW_AT_name {{.*}} "i"
 
 
 %struct.S = type { i32 }