This reapplies r207130 with an additional testcase+and a missing check for

AllocaInst that was missing in one location.
Debug info for optimized code: Support variables that are on the stack and
described by DBG_VALUEs during their lifetime.

Previously, when a variable was at a FrameIndex for any part of its
lifetime, this would shadow all other DBG_VALUEs and only a single
fbreg location would be emitted, which in fact is only valid for a small
range and not the entire lexical scope of the variable. The included
dbg-value-const-byref testcase demonstrates this.

This patch fixes this by
Local
- emitting dbg.value intrinsics for allocas that are passed by reference
- dropping all dbg.declares (they are now fully lowered to dbg.values)
SelectionDAG
- renamed constructors for SDDbgValue for better readability.
- fix UserValue::match() to handle indirect values correctly
- not inserting an MMI table entries for dbg.values that describe allocas.
- lowering dbg.values that describe allocas into *indirect* DBG_VALUEs.
CodeGenPrepare
- leaving dbg.values for an alloca were they are (see comment)
Other
- regenerated/updated instcombine.ll testcase and included source

rdar://problem/16679879
http://reviews.llvm.org/D3374

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207165 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 173 insertions, 90 deletions

diff --git a/test/DebugInfo/X86/array.ll b/test/DebugInfo/X86/array.ll
new file mode 100644
index 0000000000..3d9054bb89
--- /dev/null
+++ b/test/DebugInfo/X86/array.ll
@@ -0,0 +1,101 @@
+; ModuleID = 'array.c'
+;
+; From (clang -g -c -O1):
+;
+; void f(int* p) {
+;   p[0] = 42;
+; }
+;
+; int main(int argc, char** argv) {
+;   int array[4] = { 0, 1, 2, 3 };
+;   f(array);
+;   return array[0];
+; }
+;
+; RUN: llc -filetype=asm %t -o - | llvm-dwarfdump -debug-dump=info - | FileCheck %s
+; Test that we only emit register-indirect locations for the array array.
+; rdar://problem/14874886
+;
+; CHECK:     ##DEBUG_VALUE: main:array <- [R{{.*}}+0]
+; CHECK-NOT: ##DEBUG_VALUE: main:array <- R{{.*}}
+target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-apple-macosx10.9.0"
+
+@main.array = private unnamed_addr constant [4 x i32] [i32 0, i32 1, i32 2, i32 3], align 16
+
+; Function Attrs: nounwind ssp uwtable
+define void @f(i32* nocapture %p) #0 {
+  tail call void @llvm.dbg.value(metadata !{i32* %p}, i64 0, metadata !11), !dbg !28
+  store i32 42, i32* %p, align 4, !dbg !29, !tbaa !30
+  ret void, !dbg !34
+}
+
+; Function Attrs: nounwind ssp uwtable
+define i32 @main(i32 %argc, i8** nocapture readnone %argv) #0 {
+  %array = alloca [4 x i32], align 16
+  tail call void @llvm.dbg.value(metadata !{i32 %argc}, i64 0, metadata !19), !dbg !35
+  tail call void @llvm.dbg.value(metadata !{i8** %argv}, i64 0, metadata !20), !dbg !35
+  tail call void @llvm.dbg.value(metadata !{[4 x i32]* %array}, i64 0, metadata !21), !dbg !36
+  %1 = bitcast [4 x i32]* %array to i8*, !dbg !36
+  call void @llvm.memcpy.p0i8.p0i8.i64(i8* %1, i8* bitcast ([4 x i32]* @main.array to i8*), i64 16, i32 16, i1 false), !dbg !36
+  tail call void @llvm.dbg.value(metadata !{[4 x i32]* %array}, i64 0, metadata !21), !dbg !36
+  %2 = getelementptr inbounds [4 x i32]* %array, i64 0, i64 0, !dbg !37
+  call void @f(i32* %2), !dbg !37
+  tail call void @llvm.dbg.value(metadata !{[4 x i32]* %array}, i64 0, metadata !21), !dbg !36
+  %3 = load i32* %2, align 16, !dbg !38, !tbaa !30
+  ret i32 %3, !dbg !38
+}
+
+; Function Attrs: nounwind
+declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1) #1
+
+; Function Attrs: nounwind readnone
+declare void @llvm.dbg.value(metadata, i64, metadata) #2
+
+attributes #0 = { nounwind ssp uwtable }
+attributes #1 = { nounwind }
+attributes #2 = { nounwind readnone }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!25, !26}
+!llvm.ident = !{!27}
+
+!0 = metadata !{i32 786449, metadata !1, i32 12, metadata !"clang version 3.5.0 ", i1 true, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2, metadata !"", i32 1} ; [ DW_TAG_compile_unit ] [/array.c] [DW_LANG_C99]
+!1 = metadata !{metadata !"array.c", metadata !""}
+!2 = metadata !{}
+!3 = metadata !{metadata !4, metadata !12}
+!4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"f", metadata !"f", metadata !"", i32 1, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, void (i32*)* @f, null, null, metadata !10, i32 1} ; [ DW_TAG_subprogram ] [line 1] [def] [f]
+!5 = metadata !{i32 786473, metadata !1}          ; [ DW_TAG_file_type ] [/array.c]
+!6 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !7, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!7 = metadata !{null, metadata !8}
+!8 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !9} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from int]
+!9 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
+!10 = metadata !{metadata !11}
+!11 = metadata !{i32 786689, metadata !4, metadata !"p", metadata !5, i32 16777217, metadata !8, i32 0, i32 0} ; [ DW_TAG_arg_variable ] [p] [line 1]
+!12 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"main", metadata !"main", metadata !"", i32 5, metadata !13, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, i32 (i32, i8**)* @main, null, null, metadata !18, i32 5} ; [ DW_TAG_subprogram ] [line 5] [def] [main]
+!13 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !14, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!14 = metadata !{metadata !9, metadata !9, metadata !15}
+!15 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !16} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from ]
+!16 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !17} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from char]
+!17 = metadata !{i32 786468, null, null, metadata !"char", i32 0, i64 8, i64 8, i64 0, i32 0, i32 6} ; [ DW_TAG_base_type ] [char] [line 0, size 8, align 8, offset 0, enc DW_ATE_signed_char]
+!18 = metadata !{metadata !19, metadata !20, metadata !21}
+!19 = metadata !{i32 786689, metadata !12, metadata !"argc", metadata !5, i32 16777221, metadata !9, i32 0, i32 0} ; [ DW_TAG_arg_variable ] [argc] [line 5]
+!20 = metadata !{i32 786689, metadata !12, metadata !"argv", metadata !5, i32 33554437, metadata !15, i32 0, i32 0} ; [ DW_TAG_arg_variable ] [argv] [line 5]
+!21 = metadata !{i32 786688, metadata !12, metadata !"array", metadata !5, i32 6, metadata !22, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [array] [line 6]
+!22 = metadata !{i32 786433, null, null, metadata !"", i32 0, i64 128, i64 32, i32 0, i32 0, metadata !9, metadata !23, i32 0, null, null, null} ; [ DW_TAG_array_type ] [line 0, size 128, align 32, offset 0] [from int]
+!23 = metadata !{metadata !24}
+!24 = metadata !{i32 786465, i64 0, i64 4}        ; [ DW_TAG_subrange_type ] [0, 3]
+!25 = metadata !{i32 2, metadata !"Dwarf Version", i32 2}
+!26 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}
+!27 = metadata !{metadata !"clang version 3.5.0 "}
+!28 = metadata !{i32 1, i32 0, metadata !4, null}
+!29 = metadata !{i32 2, i32 0, metadata !4, null}
+!30 = metadata !{metadata !31, metadata !31, i64 0}
+!31 = metadata !{metadata !"int", metadata !32, i64 0}
+!32 = metadata !{metadata !"omnipotent char", metadata !33, i64 0}
+!33 = metadata !{metadata !"Simple C/C++ TBAA"}
+!34 = metadata !{i32 3, i32 0, metadata !4, null}
+!35 = metadata !{i32 5, i32 0, metadata !12, null}
+!36 = metadata !{i32 6, i32 0, metadata !12, null}
+!37 = metadata !{i32 7, i32 0, metadata !12, null}
+!38 = metadata !{i32 8, i32 0, metadata !12, null} ; [ DW_TAG_imported_declaration ]
diff --git a/test/DebugInfo/X86/dbg-value-const-byref.ll b/test/DebugInfo/X86/dbg-value-const-byref.ll
index 2f808786a8..baba0cdb31 100644
--- a/test/DebugInfo/X86/dbg-value-const-byref.ll
+++ b/test/DebugInfo/X86/dbg-value-const-byref.ll
@@ -37,6 +37,10 @@
 ; CHECK: Beginning address offset: [[C2]]
 ; CHECK:    Ending address offset: [[R1:.*]]
 ; CHECK:     Location description: 50 93 04
+;         rdi+0
+; CHECK: Beginning address offset: [[R1]]
+; CHECK:    Ending address offset: [[R2:.*]]
+; CHECK:     Location description: 75 00
 ;
 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "x86_64-apple-macosx10.9.0"
@@ -51,6 +55,7 @@ entry:
   %call1 = call i32 (...)* @f1() #3, !dbg !19
   call void @llvm.dbg.value(metadata !{i32 %call1}, i64 0, metadata !10), !dbg !19
   store i32 %call1, i32* %i, align 4, !dbg !19, !tbaa !20
+  call void @llvm.dbg.value(metadata !{i32* %i}, i64 0, metadata !10), !dbg !24
   call void @f2(i32* %i) #3, !dbg !24
   ret i32 0, !dbg !25
 }
diff --git a/test/DebugInfo/X86/instcombine-instrinsics.ll b/test/DebugInfo/X86/instcombine-instrinsics.ll
index 41dd09f5a4..2fd7ee319c 100644
--- a/test/DebugInfo/X86/instcombine-instrinsics.ll
+++ b/test/DebugInfo/X86/instcombine-instrinsics.ll
@@ -1,102 +1,79 @@
-; RUN: opt < %s -O2 -S | FileCheck %s
+; RUN: opt %s -O2 -S -o - | FileCheck %s
 ; Verify that we emit the same intrinsic at most once.
-; CHECK: call void @llvm.dbg.value(metadata !{%struct.i14** %i14}
-; CHECK-NOT: call void @llvm.dbg.value(metadata !{%struct.i14** %i14}
+; rdar://problem/13056109
+;
+; CHECK: call void @llvm.dbg.value(metadata !{%struct.i14** %p}
+; CHECK-NOT: call void @llvm.dbg.value(metadata !{%struct.i14** %p}
+; CHECK-NEXT: call i32 @foo
 ; CHECK: ret
+;
+;
+; typedef struct {
+;   long i;
+; } i14;
+;
+; int foo(i14**);
+;
+;   void init() {
+;     i14* p = 0;
+;     foo(&p);
+;     p->i |= 4;
+;     foo(&p);
+;   }
+;
+; ModuleID = 'instcombine_intrinsics.c'
+target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-apple-macosx10.9.0"
 
-;*** IR Dump After Dead Argument Elimination ***
-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-S128"
-target triple = "x86_64-apple-macosx10.8.0"
+%struct.i14 = type { i64 }
 
-%struct.i3 = type { i32 }
-%struct.i14 = type { i32 }
-%struct.i24 = type opaque
-
-define %struct.i3* @barz(i64 %i9) nounwind {
-entry:
-  br label %while.cond
-
-while.cond:                                       ; preds = %while.body, %entry
-  br label %while.body
-
-while.body:                                       ; preds = %while.cond
-  br label %while.cond
-}
-
-declare void @llvm.dbg.declare(metadata, metadata)
-
-define void @init() nounwind {
-entry:
-  %i14 = alloca %struct.i14*, align 8
-  call void @llvm.dbg.declare(metadata !{%struct.i14** %i14}, metadata !25)
-  store %struct.i14* null, %struct.i14** %i14, align 8
-  %call = call i32 @foo(i8* bitcast (void ()* @bar to i8*), %struct.i14** %i14)
-  %0 = load %struct.i14** %i14, align 8
-  %i16 = getelementptr inbounds %struct.i14* %0, i32 0, i32 0
-  %1 = load i32* %i16, align 4
-  %or = or i32 %1, 4
-  store i32 %or, i32* %i16, align 4
-  %call4 = call i32 @foo(i8* bitcast (void ()* @baz to i8*), %struct.i14** %i14)
-  ret void
+; Function Attrs: nounwind ssp uwtable
+define void @init() #0 {
+  %p = alloca %struct.i14*, align 8
+  call void @llvm.dbg.declare(metadata !{%struct.i14** %p}, metadata !11), !dbg !18
+  store %struct.i14* null, %struct.i14** %p, align 8, !dbg !18
+  %1 = call i32 @foo(%struct.i14** %p), !dbg !19
+  %2 = load %struct.i14** %p, align 8, !dbg !20
+  %3 = getelementptr inbounds %struct.i14* %2, i32 0, i32 0, !dbg !20
+  %4 = load i64* %3, align 8, !dbg !20
+  %5 = or i64 %4, 4, !dbg !20
+  store i64 %5, i64* %3, align 8, !dbg !20
+  %6 = call i32 @foo(%struct.i14** %p), !dbg !21
+  ret void, !dbg !22
 }
 
-declare i32 @foo(i8*, %struct.i14**) nounwind
-
-define internal void @bar() nounwind {
-entry:
-  %i9 = alloca i64, align 8
-  store i64 0, i64* %i9, align 8
-  %call = call i32 @put(i64 0, i64* %i9, i64 0, %struct.i24* null)
-  ret void
-}
-
-define internal void @baz() nounwind {
-entry:
-  ret void
-}
+; Function Attrs: nounwind readnone
+declare void @llvm.dbg.declare(metadata, metadata) #1
 
-declare i32 @put(i64, i64*, i64, %struct.i24*) nounwind readnone
+declare i32 @foo(%struct.i14**)
 
-declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
+attributes #0 = { nounwind ssp uwtable }
+attributes #1 = { nounwind readnone }
 
 !llvm.dbg.cu = !{!0}
-!llvm.module.flags = !{!73}
+!llvm.module.flags = !{!8, !9}
+!llvm.ident = !{!10}
 
-!0 = metadata !{i32 786449, metadata !1, i32 12, metadata !"clang version 3.3 ", i1 true, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !48, null, metadata !""} ; [ DW_TAG_compile_unit ]
-!1 = metadata !{metadata !"i1", metadata !""}
-!2 = metadata !{i32 0}
-!3 = metadata !{metadata !4, metadata !21, metadata !33, metadata !47}
-!4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"i2", metadata !"i2", metadata !"", i32 31, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, %struct.i3* (i64)* @barz, null, null, metadata !16, i32 32} ; [ DW_TAG_subprogram ] [line 31]  [scope 32]
-!5 = metadata !{i32 786473, metadata !1}          ; [ DW_TAG_file_type ]
+!0 = metadata !{i32 786449, metadata !1, i32 12, metadata !"clang version 3.5.0 ", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2, metadata !"", i32 1} ; [ DW_TAG_compile_unit ] [instcombine_intrinsics.c] [DW_LANG_C99]
+!1 = metadata !{metadata !"instcombine_intrinsics.c", metadata !""}
+!2 = metadata !{}
+!3 = metadata !{metadata !4}
+!4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"init", metadata !"init", metadata !"", i32 7, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 0, i1 false, void ()* @init, null, null, metadata !2, i32 7} ; [ DW_TAG_subprogram ] [line 7] [def] [init]
+!5 = metadata !{i32 786473, metadata !1}          ; [ DW_TAG_file_type ] [instcombine_intrinsics.c]
 !6 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !7, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
-!7 = metadata !{metadata !8, metadata !13}
-!8 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !9} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from i3]
-!9 = metadata !{i32 786451, metadata !1, null, metadata !"i3", i32 25, i64 32, i64 32, i32 0, i32 0, null, metadata !10, i32 0, null, null, null} ; [ DW_TAG_structure_type ] [i3] [line 25, size 32, align 32, offset 0] [def] [from ]
-!10 = metadata !{metadata !11}
-!11 = metadata !{i32 786445, metadata !1, metadata !9, metadata !"i4", i32 26, i64 32, i64 32, i64 0, i32 0, metadata !12} ; [ DW_TAG_member ]  [line 26, size 32, align 32, offset 0] [from i5]
-!12 = metadata !{i32 786468, null, null, metadata !"i5", i32 0, i64 32, i64 32, i64 0, i32 0, i32 7} ; [ DW_TAG_base_type ]  [line 0, size 32, align 32, offset 0, enc DW_ATE_unsigned]
-!13 = metadata !{i32 786454, metadata !1, null, metadata !"i6", i32 5, i64 0, i64 0, i64 0, i32 0, metadata !14} ; [ DW_TAG_typedef ]  [line 5, size 0, align 0, offset 0] [from i7]
-!14 = metadata !{i32 786454, metadata !1, null, metadata !"i7", i32 2, i64 0, i64 0, i64 0, i32 0, metadata !15} ; [ DW_TAG_typedef ]  [line 2, size 0, align 0, offset 0] [from i8]
-!15 = metadata !{i32 786468, null, null, metadata !"i8", i32 0, i64 64, i64 64, i64 0, i32 0, i32 7} ; [ DW_TAG_base_type ]  [line 0, size 64, align 64, offset 0, enc DW_ATE_unsigned]
-!16 = metadata !{}
-!21 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"i13", metadata !"i13", metadata !"", i32 42, metadata !22, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, void ()* @init, null, null, metadata !24, i32 43} ; [ DW_TAG_subprogram ] [line 42]  [scope 43]
-!22 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !34, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
-!23 = metadata !{null}
-!24 = metadata !{metadata !25}
-!25 = metadata !{i32 786688, metadata !21, metadata !"i14", metadata !5, i32 45, metadata !27, i32 0, i32 0} ; [ DW_TAG_auto_variable ]  [line 45]
-!27 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !28} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from i14]
-!28 = metadata !{i32 786451, metadata !1, null, metadata !"i14", i32 16, i64 32, i64 32, i32 0, i32 0, null, metadata !29, i32 0, null, null, null} ; [ DW_TAG_structure_type ] [i14] [line 16, size 32, align 32, offset 0] [def] [from ]
-!29 = metadata !{metadata !30}
-!30 = metadata !{i32 786445, metadata !1, metadata !28, metadata !"i16", i32 17, i64 32, i64 32, i64 0, i32 0, metadata !31} ; [ DW_TAG_member ]  [line 17, size 32, align 32, offset 0] [from i17]
-!31 = metadata !{i32 786454, metadata !1, null, metadata !"i17", i32 7, i64 0, i64 0, i64 0, i32 0, metadata !32} ; [ DW_TAG_typedef ]  [line 7, size 0, align 0, offset 0] [from int]
-!32 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]  [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
-!33 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"i18", metadata !"i18", metadata !"", i32 54, metadata !22, i1 true, i1 true, i32 0, i32 0, null, i32 256, i1 true, void ()* @bar, null, null, metadata !34, i32 55} ; [ DW_TAG_subprogram ] [line 54]   [scope 55]
-!34 = metadata !{null}
-!47 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"i29", metadata !"i29", metadata !"", i32 53, metadata !22, i1 true, i1 true, i32 0, i32 0, null, i32 256, i1 true, void ()* @baz, null, null, metadata !2, i32 53} ; [ DW_TAG_subprogram ] [line 53]
-!48 = metadata !{metadata !49}
-!49 = metadata !{i32 786484, i32 0, metadata !21, metadata !"i30", metadata !"i30", metadata !"", metadata !5, i32 44, metadata !50, i32 1, i32 1, null, null}
-!50 = metadata !{i32 786454, metadata !1, null, metadata !"i31", i32 6, i64 0, i64 0, i64 0, i32 0, metadata !32} ; [ DW_TAG_typedef ]  [line 6, size 0, align 0, offset 0] [from int]
-!52 = metadata !{i64 0}
-!55 = metadata !{%struct.i3* null}
-!72 = metadata !{%struct.i24* null}
-!73 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}
+!7 = metadata !{null}
+!8 = metadata !{i32 2, metadata !"Dwarf Version", i32 2}
+!9 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}
+!10 = metadata !{metadata !"clang version 3.5.0 "}
+!11 = metadata !{i32 786688, metadata !4, metadata !"p", metadata !5, i32 8, metadata !12, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [p] [line 8]
+!12 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !13} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from i14]
+!13 = metadata !{i32 786454, metadata !1, null, metadata !"i14", i32 3, i64 0, i64 0, i64 0, i32 0, metadata !14} ; [ DW_TAG_typedef ] [i14] [line 3, size 0, align 0, offset 0] [from ]
+!14 = metadata !{i32 786451, metadata !1, null, metadata !"", i32 1, i64 64, i64 64, i32 0, i32 0, null, metadata !15, i32 0, null, null, null} ; [ DW_TAG_structure_type ] [line 1, size 64, align 64, offset 0] [def] [from ]
+!15 = metadata !{metadata !16}
+!16 = metadata !{i32 786445, metadata !1, metadata !14, metadata !"i", i32 2, i64 64, i64 64, i64 0, i32 0, metadata !17} ; [ DW_TAG_member ] [i] [line 2, size 64, align 64, offset 0] [from long int]
+!17 = metadata !{i32 786468, null, null, metadata !"long int", i32 0, i64 64, i64 64, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [long int] [line 0, size 64, align 64, offset 0, enc DW_ATE_signed]
+!18 = metadata !{i32 8, i32 0, metadata !4, null} ; [ DW_TAG_imported_declaration ]
+!19 = metadata !{i32 9, i32 0, metadata !4, null}
+!20 = metadata !{i32 10, i32 0, metadata !4, null}
+!21 = metadata !{i32 11, i32 0, metadata !4, null}
+!22 = metadata !{i32 12, i32 0, metadata !4, null}