Use variable's context to identify respective DbgScope.

Use light weight DebugInfo object directly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62269 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/AsmPrinter/DwarfWriter.cpp

@@ -1212,7 +1212,7 @@ public:
 class DbgScope {
 private:
   DbgScope *Parent;                   // Parent to this scope.
-  DIDescriptor *Desc;                 // Debug info descriptor for scope.
+  DIDescriptor Desc;                 // Debug info descriptor for scope.
                                       // Either subprogram or block.
   unsigned StartLabelID;              // Label ID of the beginning of scope.
   unsigned EndLabelID;                // Label ID of the end of scope.
@@ -1220,7 +1220,7 @@ private:
   SmallVector<DbgVariable *, 8> Variables;// Variables declared in scope.
   
 public:
-  DbgScope(DbgScope *P, DIDescriptor *D)
+  DbgScope(DbgScope *P, DIDescriptor D)
   : Parent(P), Desc(D), StartLabelID(0), EndLabelID(0), Scopes(), Variables()
   {}
   ~DbgScope() {
@@ -1230,7 +1230,7 @@ public:
   
   // Accessors.
   DbgScope *getParent()        const { return Parent; }
-  DIDescriptor *getDesc()       const { return Desc; }
+  DIDescriptor getDesc()       const { return Desc; }
   unsigned getStartLabelID()     const { return StartLabelID; }
   unsigned getEndLabelID()       const { return EndLabelID; }
   SmallVector<DbgScope *, 4> &getScopes() { return Scopes; }
@@ -1307,7 +1307,7 @@ private:
   ///
   bool shouldEmit;
 
-  // RootScope - Top level scope for the current function.
+  // RootDbgScope - Top level scope for the current function.
   //
   DbgScope *RootDbgScope;
   
@@ -2009,13 +2009,14 @@ private:
     if (!Slot) {
       // FIXME - breaks down when the context is an inlined function.
       DIDescriptor ParentDesc;
-      DIDescriptor *DB = new DIDescriptor(V);
+      DIDescriptor Desc(V);
-      if (DIBlock *Block = dyn_cast<DIBlock>(DB)) {
+      if (Desc.getTag() == dwarf::DW_TAG_lexical_block) {
-        ParentDesc = Block->getContext();
+        DIBlock Block(V);
+        ParentDesc = Block.getContext();
       }
       DbgScope *Parent = ParentDesc.isNull() ? 
         NULL : getOrCreateScope(ParentDesc.getGV());
-      Slot = new DbgScope(Parent, DB);
+      Slot = new DbgScope(Parent, Desc);
       if (Parent) {
         Parent->AddScope(Slot);
       } else if (RootDbgScope) {
@@ -2091,10 +2092,12 @@ private:
   void ConstructRootDbgScope(DbgScope *RootScope) {
     // Exit if there is no root scope.
     if (!RootScope) return;
-    if (RootScope->getDesc()->isNull()) return;
+    DIDescriptor Desc = RootScope->getDesc();
+    if (Desc.isNull())
+      return;
 
     // Get the subprogram debug information entry.
-    DISubprogram SPD(RootScope->getDesc()->getGV());
+    DISubprogram SPD(Desc.getGV());
 
     // Get the compile unit context.
     CompileUnit *Unit = FindCompileUnit(SPD.getCompileUnit());
@@ -3123,7 +3126,18 @@ public:
   /// RecordVariable - Indicate the declaration of  a local variable.
   ///
   void RecordVariable(GlobalVariable *GV, unsigned FrameIndex) {
-    DbgScope *Scope = getOrCreateScope(GV);
+    DIDescriptor Desc(GV);
+    DbgScope *Scope = NULL;
+    if (Desc.getTag() == DW_TAG_variable) {
+      // GV is a global variable.
+      DIGlobalVariable DG(GV);
+      Scope = getOrCreateScope(DG.getContext().getGV());
+    } else {
+      // or GV is a local variable.
+      DIVariable DV(GV);
+      Scope = getOrCreateScope(DV.getContext().getGV());
+    }
+    assert (Scope && "Unable to find variable' scope");
     DIVariable *VD = new DIVariable(GV);
     DbgVariable *DV = new DbgVariable(VD, FrameIndex);
     Scope->AddVariable(DV);

test/DebugInfo/2009-01-15-RecordVariableCrash.ll

@@ -0,0 +1,355 @@
+; RUN: llvm-as < %s | llc -f -o /dev/null
+	%llvm.dbg.anchor.type = type { i32, i32 }
+	%llvm.dbg.basictype.type = type { i32, { }*, i8*, { }*, i32, i64, i64, i64, i32, i32, i8*, i8* }
+	%llvm.dbg.compile_unit.type = type { i32, { }*, i32, i8*, i8*, i8* }
+	%llvm.dbg.derivedtype.type = type { i32, { }*, i8*, { }*, i32, i64, i64, i64, i32, { }*, i8*, i8* }
+	%llvm.dbg.subprogram.type = type { i32, { }*, { }*, i8*, i8*, i8*, { }*, i32, { }*, i1, i1, i8*, i8* }
+	%llvm.dbg.variable.type = type { i32, { }*, i8*, { }*, i32, { }*, i8*, i8* }
+	%struct._RuneCharClass = type { [14 x i8], i32 }
+	%struct._RuneEntry = type { i32, i32, i32, i32* }
+	%struct._RuneLocale = type { [8 x i8], [32 x i8], i32 (i8*, i32, i8**)*, i32 (i32, i8*, i32, i8**)*, i32, [256 x i32], [256 x i32], [256 x i32], %struct._RuneRange, %struct._RuneRange, %struct._RuneRange, i8*, i32, i32, %struct._RuneCharClass* }
+	%struct._RuneRange = type { i32, %struct._RuneEntry* }
+@llvm.dbg.compile_units = linkonce constant %llvm.dbg.anchor.type { i32 458752, i32 17 }, section "llvm.metadata"		; <%llvm.dbg.anchor.type*> [#uses=1]
+@.str = internal constant [4 x i8] c"x.c\00", section "llvm.metadata"		; <[4 x i8]*> [#uses=1]
+@.str1 = internal constant [5 x i8] c"/tmp\00", section "llvm.metadata"		; <[5 x i8]*> [#uses=1]
+@.str2 = internal constant [57 x i8] c"4.2.1 (Based on Apple Inc. build 5628) (LLVM build 9999)\00", section "llvm.metadata"		; <[57 x i8]*> [#uses=1]
+@llvm.dbg.compile_unit = internal constant %llvm.dbg.compile_unit.type { i32 458769, { }* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.compile_units to { }*), i32 1, i8* getelementptr ([4 x i8]* @.str, i32 0, i32 0), i8* getelementptr ([5 x i8]* @.str1, i32 0, i32 0), i8* getelementptr ([57 x i8]* @.str2, i32 0, i32 0) }, section "llvm.metadata"		; <%llvm.dbg.compile_unit.type*> [#uses=1]
+@.str3 = internal constant [4 x i8] c"int\00", section "llvm.metadata"		; <[4 x i8]*> [#uses=1]
+@llvm.dbg.basictype = internal constant %llvm.dbg.basictype.type { i32 458788, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i8* getelementptr ([4 x i8]* @.str3, i32 0, i32 0), { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i32 0, i64 32, i64 32, i64 0, i32 0, i32 5, i8* null, i8* null }, section "llvm.metadata"		; <%llvm.dbg.basictype.type*> [#uses=1]
+@llvm.dbg.subprograms = linkonce constant %llvm.dbg.anchor.type { i32 458752, i32 46 }, section "llvm.metadata"		; <%llvm.dbg.anchor.type*> [#uses=1]
+@.str4 = internal constant [5 x i8] c"main\00", section "llvm.metadata"		; <[5 x i8]*> [#uses=1]
+@llvm.dbg.subprogram = internal constant %llvm.dbg.subprogram.type { i32 458798, { }* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.subprograms to { }*), { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i8* getelementptr ([5 x i8]* @.str4, i32 0, i32 0), i8* getelementptr ([5 x i8]* @.str4, i32 0, i32 0), i8* null, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i32 21, { }* bitcast (%llvm.dbg.basictype.type* @llvm.dbg.basictype to { }*), i1 false, i1 true, i8* getelementptr ([4 x i8]* @.str, i32 0, i32 0), i8* getelementptr ([5 x i8]* @.str1, i32 0, i32 0) }, section "llvm.metadata"		; <%llvm.dbg.subprogram.type*> [#uses=1]
+@.str5 = internal constant [2 x i8] c"i\00", section "llvm.metadata"		; <[2 x i8]*> [#uses=1]
+@llvm.dbg.variable = internal constant %llvm.dbg.variable.type { i32 459008, { }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram to { }*), i8* getelementptr ([2 x i8]* @.str5, i32 0, i32 0), { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i32 22, { }* bitcast (%llvm.dbg.basictype.type* @llvm.dbg.basictype to { }*), i8* getelementptr ([4 x i8]* @.str, i32 0, i32 0), i8* getelementptr ([5 x i8]* @.str1, i32 0, i32 0) }, section "llvm.metadata"		; <%llvm.dbg.variable.type*> [#uses=1]
+@.str6 = internal constant [8 x i8] c"islower\00", section "llvm.metadata"		; <[8 x i8]*> [#uses=1]
+@.str7 = internal constant [8 x i8] c"ctype.h\00", section "llvm.metadata"		; <[8 x i8]*> [#uses=1]
+@.str8 = internal constant [13 x i8] c"/usr/include\00", section "llvm.metadata"		; <[13 x i8]*> [#uses=1]
+@llvm.dbg.subprogram9 = internal constant %llvm.dbg.subprogram.type { i32 458798, { }* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.subprograms to { }*), { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i8* getelementptr ([8 x i8]* @.str6, i32 0, i32 0), i8* getelementptr ([8 x i8]* @.str6, i32 0, i32 0), i8* null, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i32 267, { }* bitcast (%llvm.dbg.basictype.type* @llvm.dbg.basictype to { }*), i1 true, i1 true, i8* getelementptr ([8 x i8]* @.str7, i32 0, i32 0), i8* getelementptr ([13 x i8]* @.str8, i32 0, i32 0) }, section "llvm.metadata"		; <%llvm.dbg.subprogram.type*> [#uses=1]
+@.str10 = internal constant [3 x i8] c"_c\00", section "llvm.metadata"		; <[3 x i8]*> [#uses=1]
+@llvm.dbg.variable11 = internal constant %llvm.dbg.variable.type { i32 459009, { }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram9 to { }*), i8* getelementptr ([3 x i8]* @.str10, i32 0, i32 0), { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i32 266, { }* bitcast (%llvm.dbg.basictype.type* @llvm.dbg.basictype to { }*), i8* getelementptr ([8 x i8]* @.str7, i32 0, i32 0), i8* getelementptr ([13 x i8]* @.str8, i32 0, i32 0) }, section "llvm.metadata"		; <%llvm.dbg.variable.type*> [#uses=1]
+@.str12 = internal constant [9 x i8] c"__istype\00", section "llvm.metadata"		; <[9 x i8]*> [#uses=1]
+@llvm.dbg.subprogram13 = internal constant %llvm.dbg.subprogram.type { i32 458798, { }* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.subprograms to { }*), { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i8* getelementptr ([9 x i8]* @.str12, i32 0, i32 0), i8* getelementptr ([9 x i8]* @.str12, i32 0, i32 0), i8* null, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i32 171, { }* bitcast (%llvm.dbg.basictype.type* @llvm.dbg.basictype to { }*), i1 true, i1 true, i8* getelementptr ([8 x i8]* @.str7, i32 0, i32 0), i8* getelementptr ([13 x i8]* @.str8, i32 0, i32 0) }, section "llvm.metadata"		; <%llvm.dbg.subprogram.type*> [#uses=1]
+@.str14 = internal constant [19 x i8] c"__darwin_ct_rune_t\00", section "llvm.metadata"		; <[19 x i8]*> [#uses=1]
+@.str15 = internal constant [9 x i8] c"_types.h\00", section "llvm.metadata"		; <[9 x i8]*> [#uses=1]
+@.str16 = internal constant [18 x i8] c"/usr/include/i386\00", section "llvm.metadata"		; <[18 x i8]*> [#uses=1]
+@llvm.dbg.derivedtype = internal constant %llvm.dbg.derivedtype.type { i32 458774, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i8* getelementptr ([19 x i8]* @.str14, i32 0, i32 0), { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i32 70, i64 0, i64 0, i64 0, i32 0, { }* bitcast (%llvm.dbg.basictype.type* @llvm.dbg.basictype to { }*), i8* getelementptr ([9 x i8]* @.str15, i32 0, i32 0), i8* getelementptr ([18 x i8]* @.str16, i32 0, i32 0) }, section "llvm.metadata"		; <%llvm.dbg.derivedtype.type*> [#uses=1]
+@llvm.dbg.variable17 = internal constant %llvm.dbg.variable.type { i32 459009, { }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram13 to { }*), i8* getelementptr ([3 x i8]* @.str10, i32 0, i32 0), { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i32 170, { }* bitcast (%llvm.dbg.derivedtype.type* @llvm.dbg.derivedtype to { }*), i8* getelementptr ([8 x i8]* @.str7, i32 0, i32 0), i8* getelementptr ([13 x i8]* @.str8, i32 0, i32 0) }, section "llvm.metadata"		; <%llvm.dbg.variable.type*> [#uses=1]
+@.str18 = internal constant [18 x i8] c"long unsigned int\00", section "llvm.metadata"		; <[18 x i8]*> [#uses=1]
+@llvm.dbg.basictype19 = internal constant %llvm.dbg.basictype.type { i32 458788, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i8* getelementptr ([18 x i8]* @.str18, i32 0, i32 0), { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i32 0, i64 32, i64 32, i64 0, i32 0, i32 7, i8* null, i8* null }, section "llvm.metadata"		; <%llvm.dbg.basictype.type*> [#uses=1]
+@.str20 = internal constant [3 x i8] c"_f\00", section "llvm.metadata"		; <[3 x i8]*> [#uses=1]
+@llvm.dbg.variable21 = internal constant %llvm.dbg.variable.type { i32 459009, { }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram13 to { }*), i8* getelementptr ([3 x i8]* @.str20, i32 0, i32 0), { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i32 170, { }* bitcast (%llvm.dbg.basictype.type* @llvm.dbg.basictype19 to { }*), i8* getelementptr ([8 x i8]* @.str7, i32 0, i32 0), i8* getelementptr ([13 x i8]* @.str8, i32 0, i32 0) }, section "llvm.metadata"		; <%llvm.dbg.variable.type*> [#uses=1]
+@_DefaultRuneLocale = external global %struct._RuneLocale		; <%struct._RuneLocale*> [#uses=1]
+@.str22 = internal constant [8 x i8] c"isascii\00", section "llvm.metadata"		; <[8 x i8]*> [#uses=1]
+@llvm.dbg.subprogram23 = internal constant %llvm.dbg.subprogram.type { i32 458798, { }* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.subprograms to { }*), { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i8* getelementptr ([8 x i8]* @.str22, i32 0, i32 0), i8* getelementptr ([8 x i8]* @.str22, i32 0, i32 0), i8* null, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i32 153, { }* bitcast (%llvm.dbg.basictype.type* @llvm.dbg.basictype to { }*), i1 true, i1 true, i8* getelementptr ([8 x i8]* @.str7, i32 0, i32 0), i8* getelementptr ([13 x i8]* @.str8, i32 0, i32 0) }, section "llvm.metadata"		; <%llvm.dbg.subprogram.type*> [#uses=1]
+@llvm.dbg.variable24 = internal constant %llvm.dbg.variable.type { i32 459009, { }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram23 to { }*), i8* getelementptr ([3 x i8]* @.str10, i32 0, i32 0), { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i32 152, { }* bitcast (%llvm.dbg.basictype.type* @llvm.dbg.basictype to { }*), i8* getelementptr ([8 x i8]* @.str7, i32 0, i32 0), i8* getelementptr ([13 x i8]* @.str8, i32 0, i32 0) }, section "llvm.metadata"		; <%llvm.dbg.variable.type*> [#uses=1]
+@.str25 = internal constant [8 x i8] c"toupper\00", section "llvm.metadata"		; <[8 x i8]*> [#uses=1]
+@llvm.dbg.subprogram26 = internal constant %llvm.dbg.subprogram.type { i32 458798, { }* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.subprograms to { }*), { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i8* getelementptr ([8 x i8]* @.str25, i32 0, i32 0), i8* getelementptr ([8 x i8]* @.str25, i32 0, i32 0), i8* null, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i32 316, { }* bitcast (%llvm.dbg.basictype.type* @llvm.dbg.basictype to { }*), i1 true, i1 true, i8* getelementptr ([8 x i8]* @.str7, i32 0, i32 0), i8* getelementptr ([13 x i8]* @.str8, i32 0, i32 0) }, section "llvm.metadata"		; <%llvm.dbg.subprogram.type*> [#uses=1]
+@llvm.dbg.variable27 = internal constant %llvm.dbg.variable.type { i32 459009, { }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram26 to { }*), i8* getelementptr ([3 x i8]* @.str10, i32 0, i32 0), { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i32 315, { }* bitcast (%llvm.dbg.basictype.type* @llvm.dbg.basictype to { }*), i8* getelementptr ([8 x i8]* @.str7, i32 0, i32 0), i8* getelementptr ([13 x i8]* @.str8, i32 0, i32 0) }, section "llvm.metadata"		; <%llvm.dbg.variable.type*> [#uses=1]
+
+define i32 @main() nounwind {
+entry:
+	%retval = alloca i32		; <i32*> [#uses=1]
+	%i = alloca i32		; <i32*> [#uses=16]
+	%iftmp.5 = alloca i32		; <i32*> [#uses=3]
+	%"alloca point" = bitcast i32 0 to i32		; <i32> [#uses=0]
+	call void @llvm.dbg.func.start({ }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram to { }*))
+	%0 = bitcast i32* %i to { }*		; <{ }*> [#uses=1]
+	call void @llvm.dbg.declare({ }* %0, { }* bitcast (%llvm.dbg.variable.type* @llvm.dbg.variable to { }*))
+	call void @llvm.dbg.stoppoint(i32 23, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	store i32 0, i32* %i, align 4
+	br label %bb13
+		; No predecessors!
+	call void @llvm.dbg.stoppoint(i32 23, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb
+
+bb:		; preds = %bb13, %1
+	call void @llvm.dbg.stoppoint(i32 24, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%2 = load i32* %i, align 4		; <i32> [#uses=1]
+	%3 = call i32 @islower(i32 %2) nounwind		; <i32> [#uses=1]
+	%4 = icmp eq i32 %3, 0		; <i1> [#uses=1]
+	br i1 %4, label %bb3, label %bb1
+		; No predecessors!
+	call void @llvm.dbg.stoppoint(i32 24, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb1
+
+bb1:		; preds = %5, %bb
+	call void @llvm.dbg.stoppoint(i32 24, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%6 = load i32* %i, align 4		; <i32> [#uses=1]
+	%7 = icmp sle i32 %6, 96		; <i1> [#uses=1]
+	br i1 %7, label %bb11, label %bb2
+		; No predecessors!
+	call void @llvm.dbg.stoppoint(i32 24, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb2
+
+bb2:		; preds = %8, %bb1
+	call void @llvm.dbg.stoppoint(i32 24, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%9 = load i32* %i, align 4		; <i32> [#uses=1]
+	%10 = icmp sgt i32 %9, 122		; <i1> [#uses=1]
+	br i1 %10, label %bb11, label %bb3
+		; No predecessors!
+	call void @llvm.dbg.stoppoint(i32 24, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb3
+
+bb3:		; preds = %11, %bb2, %bb
+	call void @llvm.dbg.stoppoint(i32 24, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%12 = load i32* %i, align 4		; <i32> [#uses=1]
+	%13 = call i32 @islower(i32 %12) nounwind		; <i32> [#uses=1]
+	%14 = icmp ne i32 %13, 0		; <i1> [#uses=1]
+	br i1 %14, label %bb6, label %bb4
+		; No predecessors!
+	call void @llvm.dbg.stoppoint(i32 24, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb4
+
+bb4:		; preds = %15, %bb3
+	call void @llvm.dbg.stoppoint(i32 24, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%16 = load i32* %i, align 4		; <i32> [#uses=1]
+	%17 = icmp sle i32 %16, 96		; <i1> [#uses=1]
+	br i1 %17, label %bb6, label %bb5
+		; No predecessors!
+	call void @llvm.dbg.stoppoint(i32 24, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb5
+
+bb5:		; preds = %18, %bb4
+	call void @llvm.dbg.stoppoint(i32 24, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%19 = load i32* %i, align 4		; <i32> [#uses=1]
+	%20 = icmp sle i32 %19, 122		; <i1> [#uses=1]
+	br i1 %20, label %bb11, label %bb6
+		; No predecessors!
+	call void @llvm.dbg.stoppoint(i32 24, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb6
+
+bb6:		; preds = %21, %bb5, %bb4, %bb3
+	call void @llvm.dbg.stoppoint(i32 24, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%22 = load i32* %i, align 4		; <i32> [#uses=1]
+	%23 = call i32 @toupper(i32 %22) nounwind		; <i32> [#uses=1]
+	%24 = load i32* %i, align 4		; <i32> [#uses=1]
+	%25 = icmp sle i32 %24, 96		; <i1> [#uses=1]
+	br i1 %25, label %bb9, label %bb7
+		; No predecessors!
+	call void @llvm.dbg.stoppoint(i32 24, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb7
+
+bb7:		; preds = %26, %bb6
+	call void @llvm.dbg.stoppoint(i32 24, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%27 = load i32* %i, align 4		; <i32> [#uses=1]
+	%28 = icmp sgt i32 %27, 122		; <i1> [#uses=1]
+	br i1 %28, label %bb9, label %bb8
+		; No predecessors!
+	call void @llvm.dbg.stoppoint(i32 24, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb8
+
+bb8:		; preds = %29, %bb7
+	call void @llvm.dbg.stoppoint(i32 24, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%30 = load i32* %i, align 4		; <i32> [#uses=1]
+	%31 = sub i32 %30, 32		; <i32> [#uses=1]
+	store i32 %31, i32* %iftmp.5, align 4
+	br label %bb10
+		; No predecessors!
+	call void @llvm.dbg.stoppoint(i32 24, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb9
+
+bb9:		; preds = %32, %bb7, %bb6
+	call void @llvm.dbg.stoppoint(i32 24, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%33 = load i32* %i, align 4		; <i32> [#uses=1]
+	store i32 %33, i32* %iftmp.5, align 4
+	br label %bb10
+
+bb10:		; preds = %bb9, %bb8
+	call void @llvm.dbg.stoppoint(i32 24, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%34 = load i32* %iftmp.5, align 4		; <i32> [#uses=1]
+	%35 = icmp ne i32 %23, %34		; <i1> [#uses=1]
+	br i1 %35, label %bb11, label %bb12
+		; No predecessors!
+	call void @llvm.dbg.stoppoint(i32 24, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb11
+
+bb11:		; preds = %36, %bb10, %bb5, %bb2, %bb1
+	call void @llvm.dbg.stoppoint(i32 26, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	call void @exit(i32 2) noreturn nounwind
+	unreachable
+		; No predecessors!
+	call void @llvm.dbg.stoppoint(i32 26, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb12
+
+bb12:		; preds = %37, %bb10
+	call void @llvm.dbg.stoppoint(i32 23, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%38 = load i32* %i, align 4		; <i32> [#uses=1]
+	%39 = add i32 %38, 1		; <i32> [#uses=1]
+	store i32 %39, i32* %i, align 4
+	br label %bb13
+
+bb13:		; preds = %bb12, %entry
+	call void @llvm.dbg.stoppoint(i32 23, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%40 = load i32* %i, align 4		; <i32> [#uses=1]
+	%41 = icmp sle i32 %40, 255		; <i1> [#uses=1]
+	br i1 %41, label %bb, label %bb14
+		; No predecessors!
+	call void @llvm.dbg.stoppoint(i32 23, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb14
+
+bb14:		; preds = %42, %bb13
+	call void @llvm.dbg.stoppoint(i32 27, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	call void @exit(i32 0) noreturn nounwind
+	unreachable
+
+return:		; No predecessors!
+	%retval15 = load i32* %retval		; <i32> [#uses=1]
+	call void @llvm.dbg.stoppoint(i32 27, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	call void @llvm.dbg.region.end({ }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram to { }*))
+	ret i32 %retval15
+}
+
+declare void @llvm.dbg.func.start({ }*) nounwind
+
+declare void @llvm.dbg.declare({ }*, { }*) nounwind
+
+declare void @llvm.dbg.stoppoint(i32, i32, { }*) nounwind
+
+define internal i32 @islower(i32 %_c) nounwind {
+entry:
+	%_c_addr = alloca i32		; <i32*> [#uses=3]
+	%retval = alloca i32		; <i32*> [#uses=2]
+	%0 = alloca i32		; <i32*> [#uses=2]
+	%"alloca point" = bitcast i32 0 to i32		; <i32> [#uses=0]
+	call void @llvm.dbg.func.start({ }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram9 to { }*))
+	%1 = bitcast i32* %_c_addr to { }*		; <{ }*> [#uses=1]
+	call void @llvm.dbg.declare({ }* %1, { }* bitcast (%llvm.dbg.variable.type* @llvm.dbg.variable11 to { }*))
+	store i32 %_c, i32* %_c_addr
+	call void @llvm.dbg.stoppoint(i32 268, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%2 = load i32* %_c_addr, align 4		; <i32> [#uses=1]
+	%3 = call i32 @__istype(i32 %2, i32 4096) nounwind		; <i32> [#uses=1]
+	store i32 %3, i32* %0, align 4
+	%4 = load i32* %0, align 4		; <i32> [#uses=1]
+	store i32 %4, i32* %retval, align 4
+	br label %return
+
+return:		; preds = %entry
+	%retval1 = load i32* %retval		; <i32> [#uses=1]
+	call void @llvm.dbg.stoppoint(i32 268, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	call void @llvm.dbg.region.end({ }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram9 to { }*))
+	ret i32 %retval1
+}
+
+define internal i32 @toupper(i32 %_c) nounwind {
+entry:
+	%_c_addr = alloca i32		; <i32*> [#uses=3]
+	%retval = alloca i32		; <i32*> [#uses=2]
+	%0 = alloca i32		; <i32*> [#uses=2]
+	%"alloca point" = bitcast i32 0 to i32		; <i32> [#uses=0]
+	call void @llvm.dbg.func.start({ }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram26 to { }*))
+	%1 = bitcast i32* %_c_addr to { }*		; <{ }*> [#uses=1]
+	call void @llvm.dbg.declare({ }* %1, { }* bitcast (%llvm.dbg.variable.type* @llvm.dbg.variable27 to { }*))
+	store i32 %_c, i32* %_c_addr
+	call void @llvm.dbg.stoppoint(i32 317, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%2 = load i32* %_c_addr, align 4		; <i32> [#uses=1]
+	%3 = call i32 @__toupper(i32 %2) nounwind		; <i32> [#uses=1]
+	store i32 %3, i32* %0, align 4
+	%4 = load i32* %0, align 4		; <i32> [#uses=1]
+	store i32 %4, i32* %retval, align 4
+	br label %return
+
+return:		; preds = %entry
+	%retval1 = load i32* %retval		; <i32> [#uses=1]
+	call void @llvm.dbg.stoppoint(i32 317, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	call void @llvm.dbg.region.end({ }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram26 to { }*))
+	ret i32 %retval1
+}
+
+declare void @exit(i32) noreturn nounwind
+
+declare void @llvm.dbg.region.end({ }*) nounwind
+
+define internal i32 @__istype(i32 %_c, i32 %_f) nounwind {
+entry:
+	%_c_addr = alloca i32		; <i32*> [#uses=5]
+	%_f_addr = alloca i32		; <i32*> [#uses=4]
+	%retval = alloca i32		; <i32*> [#uses=2]
+	%iftmp.0 = alloca i32		; <i32*> [#uses=3]
+	%0 = alloca i32		; <i32*> [#uses=2]
+	%"alloca point" = bitcast i32 0 to i32		; <i32> [#uses=0]
+	call void @llvm.dbg.func.start({ }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram13 to { }*))
+	%1 = bitcast i32* %_c_addr to { }*		; <{ }*> [#uses=1]
+	call void @llvm.dbg.declare({ }* %1, { }* bitcast (%llvm.dbg.variable.type* @llvm.dbg.variable17 to { }*))
+	store i32 %_c, i32* %_c_addr
+	%2 = bitcast i32* %_f_addr to { }*		; <{ }*> [#uses=1]
+	call void @llvm.dbg.declare({ }* %2, { }* bitcast (%llvm.dbg.variable.type* @llvm.dbg.variable21 to { }*))
+	store i32 %_f, i32* %_f_addr
+	call void @llvm.dbg.stoppoint(i32 175, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%3 = load i32* %_c_addr, align 4		; <i32> [#uses=1]
+	%4 = call i32 @isascii(i32 %3) nounwind		; <i32> [#uses=1]
+	%5 = icmp ne i32 %4, 0		; <i1> [#uses=1]
+	br i1 %5, label %bb, label %bb1
+		; No predecessors!
+	call void @llvm.dbg.stoppoint(i32 175, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb
+
+bb:		; preds = %6, %entry
+	call void @llvm.dbg.stoppoint(i32 175, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%7 = load i32* %_c_addr, align 4		; <i32> [#uses=1]
+	%8 = getelementptr [256 x i32]* getelementptr (%struct._RuneLocale* @_DefaultRuneLocale, i32 0, i32 5), i32 0, i32 %7		; <i32*> [#uses=1]
+	%9 = load i32* %8, align 4		; <i32> [#uses=1]
+	%10 = load i32* %_f_addr, align 4		; <i32> [#uses=1]
+	%11 = and i32 %9, %10		; <i32> [#uses=1]
+	%12 = icmp ne i32 %11, 0		; <i1> [#uses=1]
+	%13 = zext i1 %12 to i32		; <i32> [#uses=1]
+	store i32 %13, i32* %iftmp.0, align 4
+	br label %bb2
+		; No predecessors!
+	call void @llvm.dbg.stoppoint(i32 175, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	br label %bb1
+
+bb1:		; preds = %14, %entry
+	call void @llvm.dbg.stoppoint(i32 175, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%15 = load i32* %_c_addr, align 4		; <i32> [#uses=1]
+	%16 = load i32* %_f_addr, align 4		; <i32> [#uses=1]
+	%17 = call i32 @__maskrune(i32 %15, i32 %16) nounwind		; <i32> [#uses=1]
+	%18 = icmp ne i32 %17, 0		; <i1> [#uses=1]
+	%19 = zext i1 %18 to i32		; <i32> [#uses=1]
+	store i32 %19, i32* %iftmp.0, align 4
+	br label %bb2
+
+bb2:		; preds = %bb1, %bb
+	call void @llvm.dbg.stoppoint(i32 175, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%20 = load i32* %iftmp.0, align 4		; <i32> [#uses=1]
+	store i32 %20, i32* %0, align 4
+	%21 = load i32* %0, align 4		; <i32> [#uses=1]
+	store i32 %21, i32* %retval, align 4
+	br label %return
+
+return:		; preds = %bb2
+	%retval3 = load i32* %retval		; <i32> [#uses=1]
+	call void @llvm.dbg.stoppoint(i32 175, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	call void @llvm.dbg.region.end({ }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram13 to { }*))
+	ret i32 %retval3
+}
+
+define internal i32 @isascii(i32 %_c) nounwind {
+entry:
+	%_c_addr = alloca i32		; <i32*> [#uses=3]
+	%retval = alloca i32		; <i32*> [#uses=2]
+	%0 = alloca i32		; <i32*> [#uses=2]
+	%"alloca point" = bitcast i32 0 to i32		; <i32> [#uses=0]
+	call void @llvm.dbg.func.start({ }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram23 to { }*))
+	%1 = bitcast i32* %_c_addr to { }*		; <{ }*> [#uses=1]
+	call void @llvm.dbg.declare({ }* %1, { }* bitcast (%llvm.dbg.variable.type* @llvm.dbg.variable24 to { }*))
+	store i32 %_c, i32* %_c_addr
+	call void @llvm.dbg.stoppoint(i32 154, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	%2 = load i32* %_c_addr, align 4		; <i32> [#uses=1]
+	%3 = and i32 %2, -128		; <i32> [#uses=1]
+	%4 = icmp eq i32 %3, 0		; <i1> [#uses=1]
+	%5 = zext i1 %4 to i32		; <i32> [#uses=1]
+	store i32 %5, i32* %0, align 4
+	%6 = load i32* %0, align 4		; <i32> [#uses=1]
+	store i32 %6, i32* %retval, align 4
+	br label %return
+
+return:		; preds = %entry
+	%retval1 = load i32* %retval		; <i32> [#uses=1]
+	call void @llvm.dbg.stoppoint(i32 154, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*))
+	call void @llvm.dbg.region.end({ }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram23 to { }*))
+	ret i32 %retval1
+}
+
+declare i32 @__maskrune(i32, i32)
+
+declare i32 @__toupper(i32)