X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=docs%2FSourceLevelDebugging.html;h=f1e1cd0285d88d2d11cf6cdd2529aa5772656b79;hb=3d793962becf3a345cfff96202f3c6c27a1fb5d4;hp=93d65ccaae680646b878aa37a937a668022dadf9;hpb=cf493b89bed4b1c41e6fe4dc48d29b5bdf70a0f8;p=oota-llvm.git

diff --git a/docs/SourceLevelDebugging.html b/docs/SourceLevelDebugging.html
index 93d65ccaae6..f1e1cd0285d 100644
--- a/docs/SourceLevelDebugging.html
+++ b/docs/SourceLevelDebugging.html
@@ -25,6 +25,7 @@
     <li><a href="#debug_info_descriptors">Debug information descriptors</a>
     <ul>
       <li><a href="#format_compile_units">Compile unit descriptors</a></li>
+      <li><a href="#format_files">File descriptors</a></li>
       <li><a href="#format_global_variables">Global variable descriptors</a></li>
       <li><a href="#format_subprograms">Subprogram descriptors</a></li>
       <li><a href="#format_blocks">Block descriptors</a></li>
@@ -38,6 +39,7 @@
     <li><a href="#format_common_intrinsics">Debugger intrinsic functions</a>
       <ul>
       <li><a href="#format_common_declare">llvm.dbg.declare</a></li>
+      <li><a href="#format_common_value">llvm.dbg.value</a></li>
     </ul></li>
   </ol></li>
   <li><a href="#format_common_lifetime">Object lifetimes and scoping</a></li>
@@ -76,7 +78,7 @@ height="369">
    that the LLVM debug information</a> takes, which is useful for those
    interested in creating front-ends or dealing directly with the information.
    Further, this document provides specific examples of what debug information
-   for C/C++.</p>
+   for C/C++ looks like.</p>
 
 </div>
 
@@ -142,7 +144,7 @@ height="369">
    an LLVM user a relationship between generated code and the original program
    source code.</p>
 
-<p>Currently, debug information is consumed by the DwarfWriter to produce dwarf
+<p>Currently, debug information is consumed by DwarfDebug to produce dwarf
    information used by the gdb debugger.  Other targets could use the same
    information to produce stabs or other debug forms.</p>
 
@@ -235,7 +237,7 @@ height="369">
 <p>LLVM debugging information has been carefully designed to make it possible
    for the optimizer to optimize the program and debugging information without
    necessarily having to know anything about debugging information.  In
-   particular, te use of metadadta avoids duplicated dubgging information from
+   particular, the use of metadata avoids duplicated debugging information from
    the beginning, and the global dead code elimination pass automatically 
    deletes debugging information for a function if it decides to delete the 
    function. </p>
@@ -254,7 +256,7 @@ height="369">
 <p>To provide basic functionality, the LLVM debugger does have to make some
    assumptions about the source-level language being debugged, though it keeps
    these to a minimum.  The only common features that the LLVM debugger assumes
-   exist are <a href="#format_compile_units">source files</a>,
+   exist are <a href="#format_files">source files</a>,
    and <a href="#format_global_variables">program objects</a>.  These abstract
    objects are used by a debugger to form stack traces, show information about
    local variables, etc.</p>
@@ -287,27 +289,26 @@ height="369">
    0x1000.)</p>
 
 <p>The fields of debug descriptors used internally by LLVM 
-   are restricted to only the simple data types <tt>int</tt>, <tt>uint</tt>,
-   <tt>bool</tt>, <tt>float</tt>, <tt>double</tt>, <tt>mdstring</tt> and
-   <tt>mdnode</tt>. </p>
+   are restricted to only the simple data types <tt>i32</tt>, <tt>i1</tt>,
+   <tt>float</tt>, <tt>double</tt>, <tt>mdstring</tt> and <tt>mdnode</tt>. </p>
 
 <div class="doc_code">
 <pre>
 !1 = metadata !{
-  uint,   ;; A tag
+  i32,   ;; A tag
   ...
 }
 </pre>
 </div>
 
 <p><a name="LLVMDebugVersion">The first field of a descriptor is always an
-   <tt>uint</tt> containing a tag value identifying the content of the
+   <tt>i32</tt> containing a tag value identifying the content of the
    descriptor.  The remaining fields are specific to the descriptor.  The values
    of tags are loosely bound to the tag values of DWARF information entries.
    However, that does not restrict the use of the information supplied to DWARF
    targets.  To facilitate versioning of debug information, the tag is augmented
-   with the current debug version (LLVMDebugVersion = 7 << 16 or 0x70000 or
-   458752.)</a></p>
+   with the current debug version (LLVMDebugVersion = 8 &lt;&lt; 16 or 0x80000 or
+   524288.)</a></p>
 
 <p>The details of the various descriptors follow.</p>  
 
@@ -345,18 +346,36 @@ height="369">
    that produced it.</p>
 
 <p>Compile unit descriptors provide the root context for objects declared in a
-   specific source file.  Global variables and top level functions would be
-   defined using this context. Compile unit descriptors also provide context
-   for source line correspondence.</p>
+   specific compilation unit. File descriptors are defined using this context.</p>
 
-<p>Each input file is encoded as a separate compile unit in LLVM debugging
-   information output. However, many target specific tool chains prefer to
-   encode only one compile unit in an object file. In this situation, the LLVM
-   code generator will include debugging information entities in the compile
-   unit that is marked as main compile unit. The code generator accepts maximum
-   one main compile unit per module. If a module does not contain any main
-   compile unit then the code generator will emit multiple compile units in the
-   output object file.</p>
+</div>
+
+<!-- ======================================================================= -->
+<div class="doc_subsubsection">
+  <a name="format_files">File descriptors</a>
+</div>
+
+<div class="doc_text">
+
+<div class="doc_code">
+<pre>
+!0 = metadata !{
+  i32,       ;; Tag = 41 + <a href="#LLVMDebugVersion">LLVMDebugVersion</a> 
+             ;; (DW_TAG_file_type)
+  metadata,  ;; Source file name
+  metadata,  ;; Source file directory (includes trailing slash)
+  metadata   ;; Reference to compile unit where defined
+}
+</pre>
+</div>
+
+<p>These descriptors contain information for a file. Global variables and top
+   level functions would be defined using this context.k File descriptors also
+   provide context for source line correspondence. </p>
+
+<p>Each input file is encoded as a separate file descriptor in LLVM debugging
+   information output. Each file descriptor would be defined using a 
+   compile unit. </p>
 
 </div>
 
@@ -377,12 +396,12 @@ height="369">
   metadata, ;; Name
   metadata, ;; Display name (fully qualified C++ name)
   metadata, ;; MIPS linkage name (for C++)
-  metadata, ;; Reference to compile unit where defined
+  metadata, ;; Reference to file where defined
   i32,      ;; Line number where defined
   metadata, ;; Reference to type descriptor
   i1,       ;; True if the global is local to compile unit (static)
   i1,       ;; True if the global is defined in the compile unit (not extern)
-  {  }*     ;; Reference to the global variable
+  {}*       ;; Reference to the global variable
 }
 </pre>
 </div>
@@ -409,11 +428,18 @@ provide details such as name, type and where the variable is defined.</p>
   metadata, ;; Name
   metadata, ;; Display name (fully qualified C++ name)
   metadata, ;; MIPS linkage name (for C++)
-  metadata, ;; Reference to compile unit where defined
+  metadata, ;; Reference to file where defined
   i32,      ;; Line number where defined
   metadata, ;; Reference to type descriptor
   i1,       ;; True if the global is local to compile unit (static)
   i1        ;; True if the global is defined in the compile unit (not extern)
+  i32       ;; Virtuality, e.g. dwarf::DW_VIRTUALITY__virtual
+  i32       ;; Index into a virtual function
+  metadata, ;; indicates which base type contains the vtable pointer for the 
+            ;; derived class
+  i1        ;; isArtificial
+  i1        ;; isOptimized
+  Function *;; Pointer to LLVM function
 }
 </pre>
 </div>
@@ -434,15 +460,19 @@ provide details such as name, type and where the variable is defined.</p>
 <div class="doc_code">
 <pre>
 !3 = metadata !{
-  i32,     ;; Tag = 13 + <a href="#LLVMDebugVersion">LLVMDebugVersion</a> (DW_TAG_lexical_block)
-  metadata ;; Reference to context descriptor
+  i32,     ;; Tag = 11 + <a href="#LLVMDebugVersion">LLVMDebugVersion</a> (DW_TAG_lexical_block)
+  metadata,;; Reference to context descriptor
+  i32,     ;; Line number
+  i32,     ;; Column number
+  metadata,;; Reference to source file
+  i32      ;; Unique ID to identify blocks from a template function
 }
 </pre>
 </div>
 
 <p>These descriptors provide debug information about nested blocks within a
-   subprogram.  The array of member descriptors is used to define local
-   variables and deeper nested blocks.</p>
+   subprogram. The line number and column numbers are used to dinstinguish
+   two lexical blocks at same depth. </p>
 
 </div>
 
@@ -460,7 +490,7 @@ provide details such as name, type and where the variable is defined.</p>
             ;; (DW_TAG_base_type)
   metadata, ;; Reference to context (typically a compile unit)
   metadata, ;; Name (may be "" for anonymous types)
-  metadata, ;; Reference to compile unit where defined (may be NULL)
+  metadata, ;; Reference to file where defined (may be NULL)
   i32,      ;; Line number where defined (may be 0)
   i64,      ;; Size in bits
   i64,      ;; Alignment in bits
@@ -511,11 +541,11 @@ DW_ATE_unsigned_char = 8
   i32,      ;; Tag (see below)
   metadata, ;; Reference to context
   metadata, ;; Name (may be "" for anonymous types)
-  metadata, ;; Reference to compile unit where defined (may be NULL)
+  metadata, ;; Reference to file where defined (may be NULL)
   i32,      ;; Line number where defined (may be 0)
-  i32,      ;; Size in bits
-  i32,      ;; Alignment in bits
-  i32,      ;; Offset in bits
+  i64,      ;; Size in bits
+  i64,      ;; Alignment in bits
+  i64,      ;; Offset in bits
   metadata  ;; Reference to type derived from
 }
 </pre>
@@ -560,9 +590,8 @@ DW_TAG_restrict_type    = 55
    the bit offset if embedded in a <a href="#format_composite_type">composite
    type</a>.</p>
 
-<p>Note that the <tt>void *</tt> type is expressed as a
-   <tt>llvm.dbg.derivedtype.type</tt> with tag of <tt>DW_TAG_pointer_type</tt>
-   and <tt>NULL</tt> derived type.</p>
+<p>Note that the <tt>void *</tt> type is expressed as a type derived from NULL.
+</p>
 
 </div>
 
@@ -579,7 +608,7 @@ DW_TAG_restrict_type    = 55
   i32,      ;; Tag (see below)
   metadata, ;; Reference to context
   metadata, ;; Name (may be "" for anonymous types)
-  metadata, ;; Reference to compile unit where defined (may be NULL)
+  metadata, ;; Reference to file where defined (may be NULL)
   i32,      ;; Line number where defined (may be 0)
   i64,      ;; Size in bits
   i64,      ;; Alignment in bits
@@ -661,7 +690,7 @@ DW_TAG_inheritance      = 28
 
 <div class="doc_code">
 <pre>
-%<a href="#format_subrange">llvm.dbg.subrange.type</a> = type {
+!42 = metadata !{
   i32,    ;; Tag = 33 + <a href="#LLVMDebugVersion">LLVMDebugVersion</a> (DW_TAG_subrange_type)
   i64,    ;; Low value
   i64     ;; High value
@@ -714,8 +743,9 @@ DW_TAG_inheritance      = 28
   i32,      ;; Tag (see below)
   metadata, ;; Context
   metadata, ;; Name
-  metadata, ;; Reference to compile unit where defined
-  i32,      ;; Line number where defined
+  metadata, ;; Reference to file where defined
+  i32,      ;; 24 bit - Line number where defined
+            ;; 8 bit - Argument number. 1 indicates 1st argument.
   metadata  ;; Type descriptor
 }
 </pre>
@@ -763,15 +793,29 @@ DW_TAG_return_variable = 258
 
 <div class="doc_text">
 <pre>
-  void %<a href="#format_common_declare">llvm.dbg.declare</a>( { } *, metadata )
+  void %<a href="#format_common_declare">llvm.dbg.declare</a>(metadata, metadata)
 </pre>
 
 <p>This intrinsic provides information about a local element (ex. variable.) The
-   first argument is the alloca for the variable, cast to a <tt>{ }*</tt>. The
-   second argument is
-   the <tt>%<a href="#format_variables">llvm.dbg.variable</a></tt> containing
-   the description of the variable. </p>
+   first argument is metadata holding alloca for the variable.</tt>. The
+   second argument is metadata containing description of the variable. </p>
+</div>
 
+<!-- ======================================================================= -->
+<div class="doc_subsubsection">
+  <a name="format_common_value">llvm.dbg.value</a>
+</div>
+
+<div class="doc_text">
+<pre>
+  void %<a href="#format_common_value">llvm.dbg.value</a>(metadata, i64, metadata)
+</pre>
+
+<p>This intrinsic provides information when a user source variable is set to a
+   new value.  The first argument is the new value (wrapped as metadata).  The
+   second argument is the offset in the user source variable where the new value
+   is written.  The third argument is metadata containing description of the
+   user source variable. </p>
 </div>
 
 <!-- ======================================================================= -->
@@ -790,8 +834,8 @@ DW_TAG_return_variable = 258
    rules.</p>
 
 <p>In order to handle this, the LLVM debug format uses the metadata attached to
-   llvm instructions to encode line nuber and scoping information. Consider the
-   following C fragment, for example:</p>
+   llvm instructions to encode line number and scoping information. Consider
+   the following C fragment, for example:</p>
 
 <div class="doc_code">
 <pre>
@@ -813,28 +857,28 @@ DW_TAG_return_variable = 258
 <pre>
 define void @foo() nounwind ssp {
 entry:
-  %X = alloca i32, align 4                        ; <i32*> [#uses=4]
-  %Y = alloca i32, align 4                        ; <i32*> [#uses=4]
-  %Z = alloca i32, align 4                        ; <i32*> [#uses=3]
-  %0 = bitcast i32* %X to { }*                    ; <{ }*> [#uses=1]
-  call void @llvm.dbg.declare({ }* %0, metadata !0), !dbg !7
+  %X = alloca i32, align 4                        ; &lt;i32*&gt; [#uses=4]
+  %Y = alloca i32, align 4                        ; &lt;i32*&gt; [#uses=4]
+  %Z = alloca i32, align 4                        ; &lt;i32*&gt; [#uses=3]
+  %0 = bitcast i32* %X to {}*                     ; &lt;{}*&gt; [#uses=1]
+  call void @llvm.dbg.declare(metadata !{i32 * %X}, metadata !0), !dbg !7
   store i32 21, i32* %X, !dbg !8
-  %1 = bitcast i32* %Y to { }*                    ; <{ }*> [#uses=1]
-  call void @llvm.dbg.declare({ }* %1, metadata !9), !dbg !10
+  %1 = bitcast i32* %Y to {}*                     ; &lt;{}*&gt; [#uses=1]
+  call void @llvm.dbg.declare(metadata !{i32 * %Y}, metadata !9), !dbg !10
   store i32 22, i32* %Y, !dbg !11
-  %2 = bitcast i32* %Z to { }*                    ; <{ }*> [#uses=1]
-  call void @llvm.dbg.declare({ }* %2, metadata !12), !dbg !14
+  %2 = bitcast i32* %Z to {}*                     ; &lt;{}*&gt; [#uses=1]
+  call void @llvm.dbg.declare(metadata !{i32 * %Z}, metadata !12), !dbg !14
   store i32 23, i32* %Z, !dbg !15
-  %tmp = load i32* %X, !dbg !16                   ; <i32> [#uses=1]
-  %tmp1 = load i32* %Y, !dbg !16                  ; <i32> [#uses=1]
-  %add = add nsw i32 %tmp, %tmp1, !dbg !16        ; <i32> [#uses=1]
+  %tmp = load i32* %X, !dbg !16                   ; &lt;i32&gt; [#uses=1]
+  %tmp1 = load i32* %Y, !dbg !16                  ; &lt;i32&gt; [#uses=1]
+  %add = add nsw i32 %tmp, %tmp1, !dbg !16        ; &lt;i32&gt; [#uses=1]
   store i32 %add, i32* %Z, !dbg !16
-  %tmp2 = load i32* %Y, !dbg !17                  ; <i32> [#uses=1]
+  %tmp2 = load i32* %Y, !dbg !17                  ; &lt;i32&gt; [#uses=1]
   store i32 %tmp2, i32* %X, !dbg !17
   ret void, !dbg !18
 }
 
-declare void @llvm.dbg.declare({ }*, metadata) nounwind readnone
+declare void @llvm.dbg.declare(metadata, metadata) nounwind readnone
 
 !0 = metadata !{i32 459008, metadata !1, metadata !"X", 
                 metadata !3, i32 2, metadata !6}; [ DW_TAG_auto_variable ]
@@ -875,8 +919,8 @@ declare void @llvm.dbg.declare({ }*, metadata) nounwind readnone
    function.</p>
 
 <div class="doc_code">
-<pre> 
-call void @llvm.dbg.declare({ }* %0, metadata !0), !dbg !7   
+<pre>
+call void @llvm.dbg.declare(metadata, metadata !0), !dbg !7   
 </pre>
 </div>
 
@@ -910,8 +954,8 @@ call void @llvm.dbg.declare({ }* %0, metadata !0), !dbg !7
 <p>Now lets take another example.</p>
 
 <div class="doc_code">
-<pre> 
-call void @llvm.dbg.declare({ }* %2, metadata !12), !dbg !14
+<pre>
+call void @llvm.dbg.declare(metadata, metadata !12), !dbg !14
 </pre>
 </div>
 
@@ -928,7 +972,7 @@ call void @llvm.dbg.declare({ }* %2, metadata !12), !dbg !14
 </pre>
 </div>
 
-<p>Here <tt>!14</tt> indicates that <tt>Z</tt> is declaread at line number 5 and
+<p>Here <tt>!14</tt> indicates that <tt>Z</tt> is declared at line number 5 and
    column number 9 inside of lexical scope <tt>!13</tt>. The lexical scope
    itself resides inside of lexical scope <tt>!1</tt> described above.</p>
 
@@ -992,10 +1036,10 @@ int main(int argc, char *argv[]) {
 <pre>
 ...
 ;;
-;; Define the compile unit for the source file "/Users/mine/sources/MySource.cpp".
+;; Define the compile unit for the main source file "/Users/mine/sources/MySource.cpp".
 ;;
-!3 = metadata !{
-  i32 458769,    ;; Tag
+!2 = metadata !{
+  i32 524305,    ;; Tag
   i32 0,         ;; Unused
   i32 4,         ;; Language Id
   metadata !"MySource.cpp", 
@@ -1007,24 +1051,41 @@ int main(int argc, char *argv[]) {
   i32 0}         ;; Runtime version
 
 ;;
-;; Define the compile unit for the header file "/Users/mine/sources/MyHeader.h".
+;; Define the file for the file "/Users/mine/sources/MySource.cpp".
 ;;
 !1 = metadata !{
-  i32 458769,    ;; Tag
-  i32 0,         ;; Unused
-  i32 4,         ;; Language Id
-  metadata !"MyHeader.h", 
+  i32 524329,    ;; Tag
+  metadata !"MySource.cpp", 
   metadata !"/Users/mine/sources", 
-  metadata !"4.2.1 (Based on Apple Inc. build 5649) (LLVM build 00)", 
-  i1 false,      ;; Main Compile Unit
-  i1 false,      ;; Optimized compile unit
-  metadata !"",  ;; Compiler flags
-  i32 0}         ;; Runtime version
+  metadata !2    ;; Compile unit
+}
+
+;;
+;; Define the file for the file "/Users/mine/sources/Myheader.h"
+;;
+!3 = metadata !{
+  i32 524329,    ;; Tag
+  metadata !"Myheader.h"
+  metadata !"/Users/mine/sources", 
+  metadata !2    ;; Compile unit
+}
 
 ...
 </pre>
 </div>
 
+<p>llvm::Instruction provides easy access to metadata attached with an 
+instruction. One can extract line number information encoded in LLVM IR
+using <tt>Instruction::getMetadata()</tt> and 
+<tt>DILocation::getLineNumber()</tt>.
+<pre>
+ if (MDNode *N = I->getMetadata("dbg")) {  // Here I is an LLVM instruction
+   DILocation Loc(N);                      // DILocation is in DebugInfo.h
+   unsigned Line = Loc.getLineNumber();
+   StringRef File = Loc.getFilename();
+   StringRef Dir = Loc.getDirectory();
+ }
+</pre>
 </div>
 
 <!-- ======================================================================= -->
@@ -1061,15 +1122,15 @@ int MyGlobal = 100;
 ;; variable anchor and the global variable itself.
 ;;
 !0 = metadata !{
-  i32 458804,              ;; Tag
+  i32 524340,              ;; Tag
   i32 0,                   ;; Unused
   metadata !1,             ;; Context
   metadata !"MyGlobal",    ;; Name
   metadata !"MyGlobal",    ;; Display Name
   metadata !"MyGlobal",    ;; Linkage Name
-  metadata !1,             ;; Compile Unit
+  metadata !3,             ;; Compile Unit
   i32 1,                   ;; Line Number
-  metadata !2,             ;; Type
+  metadata !4,             ;; Type
   i1 false,                ;; Is a local variable
   i1 true,                 ;; Is this a definition
   i32* @MyGlobal           ;; The global variable
@@ -1079,11 +1140,11 @@ int MyGlobal = 100;
 ;; Define the basic type of 32 bit signed integer.  Note that since int is an
 ;; intrinsic type the source file is NULL and line 0.
 ;;    
-!2 = metadata !{
-  i32 458788,              ;; Tag
+!4 = metadata !{
+  i32 524324,              ;; Tag
   metadata !1,             ;; Context
   metadata !"int",         ;; Name
-  metadata !1,             ;; Compile Unit
+  metadata !1,             ;; File
   i32 0,                   ;; Line number
   i64 32,                  ;; Size in Bits
   i64 32,                  ;; Align in Bits
@@ -1123,16 +1184,16 @@ int main(int argc, char *argv[]) {
 ;; anchor is 46, which is the same as the tag for subprograms
 ;; (46 = DW_TAG_subprogram.)
 ;;
-!0 = metadata !{
-  i32 458798,        ;; Tag
+!6 = metadata !{
+  i32 524334,        ;; Tag
   i32 0,             ;; Unused
   metadata !1,       ;; Context
   metadata !"main",  ;; Name
   metadata !"main",  ;; Display name
   metadata !"main",  ;; Linkage name
-  metadata !1,       ;; Compile unit
+  metadata !1,       ;; File
   i32 1,             ;; Line number
-  metadata !2,       ;; Type
+  metadata !4,       ;; Type
   i1 false,          ;; Is local 
   i1 true            ;; Is definition
 }
@@ -1168,10 +1229,10 @@ define i32 @main(i32 %argc, i8** %argv) {
 <div class="doc_code">
 <pre>
 !2 = metadata !{
-  i32 458788,        ;; Tag
+  i32 524324,        ;; Tag
   metadata !1,       ;; Context
   metadata !"bool",  ;; Name
-  metadata !1,       ;; Compile Unit
+  metadata !1,       ;; File
   i32 0,             ;; Line number
   i64 8,             ;; Size in Bits
   i64 8,             ;; Align in Bits
@@ -1194,10 +1255,10 @@ define i32 @main(i32 %argc, i8** %argv) {
 <div class="doc_code">
 <pre>
 !2 = metadata !{
-  i32 458788,        ;; Tag
+  i32 524324,        ;; Tag
   metadata !1,       ;; Context
   metadata !"char",  ;; Name
-  metadata !1,       ;; Compile Unit
+  metadata !1,       ;; File
   i32 0,             ;; Line number
   i64 8,             ;; Size in Bits
   i64 8,             ;; Align in Bits
@@ -1220,10 +1281,10 @@ define i32 @main(i32 %argc, i8** %argv) {
 <div class="doc_code">
 <pre>
 !2 = metadata !{
-  i32 458788,        ;; Tag
+  i32 524324,        ;; Tag
   metadata !1,       ;; Context
   metadata !"unsigned char", 
-  metadata !1,       ;; Compile Unit
+  metadata !1,       ;; File
   i32 0,             ;; Line number
   i64 8,             ;; Size in Bits
   i64 8,             ;; Align in Bits
@@ -1246,10 +1307,10 @@ define i32 @main(i32 %argc, i8** %argv) {
 <div class="doc_code">
 <pre>
 !2 = metadata !{
-  i32 458788,        ;; Tag
+  i32 524324,        ;; Tag
   metadata !1,       ;; Context
   metadata !"short int",
-  metadata !1,       ;; Compile Unit
+  metadata !1,       ;; File
   i32 0,             ;; Line number
   i64 16,            ;; Size in Bits
   i64 16,            ;; Align in Bits
@@ -1272,10 +1333,10 @@ define i32 @main(i32 %argc, i8** %argv) {
 <div class="doc_code">
 <pre>
 !2 = metadata !{
-  i32 458788,        ;; Tag
+  i32 524324,        ;; Tag
   metadata !1,       ;; Context
   metadata !"short unsigned int",
-  metadata !1,       ;; Compile Unit
+  metadata !1,       ;; File
   i32 0,             ;; Line number
   i64 16,            ;; Size in Bits
   i64 16,            ;; Align in Bits
@@ -1298,10 +1359,10 @@ define i32 @main(i32 %argc, i8** %argv) {
 <div class="doc_code">
 <pre>
 !2 = metadata !{
-  i32 458788,        ;; Tag
+  i32 524324,        ;; Tag
   metadata !1,       ;; Context
   metadata !"int",   ;; Name
-  metadata !1,       ;; Compile Unit
+  metadata !1,       ;; File
   i32 0,             ;; Line number
   i64 32,            ;; Size in Bits
   i64 32,            ;; Align in Bits
@@ -1323,10 +1384,10 @@ define i32 @main(i32 %argc, i8** %argv) {
 <div class="doc_code">
 <pre>
 !2 = metadata !{
-  i32 458788,        ;; Tag
+  i32 524324,        ;; Tag
   metadata !1,       ;; Context
   metadata !"unsigned int",
-  metadata !1,       ;; Compile Unit
+  metadata !1,       ;; File
   i32 0,             ;; Line number
   i64 32,            ;; Size in Bits
   i64 32,            ;; Align in Bits
@@ -1349,10 +1410,10 @@ define i32 @main(i32 %argc, i8** %argv) {
 <div class="doc_code">
 <pre>
 !2 = metadata !{
-  i32 458788,        ;; Tag
+  i32 524324,        ;; Tag
   metadata !1,       ;; Context
   metadata !"long long int",
-  metadata !1,       ;; Compile Unit
+  metadata !1,       ;; File
   i32 0,             ;; Line number
   i64 64,            ;; Size in Bits
   i64 64,            ;; Align in Bits
@@ -1375,10 +1436,10 @@ define i32 @main(i32 %argc, i8** %argv) {
 <div class="doc_code">
 <pre>
 !2 = metadata !{
-  i32 458788,        ;; Tag
+  i32 524324,        ;; Tag
   metadata !1,       ;; Context
   metadata !"long long unsigned int",
-  metadata !1,       ;; Compile Unit
+  metadata !1,       ;; File
   i32 0,             ;; Line number
   i64 64,            ;; Size in Bits
   i64 64,            ;; Align in Bits
@@ -1401,10 +1462,10 @@ define i32 @main(i32 %argc, i8** %argv) {
 <div class="doc_code">
 <pre>
 !2 = metadata !{
-  i32 458788,        ;; Tag
+  i32 524324,        ;; Tag
   metadata !1,       ;; Context
   metadata !"float",
-  metadata !1,       ;; Compile Unit
+  metadata !1,       ;; File
   i32 0,             ;; Line number
   i64 32,            ;; Size in Bits
   i64 32,            ;; Align in Bits
@@ -1427,10 +1488,10 @@ define i32 @main(i32 %argc, i8** %argv) {
 <div class="doc_code">
 <pre>
 !2 = metadata !{
-  i32 458788,        ;; Tag
+  i32 524324,        ;; Tag
   metadata !1,       ;; Context
   metadata !"double",;; Name
-  metadata !1,       ;; Compile Unit
+  metadata !1,       ;; File
   i32 0,             ;; Line number
   i64 64,            ;; Size in Bits
   i64 64,            ;; Align in Bits
@@ -1466,10 +1527,10 @@ typedef const int *IntPtr;
 ;; Define the typedef "IntPtr".
 ;;
 !2 = metadata !{
-  i32 458774,          ;; Tag
+  i32 524310,          ;; Tag
   metadata !1,         ;; Context
   metadata !"IntPtr",  ;; Name
-  metadata !3,         ;; Compile unit
+  metadata !3,         ;; File
   i32 0,               ;; Line number
   i64 0,               ;; Size in bits
   i64 0,               ;; Align in bits
@@ -1482,10 +1543,10 @@ typedef const int *IntPtr;
 ;; Define the pointer type.
 ;;
 !4 = metadata !{
-  i32 458767,          ;; Tag
+  i32 524303,          ;; Tag
   metadata !1,         ;; Context
   metadata !"",        ;; Name
-  metadata !1,         ;; Compile unit
+  metadata !1,         ;; File
   i32 0,               ;; Line number
   i64 64,              ;; Size in bits
   i64 64,              ;; Align in bits
@@ -1497,10 +1558,10 @@ typedef const int *IntPtr;
 ;; Define the const type.
 ;;
 !5 = metadata !{
-  i32 458790,          ;; Tag
+  i32 524326,          ;; Tag
   metadata !1,         ;; Context
   metadata !"",        ;; Name
-  metadata !1,         ;; Compile unit
+  metadata !1,         ;; File
   i32 0,               ;; Line number
   i64 32,              ;; Size in bits
   i64 32,              ;; Align in bits
@@ -1512,10 +1573,10 @@ typedef const int *IntPtr;
 ;; Define the int type.
 ;;
 !6 = metadata !{
-  i32 458788,          ;; Tag
+  i32 524324,          ;; Tag
   metadata !1,         ;; Context
   metadata !"int",     ;; Name
-  metadata !1,         ;; Compile unit
+  metadata !1,         ;; File
   i32 0,               ;; Line number
   i64 32,              ;; Size in bits
   i64 32,              ;; Align in bits
@@ -1555,10 +1616,10 @@ struct Color {
 ;; Define basic type for unsigned int.
 ;;
 !5 = metadata !{
-  i32 458788,        ;; Tag
+  i32 524324,        ;; Tag
   metadata !1,       ;; Context
   metadata !"unsigned int",
-  metadata !1,       ;; Compile Unit
+  metadata !1,       ;; File
   i32 0,             ;; Line number
   i64 32,            ;; Size in Bits
   i64 32,            ;; Align in Bits
@@ -1570,7 +1631,7 @@ struct Color {
 ;; Define composite type for struct Color.
 ;;
 !2 = metadata !{
-  i32 458771,        ;; Tag
+  i32 524307,        ;; Tag
   metadata !1,       ;; Context
   metadata !"Color", ;; Name
   metadata !1,       ;; Compile unit
@@ -1588,10 +1649,10 @@ struct Color {
 ;; Define the Red field.
 ;;
 !4 = metadata !{
-  i32 458765,        ;; Tag
+  i32 524301,        ;; Tag
   metadata !1,       ;; Context
   metadata !"Red",   ;; Name
-  metadata !1,       ;; Compile Unit
+  metadata !1,       ;; File
   i32 2,             ;; Line number
   i64 32,            ;; Size in bits
   i64 32,            ;; Align in bits
@@ -1604,10 +1665,10 @@ struct Color {
 ;; Define the Green field.
 ;;
 !6 = metadata !{
-  i32 458765,        ;; Tag
+  i32 524301,        ;; Tag
   metadata !1,       ;; Context
   metadata !"Green", ;; Name
-  metadata !1,       ;; Compile Unit
+  metadata !1,       ;; File
   i32 3,             ;; Line number
   i64 32,            ;; Size in bits
   i64 32,            ;; Align in bits
@@ -1620,10 +1681,10 @@ struct Color {
 ;; Define the Blue field.
 ;;
 !7 = metadata !{
-  i32 458765,        ;; Tag
+  i32 524301,        ;; Tag
   metadata !1,       ;; Context
   metadata !"Blue",  ;; Name
-  metadata !1,       ;; Compile Unit
+  metadata !1,       ;; File
   i32 4,             ;; Line number
   i64 32,            ;; Size in bits
   i64 32,            ;; Align in bits
@@ -1668,10 +1729,10 @@ enum Trees {
 ;; Define composite type for enum Trees
 ;;
 !2 = metadata !{
-  i32 458756,        ;; Tag
+  i32 524292,        ;; Tag
   metadata !1,       ;; Context
   metadata !"Trees", ;; Name
-  metadata !1,       ;; Compile unit
+  metadata !1,       ;; File
   i32 1,             ;; Line number
   i64 32,            ;; Size in bits
   i64 32,            ;; Align in bits
@@ -1690,17 +1751,17 @@ enum Trees {
 ;;
 ;; Define Spruce enumerator.
 ;;
-!4 = metadata !{i32 458792, metadata !"Spruce", i64 100}
+!4 = metadata !{i32 524328, metadata !"Spruce", i64 100}
 
 ;;
 ;; Define Oak enumerator.
 ;;
-!5 = metadata !{i32 458792, metadata !"Oak", i64 200}
+!5 = metadata !{i32 524328, metadata !"Oak", i64 200}
 
 ;;
 ;; Define Maple enumerator.
 ;;
-!6 = metadata !{i32 458792, metadata !"Maple", i64 300}
+!6 = metadata !{i32 524328, metadata !"Maple", i64 300}
 
 </pre>
 </div>