Emit DW_AT_low_pc and DW_AT_high_pc attributes for TAG_compile_unit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99225 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 83cac7916b4c36f6390ab81b1f9c1db48dc3377c..68402b84c2a8296d9749cd7886ba37341c78bb09 100644 (file)
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -1656,15 +1656,19 @@ void DwarfDebug::constructCompileUnit(MDNode *N) {
   unsigned ID = GetOrCreateSourceID(Dir, FN);
 
   DIE *Die = new DIE(dwarf::DW_TAG_compile_unit);
-  // DW_AT_stmt_list is a offset of line number information for this
-  // compile unit in debug_line section. It is always zero when only one
-  // compile unit is emitted in one object file.
-  addUInt(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4, 0);
   addString(Die, dwarf::DW_AT_producer, dwarf::DW_FORM_string,
             DIUnit.getProducer());
   addUInt(Die, dwarf::DW_AT_language, dwarf::DW_FORM_data1,
           DIUnit.getLanguage());
   addString(Die, dwarf::DW_AT_name, dwarf::DW_FORM_string, FN);
+  addLabel(Die, dwarf::DW_AT_low_pc, dwarf::DW_FORM_addr,
+           getTempLabel("text_begin"));
+  addLabel(Die, dwarf::DW_AT_high_pc, dwarf::DW_FORM_addr,
+           getTempLabel("text_end"));
+  // DW_AT_stmt_list is a offset of line number information for this
+  // compile unit in debug_line section. It is always zero when only one
+  // compile unit is emitted in one object file.
+  addUInt(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4, 0);
 
   if (!Dir.empty())
     addString(Die, dwarf::DW_AT_comp_dir, dwarf::DW_FORM_string, Dir);

diff --git a/test/DebugInfo/2010-03-22-CU-HighLow.ll b/test/DebugInfo/2010-03-22-CU-HighLow.ll
new file mode 100644 (file)
index 0000000..42c25e4
--- /dev/null
+++ b/test/DebugInfo/2010-03-22-CU-HighLow.ll
@@ -0,0 +1,9 @@
+; RUN: llc < %s | grep low_pc | count 2
+@i = global i32 1                                 ; <i32*> [#uses=0]
+
+!llvm.dbg.gv = !{!0}
+
+!0 = metadata !{i32 524340, i32 0, metadata !1, metadata !"i", metadata !"i", metadata !"", metadata !1, i32 1, metadata !3, i1 false, i1 true, i32* @i} ; [ DW_TAG_variable ]
+!1 = metadata !{i32 524329, metadata !"b.c", metadata !"/tmp", metadata !2} ; [ DW_TAG_file_type ]
+!2 = metadata !{i32 524305, i32 0, i32 1, metadata !"b.c", metadata !"/tmp", metadata !"4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", i1 true, i1 false, metadata !"", i32 0} ; [ DW_TAG_compile_unit ]
+!3 = metadata !{i32 524324, metadata !1, metadata !"int", metadata !1, i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]