Use DW_AT_entry_pc instead of DW_AT_low_pc/DW_AT_high_pc pair. This simplifies debug...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102394 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index c31aec1..3ce0711 100644 (file)
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -1734,9 +1734,9 @@ void DwarfDebug::constructCompileUnit(MDNode *N) {
   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, TextSectionSym);
-  addLabel(Die, dwarf::DW_AT_high_pc, dwarf::DW_FORM_addr,
-           Asm->GetTempSymbol("text_end"));
+  // Use DW_AT_entry_pc instead of DW_AT_low_pc/DW_AT_high_pc pair. This
+  // simplifies debug range entries.
+  addUInt(Die, dwarf::DW_AT_entry_pc, dwarf::DW_FORM_data4, 0);
   // 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.

diff --git a/test/DebugInfo/2010-03-22-CU-HighLow.ll b/test/DebugInfo/2010-04-25-CU-entry_pc.ll
similarity index 94%
rename from test/DebugInfo/2010-03-22-CU-HighLow.ll
rename to test/DebugInfo/2010-04-25-CU-entry_pc.ll
index 42c25e4..de099b6 100644 (file)
--- a/test/DebugInfo/2010-03-22-CU-HighLow.ll
+++ b/test/DebugInfo/2010-04-25-CU-entry_pc.ll
@@ -1,4 +1,4 @@
-; RUN: llc < %s | grep low_pc | count 2
+; RUN: llc < %s | grep entry_pc | count 2
 @i = global i32 1                                 ; <i32*> [#uses=0]
 
 !llvm.dbg.gv = !{!0}