[llvm] r174785 - Dwarf: do not use line_table_start in at_stmt_list since we do not always emit
Manman Ren
mren at apple.com
Fri Feb 8 16:41:44 PST 2013
Author: mren
Date: Fri Feb 8 18:41:44 2013
New Revision: 174785
URL: http://llvm.org/viewvc/llvm-project?rev=174785&view=rev
Log:
Dwarf: do not use line_table_start in at_stmt_list since we do not always emit
line table entries in assembly.
Modified:
llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
llvm/trunk/test/DebugInfo/X86/stmt-list.ll
Modified: llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp?rev=174785&r1=174784&r2=174785&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp (original)
+++ llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp Fri Feb 8 18:41:44 2013
@@ -670,9 +670,12 @@ CompileUnit *DwarfDebug::constructCompil
// DW_AT_stmt_list is a offset of line number information for this
// compile unit in debug_line section.
+ // The line table entries are not always emitted in assembly, so it
+ // is not okay to use line_table_start here.
if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
NewCU->addLabel(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4,
- LineTableStartSym);
+ NewCU->getUniqueID() == 0 ?
+ Asm->GetTempSymbol("section_line") : LineTableStartSym);
else if (NewCU->getUniqueID() == 0)
NewCU->addUInt(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4, 0);
else
Modified: llvm/trunk/test/DebugInfo/X86/stmt-list.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/X86/stmt-list.ll?rev=174785&r1=174784&r2=174785&view=diff
==============================================================================
--- llvm/trunk/test/DebugInfo/X86/stmt-list.ll (original)
+++ llvm/trunk/test/DebugInfo/X86/stmt-list.ll Fri Feb 8 18:41:44 2013
@@ -3,7 +3,7 @@
; CHECK: .section .debug_line,"", at progbits
; CHECK-NEXT: .Lsection_line:
-; CHECK: .long .Lline_table_start0 # DW_AT_stmt_list
+; CHECK: .long .Lsection_line # DW_AT_stmt_list
define void @f() {
entry:
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