[llvm] r174479 - Attempt to recover gdb bot after r174445.

[Manman Ren]

Author: mren
Date: Tue Feb  5 18:59:41 2013
New Revision: 174479

URL: http://llvm.org/viewvc/llvm-project?rev=174479&view=rev
Log:
Attempt to recover gdb bot after r174445.

Failure: undefined symbol 'Lline_table_start0'.
Root-cause: we use a symbol subtraction to calculate at_stmt_list, but
the line table entries are not dumped in the assembly.
Fix: use zero instead of a symbol subtraction for Compile Unit 0.

Modified:
    llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
    llvm/trunk/test/CodeGen/ARM/2011-01-19-MergedGlobalDbg.ll
    llvm/trunk/test/CodeGen/ARM/2011-08-02-MergedGlobalDbg.ll
    llvm/trunk/test/CodeGen/X86/2011-01-24-DbgValue-Before-Use.ll
    llvm/trunk/test/CodeGen/X86/dbg-value-location.ll
    llvm/trunk/test/DebugInfo/X86/stringpool.ll

Modified: llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp?rev=174479&r1=174478&r2=174479&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp (original)
+++ llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp Tue Feb  5 18:59:41 2013
@@ -674,6 +674,8 @@ CompileUnit *DwarfDebug::constructCompil
   if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
     NewCU->addLabel(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4,
                     LineTableStartSym);
+  else if (NewCU->getUniqueID() == 0)
+    NewCU->addUInt(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4, 0);
   else
     NewCU->addDelta(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4,
                     LineTableStartSym, Asm->GetTempSymbol("section_line"));

Modified: llvm/trunk/test/CodeGen/ARM/2011-01-19-MergedGlobalDbg.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/ARM/2011-01-19-MergedGlobalDbg.ll?rev=174479&r1=174478&r2=174479&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/ARM/2011-01-19-MergedGlobalDbg.ll (original)
+++ llvm/trunk/test/CodeGen/ARM/2011-01-19-MergedGlobalDbg.ll Tue Feb  5 18:59:41 2013
@@ -17,7 +17,7 @@ target triple = "thumbv7-apple-darwin10"
 ; DW_OP_constu
 ; offset
 
-;CHECK: .long Lset7
+;CHECK: .long Lset6
 ;CHECK-NEXT:        @ DW_AT_type
 ;CHECK-NEXT:        @ DW_AT_decl_file
 ;CHECK-NEXT:        @ DW_AT_decl_line

Modified: llvm/trunk/test/CodeGen/ARM/2011-08-02-MergedGlobalDbg.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/ARM/2011-08-02-MergedGlobalDbg.ll?rev=174479&r1=174478&r2=174479&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/ARM/2011-08-02-MergedGlobalDbg.ll (original)
+++ llvm/trunk/test/CodeGen/ARM/2011-08-02-MergedGlobalDbg.ll Tue Feb  5 18:59:41 2013
@@ -8,7 +8,7 @@
 ; DW_OP_constu
 ; offset
 
-;CHECK: .long Lset34
+;CHECK: .long Lset33
 ;CHECK-NEXT:        @ DW_AT_type
 ;CHECK-NEXT:        @ DW_AT_decl_file
 ;CHECK-NEXT:        @ DW_AT_decl_line

Modified: llvm/trunk/test/CodeGen/X86/2011-01-24-DbgValue-Before-Use.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/2011-01-24-DbgValue-Before-Use.ll?rev=174479&r1=174478&r2=174479&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/2011-01-24-DbgValue-Before-Use.ll (original)
+++ llvm/trunk/test/CodeGen/X86/2011-01-24-DbgValue-Before-Use.ll Tue Feb  5 18:59:41 2013
@@ -4,7 +4,7 @@ target datalayout = "e-p:64:64:64-i1:8:8
 target triple = "x86_64-apple-darwin10.0.0"
 
 ; Check debug info for variable z_s
-;CHECK: .long Lset14
+;CHECK: .long Lset13
 ;CHECK-NEXT:  ## DW_AT_decl_file
 ;CHECK-NEXT:  ## DW_AT_decl_line
 ;CHECK-NEXT:  ## DW_AT_type

Modified: llvm/trunk/test/CodeGen/X86/dbg-value-location.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/dbg-value-location.ll?rev=174479&r1=174478&r2=174479&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/dbg-value-location.ll (original)
+++ llvm/trunk/test/CodeGen/X86/dbg-value-location.ll Tue Feb  5 18:59:41 2013
@@ -4,7 +4,7 @@ target datalayout = "e-p:64:64:64-i1:8:8
 target triple = "x86_64-apple-darwin10.0.0"
 ;Radar 8950491
 
-;CHECK: .long Lset6
+;CHECK: .long Lset5
 ;CHECK-NEXT:        ## DW_AT_decl_file
 ;CHECK-NEXT:        ## DW_AT_decl_line
 ;CHECK-NEXT:        ## DW_AT_type

Modified: llvm/trunk/test/DebugInfo/X86/stringpool.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/X86/stringpool.ll?rev=174479&r1=174478&r2=174479&view=diff
==============================================================================
--- llvm/trunk/test/DebugInfo/X86/stringpool.ll (original)
+++ llvm/trunk/test/DebugInfo/X86/stringpool.ll Tue Feb  5 18:59:41 2013
@@ -23,8 +23,8 @@
 ; LINUX-NEXT: .quad   yyyy
 
 ; Verify that we refer to 'yyyy' without a relocation.
-; DARWIN: Lset6 = Linfo_string3-Linfo_string          ## DW_AT_name
-; DARWIN-NEXT:        .long   Lset6
+; DARWIN: Lset5 = Linfo_string3-Linfo_string          ## DW_AT_name
+; DARWIN-NEXT:        .long   Lset5
 ; DARWIN-NEXT:        .long   39                      ## DW_AT_type
 ; DARWIN-NEXT:        .byte   1                       ## DW_AT_external
 ; DARWIN-NEXT:        .byte   1                       ## DW_AT_decl_file