Use absolute label for DW_AT_stmt_list if a target does not prefer offset here.
This patch was developed on top of original patch by Artur Pietrek.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112678 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/llvm/MC/MCAsmInfo.h b/include/llvm/MC/MCAsmInfo.h
index 8516de0..176221e 100644
--- a/include/llvm/MC/MCAsmInfo.h
+++ b/include/llvm/MC/MCAsmInfo.h
@@ -255,6 +255,10 @@
/// DwarfSectionOffsetDirective - Special section offset directive.
const char* DwarfSectionOffsetDirective; // Defaults to NULL
+ /// DwarfUsesAbsoluteLabelForStmtList - True if DW_AT_stmt_list needs
+ /// absolute label instead of offset.
+ bool DwarfUsesAbsoluteLabelForStmtList; // Defaults to true;
+
//===--- CBE Asm Translation Table -----------------------------------===//
const char *const *AsmTransCBE; // Defaults to empty
@@ -417,6 +421,9 @@
const char *getDwarfSectionOffsetDirective() const {
return DwarfSectionOffsetDirective;
}
+ bool doesDwarfUsesAbsoluteLabelForStmtList() const {
+ return DwarfUsesAbsoluteLabelForStmtList;
+ }
const char *const *getAsmCBE() const {
return AsmTransCBE;
}
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index eeae8a3..6edce5a 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -1815,7 +1815,11 @@
addUInt(Die, dwarf::DW_AT_entry_pc, dwarf::DW_FORM_addr, 0);
// DW_AT_stmt_list is a offset of line number information for this
// compile unit in debug_line section.
- addUInt(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4, 0);
+ if (Asm->MAI->doesDwarfUsesAbsoluteLabelForStmtList())
+ addLabel(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_addr,
+ Asm->GetTempSymbol("section_line"));
+ else
+ 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/lib/MC/MCAsmInfo.cpp b/lib/MC/MCAsmInfo.cpp
index a275be2..b859825 100644
--- a/lib/MC/MCAsmInfo.cpp
+++ b/lib/MC/MCAsmInfo.cpp
@@ -68,6 +68,7 @@
ExceptionsType = ExceptionHandling::None;
DwarfRequiresFrameSection = true;
DwarfUsesInlineInfoSection = false;
+ DwarfUsesAbsoluteLabelForStmtList = true;
DwarfSectionOffsetDirective = 0;
HasMicrosoftFastStdCallMangling = false;
diff --git a/lib/MC/MCAsmInfoDarwin.cpp b/lib/MC/MCAsmInfoDarwin.cpp
index 0bd3b2d..4856def 100644
--- a/lib/MC/MCAsmInfoDarwin.cpp
+++ b/lib/MC/MCAsmInfoDarwin.cpp
@@ -44,5 +44,7 @@
HasDotTypeDotSizeDirective = false;
HasNoDeadStrip = true;
+
+ DwarfUsesAbsoluteLabelForStmtList = false;
}