Drop support for an old version of ld64 (from darwin 9).

llvm-svn: 220310

4 files changed, 0 insertions, 17 deletions

diff --git a/llvm/lib/MC/MCAsmInfo.cpp b/llvm/lib/MC/MCAsmInfo.cpp
index 7574edbcbe8..2fb558f1f3e 100644
--- a/llvm/lib/MC/MCAsmInfo.cpp
+++ b/llvm/lib/MC/MCAsmInfo.cpp
@@ -32,7 +32,6 @@ MCAsmInfo::MCAsmInfo() {
   HasMachoZeroFillDirective = false;
   HasMachoTBSSDirective = false;
   HasStaticCtorDtorReferenceInStaticMode = false;
-  LinkerRequiresNonEmptyDwarfLines = false;
   MaxInstLength = 4;
   MinInstAlignment = 1;
   DollarIsPC = false;
diff --git a/llvm/lib/MC/MCAsmInfoDarwin.cpp b/llvm/lib/MC/MCAsmInfoDarwin.cpp
index 96fe216d0d6..66a138b90c6 100644
--- a/llvm/lib/MC/MCAsmInfoDarwin.cpp
+++ b/llvm/lib/MC/MCAsmInfoDarwin.cpp
@@ -42,9 +42,6 @@ MCAsmInfoDarwin::MCAsmInfoDarwin() {
   HasMachoTBSSDirective = true; // Uses .tbss
   HasStaticCtorDtorReferenceInStaticMode = true;
 
-  // FIXME: Darwin 10 and newer don't need this.
-  LinkerRequiresNonEmptyDwarfLines = true;
-
   // FIXME: Change this once MC is the system assembler.
   HasAggressiveSymbolFolding = false;
 
diff --git a/llvm/lib/MC/MCDwarf.cpp b/llvm/lib/MC/MCDwarf.cpp
index 9993588cfab..220747d88df 100644
--- a/llvm/lib/MC/MCDwarf.cpp
+++ b/llvm/lib/MC/MCDwarf.cpp
@@ -344,18 +344,6 @@ void MCDwarfLineTable::EmitCU(MCObjectStreamer *MCOS) const {
   for (const auto &LineSec : MCLineSections.getMCLineEntries())
     EmitDwarfLineTable(MCOS, LineSec.first, LineSec.second);
 
-  if (MCOS->getContext().getAsmInfo()->getLinkerRequiresNonEmptyDwarfLines() &&
-      MCLineSections.getMCLineEntries().empty()) {
-    // The darwin9 linker has a bug (see PR8715). For for 32-bit architectures
-    // it requires:
-    // total_length >= prologue_length + 10
-    // We are 4 bytes short, since we have total_length = 51 and
-    // prologue_length = 45
-
-    // The regular end_sequence should be sufficient.
-    MCDwarfLineAddr::Emit(MCOS, INT64_MAX, 0);
-  }
-
   // This is the end of the section, so set the value of the symbol at the end
   // of this section (that was used in a previous expression).
   MCOS->EmitLabel(LineEndSym);
diff --git a/llvm/lib/Target/R600/MCTargetDesc/AMDGPUMCAsmInfo.cpp b/llvm/lib/Target/R600/MCTargetDesc/AMDGPUMCAsmInfo.cpp
index fa268e6cb32..93b9e90bd53 100644
--- a/llvm/lib/Target/R600/MCTargetDesc/AMDGPUMCAsmInfo.cpp
+++ b/llvm/lib/Target/R600/MCTargetDesc/AMDGPUMCAsmInfo.cpp
@@ -15,7 +15,6 @@ AMDGPUMCAsmInfo::AMDGPUMCAsmInfo(StringRef &TT) : MCAsmInfoELF() {
   HasSingleParameterDotFile = false;
   //===------------------------------------------------------------------===//
   HasSubsectionsViaSymbols = true;
-  LinkerRequiresNonEmptyDwarfLines = true;
   MaxInstLength = 16;
   SeparatorString = "\n";
   CommentString = ";";