Remove DwarfUnit::LabelRange since it's unused.

Seems at some point the intent was to emit fission ranges_base as unique
per CU but the code today emits ranges_base as the start of the ranges
section for all CUs being compiled and all the ranges_base relative
addresses are relative to that. So removing this dead code and leaving
the status quo until there's a reason to change it (perhaps something's
faster if it has distinct ranges for each CU).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207464 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index fcb8ee1fb70c6c6a5a3c789ce09dc6873c708e45..01012071fe1a3dcbe44e6ce5cdff684bc1490fd9 100644 (file)
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -2355,9 +2355,6 @@ void DwarfDebug::emitDebugRanges() {
   for (const auto &I : CUMap) {
     DwarfCompileUnit *TheCU = I.second;
 
-    // Emit a symbol so we can find the beginning of our ranges.
-    Asm->OutStreamer.EmitLabel(TheCU->getLabelRange());
-
     // Iterate over the misc ranges for the compile units in the module.
     for (const RangeSpanList &List : TheCU->getRangeLists()) {
       // Emit our symbol so we can find the beginning of the range.

diff --git a/lib/CodeGen/AsmPrinter/DwarfUnit.cpp b/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
index 93dd67452bbc4d6b7245ef3c987ed24b4e47f6c2..4210a55459de0b99eb2dbb0018511797bd9035a8 100644 (file)
--- a/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
@@ -2092,5 +2092,4 @@ void DwarfTypeUnit::initSection(const MCSection *Section) {
       Asm->GetTempSymbol(Section->getLabelBeginName(), getUniqueID());
   this->LabelEnd =
       Asm->GetTempSymbol(Section->getLabelEndName(), getUniqueID());
-  this->LabelRange = Asm->GetTempSymbol("gnu_ranges", getUniqueID());
 }

diff --git a/lib/CodeGen/AsmPrinter/DwarfUnit.h b/lib/CodeGen/AsmPrinter/DwarfUnit.h
index fa8042fe4ce6e517fad539af6adfa835697dc04c..5ce6595c88d4326863720642158743ff5499feb3 100644 (file)
--- a/lib/CodeGen/AsmPrinter/DwarfUnit.h
+++ b/lib/CodeGen/AsmPrinter/DwarfUnit.h
@@ -138,9 +138,6 @@ protected:
   /// The end of the unit within its section.
   MCSymbol *LabelEnd;
 
-  /// The label for the start of the range sets for the elements of this unit.
-  MCSymbol *LabelRange;
-
   /// Skeleton unit associated with this unit.
   DwarfUnit *Skeleton;
 
@@ -167,7 +164,6 @@ public:
         Asm->GetTempSymbol(Section->getLabelBeginName(), getUniqueID());
     this->LabelEnd =
         Asm->GetTempSymbol(Section->getLabelEndName(), getUniqueID());
-    this->LabelRange = Asm->GetTempSymbol("gnu_ranges", getUniqueID());
   }
 
   const MCSection *getSection() const {
@@ -206,11 +202,6 @@ public:
     return LabelEnd;
   }
 
-  MCSymbol *getLabelRange() const {
-    assert(Section);
-    return LabelRange;
-  }
-
   // Accessors.
   unsigned getUniqueID() const { return UniqueID; }
   uint16_t getLanguage() const { return CUNode.getLanguage(); }