From ef6b14f51c137e7386d8a2fb568c5a96defc2d36 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Tue, 9 Mar 2010 00:17:58 +0000
Subject: [PATCH] eliminate an argument from PrintRelDirective, sinking the one
 special case into EmitSectionOffset.  MCize the non-special case in
 EmitSectionOffset.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98014 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/AsmPrinter/DwarfPrinter.cpp | 24 ++++++++++++++----------
 lib/CodeGen/AsmPrinter/DwarfPrinter.h   |  5 +++--
 2 files changed, 17 insertions(+), 12 deletions(-)

diff --git a/lib/CodeGen/AsmPrinter/DwarfPrinter.cpp b/lib/CodeGen/AsmPrinter/DwarfPrinter.cpp
index a40bd54f8cf..8dd72c44964 100644
--- a/lib/CodeGen/AsmPrinter/DwarfPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfPrinter.cpp
@@ -77,10 +77,8 @@ unsigned DwarfPrinter::SizeOfEncodedValue(unsigned Encoding) const {
   return 0;
 }
 
-void DwarfPrinter::PrintRelDirective(bool Force32Bit, bool isInSection) const {
-  if (isInSection && MAI->getDwarfSectionOffsetDirective())
-    O << MAI->getDwarfSectionOffsetDirective();
-  else if (Force32Bit || TD->getPointerSize() == sizeof(int32_t))
+void DwarfPrinter::PrintRelDirective(bool Force32Bit) const {
+  if (Force32Bit || TD->getPointerSize() == sizeof(int32_t))
     O << MAI->getData32bitsDirective();
   else
     O << MAI->getData64bitsDirective();
@@ -253,17 +251,23 @@ void DwarfPrinter::EmitDifference(const MCSymbol *TagHi, const MCSymbol *TagLo,
 void DwarfPrinter::EmitSectionOffset(const MCSymbol *Label,
                                      const MCSymbol *Section,
                                      bool IsSmall, bool isEH) {
-  bool printAbsolute = false;
+  bool isAbsolute;
   if (isEH)
-    printAbsolute = MAI->isAbsoluteEHSectionOffsets();
+    isAbsolute = MAI->isAbsoluteEHSectionOffsets();
   else
-    printAbsolute = MAI->isAbsoluteDebugSectionOffsets();
+    isAbsolute = MAI->isAbsoluteDebugSectionOffsets();
 
-  if (!printAbsolute)
+  if (!isAbsolute)
     return EmitDifference(Label, Section, IsSmall);
   
-  PrintRelDirective(IsSmall, true);
-  PrintLabelName(Label);
+  // On COFF targets, we have to emit the weird .secrel32 directive.
+  if (const char *SecOffDir = MAI->getDwarfSectionOffsetDirective())
+    O << SecOffDir << Label->getName();
+  else {
+    unsigned Size = IsSmall ? 4 : TD->getPointerSize();
+    Asm->OutStreamer.EmitValue(MCSymbolRefExpr::Create(Label, Asm->OutContext),
+                               Size, 0/*AddrSpace*/);
+  }
 }
 
 /// EmitFrameMoves - Emit frame instructions to describe the layout of the
diff --git a/lib/CodeGen/AsmPrinter/DwarfPrinter.h b/lib/CodeGen/AsmPrinter/DwarfPrinter.h
index fc9f3fe9eef..cce62aa8cf0 100644
--- a/lib/CodeGen/AsmPrinter/DwarfPrinter.h
+++ b/lib/CodeGen/AsmPrinter/DwarfPrinter.h
@@ -89,8 +89,7 @@ public:
   unsigned SizeOfEncodedValue(unsigned Encoding) const;
 
   void PrintRelDirective(unsigned Encoding) const;
-  void PrintRelDirective(bool Force32Bit = false,
-                         bool isInSection = false) const;
+  void PrintRelDirective(bool Force32Bit = false) const;
 
   /// EOL - Print a newline character to asm stream.  If a comment is present
   /// then it will be printed first.  Comments should not contain '\n'.
@@ -130,6 +129,8 @@ public:
   void EmitDifference(const MCSymbol *LabelHi, const MCSymbol *LabelLo,
                       bool IsSmall = false);
 
+  /// EmitSectionOffset - Emit Label-Section or use a special purpose directive
+  /// to emit a section offset if the target has one.
   void EmitSectionOffset(const MCSymbol *Label, const MCSymbol *Section,
                          bool IsSmall = false, bool isEH = false);