From 68fa249cb5a9755f05e437db618d85e0097de8c3 Mon Sep 17 00:00:00 2001
From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Tue, 17 Feb 2015 20:48:01 +0000
Subject: Add r228980 back.

Add support for having multiple sections with the same name and comdat.

Using this in combination with -ffunction-sections allows LLVM to output a .o
file with mulitple sections named .text. This saves space by avoiding long
unique names of the form .text.<C++ mangled name>.

llvm-svn: 229541
---
 llvm/lib/MC/MCSectionELF.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'llvm/lib/MC/MCSectionELF.cpp')

diff --git a/llvm/lib/MC/MCSectionELF.cpp b/llvm/lib/MC/MCSectionELF.cpp
index fb364c87a03..da3868273a7 100644
--- a/llvm/lib/MC/MCSectionELF.cpp
+++ b/llvm/lib/MC/MCSectionELF.cpp
@@ -24,6 +24,9 @@ MCSectionELF::~MCSectionELF() {} // anchor.
 bool MCSectionELF::ShouldOmitSectionDirective(StringRef Name,
                                               const MCAsmInfo &MAI) const {
 
+  if (Unique)
+    return false;
+
   // FIXME: Does .section .bss/.data/.text work everywhere??
   if (Name == ".text" || Name == ".data" ||
       (Name == ".bss" && !MAI.usesELFSectionDirectiveForBSS()))
@@ -144,6 +147,10 @@ void MCSectionELF::PrintSwitchToSection(const MCAsmInfo &MAI,
     printName(OS, Group->getName());
     OS << ",comdat";
   }
+
+  if (Unique)
+    OS << ",unique";
+
   OS << '\n';
 
   if (Subsection)
-- 
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