Vendor import of llvm trunk r130700:

http://llvm.org/svn/llvm-project/llvm/trunk@130700

1 files changed, 22 insertions, 2 deletions

diff --git a/lib/MC/MCSectionELF.cpp b/lib/MC/MCSectionELF.cpp
index d32aea1..dfd77c3 100644
--- a/lib/MC/MCSectionELF.cpp
+++ b/lib/MC/MCSectionELF.cpp
@@ -39,8 +39,28 @@ void MCSectionELF::PrintSwitchToSection(const MCAsmInfo &MAI,
     return;
   }
 
-  OS << "\t.section\t" << getSectionName();
-  
+  StringRef name = getSectionName();
+  if (name.find_first_not_of("0123456789_."
+                             "abcdefghijklmnopqrstuvwxyz"
+                             "ABCDEFGHIJKLMNOPQRSTUVWXYZ") == name.npos) {
+    OS << "\t.section\t" << name;
+  } else {
+    OS << "\t.section\t\"";
+    for (const char *b = name.begin(), *e = name.end(); b < e; ++b) {
+      if (*b == '"') // Unquoted "
+        OS << "\\\"";
+      else if (*b != '\\') // Neither " or backslash
+        OS << *b;
+      else if (b + 1 == e) // Trailing backslash
+        OS << "\\\\";
+      else {
+        OS << b[0] << b[1]; // Quoted character
+        ++b;
+      }
+    }
+    OS << '"';
+  }
+
   // Handle the weird solaris syntax if desired.
   if (MAI.usesSunStyleELFSectionSwitchSyntax() && 
       !(Flags & ELF::SHF_MERGE)) {