Compute the ELF SectionKind from the flags.

Any code creating an MCSectionELF knows ELF and already provides the flags.

SectionKind is an abstraction used by common code that uses a plain
MCSection.

Use the flags to compute the SectionKind. This removes a lot of
guessing and boilerplate from the MCSectionELF construction.

llvm-svn: 227476
diff --git a/llvm/lib/Target/Mips/MipsTargetObjectFile.cpp b/llvm/lib/Target/Mips/MipsTargetObjectFile.cpp
index 06379ef..c07693e 100644
--- a/llvm/lib/Target/Mips/MipsTargetObjectFile.cpp
+++ b/llvm/lib/Target/Mips/MipsTargetObjectFile.cpp
@@ -39,15 +39,11 @@
   TargetLoweringObjectFileELF::Initialize(Ctx, TM);
   InitializeELF(TM.Options.UseInitArray);
 
-  SmallDataSection =
-    getContext().getELFSection(".sdata", ELF::SHT_PROGBITS,
-                               ELF::SHF_WRITE |ELF::SHF_ALLOC,
-                               SectionKind::getDataRel());
+  SmallDataSection = getContext().getELFSection(
+      ".sdata", ELF::SHT_PROGBITS, ELF::SHF_WRITE | ELF::SHF_ALLOC);
 
-  SmallBSSSection =
-    getContext().getELFSection(".sbss", ELF::SHT_NOBITS,
-                               ELF::SHF_WRITE |ELF::SHF_ALLOC,
-                               SectionKind::getBSS());
+  SmallBSSSection = getContext().getELFSection(".sbss", ELF::SHT_NOBITS,
+                                               ELF::SHF_WRITE | ELF::SHF_ALLOC);
   this->TM = &TM;
 }