Implement fastcc calling convention for MIPS.

[oota-llvm.git] / lib / Target / Mips / MipsTargetObjectFile.cpp

diff --git a/lib/Target/Mips/MipsTargetObjectFile.cpp b/lib/Target/Mips/MipsTargetObjectFile.cpp
index 85e9d65a32b18f0205c3b058ab2f2e77eb4b933c..04dc60aa6b45734f167006a39e2ecd8150c75134 100644 (file)
--- a/lib/Target/Mips/MipsTargetObjectFile.cpp
+++ b/lib/Target/Mips/MipsTargetObjectFile.cpp
@@ -1,4 +1,4 @@
-//===-- MipsTargetObjectFile.cpp - Mips object files ----------------------===//
+//===-- MipsTargetObjectFile.cpp - Mips Object Files ----------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -8,12 +8,15 @@
 //===----------------------------------------------------------------------===//
 
 #include "MipsTargetObjectFile.h"
+#include "MipsSubtarget.h"
 #include "llvm/DerivedTypes.h"
 #include "llvm/GlobalVariable.h"
+#include "llvm/MC/MCContext.h"
 #include "llvm/MC/MCSectionELF.h"
 #include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Support/ELF.h"
 using namespace llvm;
 
 static cl::opt<unsigned>
@@ -23,21 +26,21 @@ SSThreshold("mips-ssection-threshold", cl::Hidden,
 
 void MipsTargetObjectFile::Initialize(MCContext &Ctx, const TargetMachine &TM){
   TargetLoweringObjectFileELF::Initialize(Ctx, TM);
- 
+
   SmallDataSection =
-    getELFSection(".sdata", MCSectionELF::SHT_PROGBITS,
-                  MCSectionELF::SHF_WRITE | MCSectionELF::SHF_ALLOC,
-                  SectionKind::getDataRel());
-  
+    getContext().getELFSection(".sdata", ELF::SHT_PROGBITS,
+                               ELF::SHF_WRITE |ELF::SHF_ALLOC,
+                               SectionKind::getDataRel());
+
   SmallBSSSection =
-    getELFSection(".sbss", MCSectionELF::SHT_NOBITS,
-                  MCSectionELF::SHF_WRITE | MCSectionELF::SHF_ALLOC,
-                  SectionKind::getBSS());
-  
+    getContext().getELFSection(".sbss", ELF::SHT_NOBITS,
+                               ELF::SHF_WRITE |ELF::SHF_ALLOC,
+                               SectionKind::getBSS());
+
 }
 
-// A address must be loaded from a small section if its size is less than the 
-// small section size threshold. Data in this section must be addressed using 
+// A address must be loaded from a small section if its size is less than the
+// small section size threshold. Data in this section must be addressed using
 // gp_rel operator.
 static bool IsInSmallSection(uint64_t Size) {
   return Size > 0 && Size <= SSThreshold;
@@ -47,7 +50,7 @@ bool MipsTargetObjectFile::IsGlobalInSmallSection(const GlobalValue *GV,
                                                 const TargetMachine &TM) const {
   if (GV->isDeclaration() || GV->hasAvailableExternallyLinkage())
     return false;
-  
+
   return IsGlobalInSmallSection(GV, TM, getKindForGlobal(GV, TM));
 }
 
@@ -56,21 +59,27 @@ bool MipsTargetObjectFile::IsGlobalInSmallSection(const GlobalValue *GV,
 bool MipsTargetObjectFile::
 IsGlobalInSmallSection(const GlobalValue *GV, const TargetMachine &TM,
                        SectionKind Kind) const {
+
+  // Only use small section for non linux targets.
+  const MipsSubtarget &Subtarget = TM.getSubtarget<MipsSubtarget>();
+  if (Subtarget.isLinux())
+    return false;
+
   // Only global variables, not functions.
   const GlobalVariable *GVA = dyn_cast<GlobalVariable>(GV);
   if (!GVA)
     return false;
-  
+
   // We can only do this for datarel or BSS objects for now.
   if (!Kind.isBSS() && !Kind.isDataRel())
     return false;
-  
+
   // If this is a internal constant string, there is a special
   // section for it, but not in small data/bss.
   if (Kind.isMergeable1ByteCString())
     return false;
 
-  const Type *Ty = GV->getType()->getElementType();
+  Type *Ty = GV->getType()->getElementType();
   return IsInSmallSection(TM.getTargetData()->getTypeAllocSize(Ty));
 }
 
@@ -81,13 +90,13 @@ SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
                        Mangler *Mang, const TargetMachine &TM) const {
   // TODO: Could also support "weak" symbols as well with ".gnu.linkonce.s.*"
   // sections?
-  
+
   // Handle Small Section classification here.
   if (Kind.isBSS() && IsGlobalInSmallSection(GV, TM, Kind))
     return SmallBSSSection;
   if (Kind.isDataNoRel() && IsGlobalInSmallSection(GV, TM, Kind))
     return SmallDataSection;
-  
+
   // Otherwise, we work the same as ELF.
   return TargetLoweringObjectFileELF::SelectSectionForGlobal(GV, Kind, Mang,TM);
 }