Be bug compatible with gcc by returning MMX values in RAX.

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

diff --git a/lib/Target/Mips/MipsTargetAsmInfo.cpp b/lib/Target/Mips/MipsTargetAsmInfo.cpp
index daed29da914938dbbb366543c4d21987bd279c44..7566f41eaf62fd824a11fff543c74628d195a156 100644 (file)
--- a/lib/Target/Mips/MipsTargetAsmInfo.cpp
+++ b/lib/Target/Mips/MipsTargetAsmInfo.cpp
@@ -13,10 +13,14 @@
 
 #include "MipsTargetAsmInfo.h"
 #include "MipsTargetMachine.h"
+#include "llvm/GlobalVariable.h"
 
 using namespace llvm;
 
-MipsTargetAsmInfo::MipsTargetAsmInfo(const MipsTargetMachine &TM) {
+MipsTargetAsmInfo::MipsTargetAsmInfo(const MipsTargetMachine &TM):
+  ELFTargetAsmInfo(TM) {
+
+  Subtarget = &TM.getSubtarget<MipsSubtarget>();
 
   AlignmentIsInBytes          = false;
   COMMDirectiveTakesAlignment = true;
@@ -26,14 +30,69 @@ MipsTargetAsmInfo::MipsTargetAsmInfo(const MipsTargetMachine &TM) {
   PrivateGlobalPrefix         = "$";
   JumpTableDataSection        = "\t.rdata";
   CommentString               = "#";
-  ReadOnlySection             = "\t.rdata";
   ZeroDirective               = "\t.space\t";
   BSSSection                  = "\t.section\t.bss";
-  LCOMMDirective              = "\t.lcomm\t";
+  CStringSection              = ".rodata.str";
 
-  if (!TM.getSubtarget<MipsSubtarget>().hasABICall())
+  if (!Subtarget->hasABICall()) {
     JumpTableDirective = "\t.word\t";
-  else    
+    SmallDataSection = getNamedSection("\t.sdata", SectionFlags::Writeable);
+    SmallBSSSection = getNamedSection("\t.sbss",
+                                      SectionFlags::Writeable |
+                                      SectionFlags::BSS);
+  } else
     JumpTableDirective = "\t.gpword\t";
 
 }
+
+unsigned MipsTargetAsmInfo::
+SectionFlagsForGlobal(const GlobalValue *GV, const char* Name) const {
+  unsigned Flags = ELFTargetAsmInfo::SectionFlagsForGlobal(GV, Name);
+  // Mask out Small Section flag bit, Mips doesnt support 's' section symbol
+  // for its small sections.
+  return (Flags & (~SectionFlags::Small));
+}
+
+SectionKind::Kind MipsTargetAsmInfo::
+SectionKindForGlobal(const GlobalValue *GV) const {
+  SectionKind::Kind K = ELFTargetAsmInfo::SectionKindForGlobal(GV);
+
+  if (Subtarget->hasABICall())
+    return K;
+
+  if (K != SectionKind::Data && K != SectionKind::BSS &&
+      K != SectionKind::RODataMergeConst)
+    return K;
+
+  if (isa<GlobalVariable>(GV)) {
+    const TargetData *TD = TM.getTargetData();
+    unsigned Size = TD->getTypePaddedSize(GV->getType()->getElementType());
+    unsigned Threshold = Subtarget->getSSectionThreshold();
+
+    if (Size > 0 && Size <= Threshold) {
+      if (K == SectionKind::BSS)
+        return SectionKind::SmallBSS;
+      else
+        return SectionKind::SmallData;
+    }
+  }
+
+  return K;
+}
+
+const Section* MipsTargetAsmInfo::
+SelectSectionForGlobal(const GlobalValue *GV) const {
+  SectionKind::Kind K = SectionKindForGlobal(GV);
+  const GlobalVariable *GVA = dyn_cast<GlobalVariable>(GV);
+
+  if (GVA && (!GVA->mayBeOverridden()))
+    switch (K) {
+      case SectionKind::SmallData:
+        return getSmallDataSection();
+      case SectionKind::SmallBSS:
+        return getSmallBSSSection();
+      default: break;
+    }
+
+  return ELFTargetAsmInfo::SelectSectionForGlobal(GV);
+}