[mips] Generate big GOT code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168460 91177308-0d34-0410-b5e6-96231b3b80d8

5 files changed, 25 insertions, 3 deletions

diff --git a/lib/Target/Mips/InstPrinter/MipsInstPrinter.cpp b/lib/Target/Mips/InstPrinter/MipsInstPrinter.cpp
index b38463de4b..68d3ac5f3b 100644
--- a/lib/Target/Mips/InstPrinter/MipsInstPrinter.cpp
+++ b/lib/Target/Mips/InstPrinter/MipsInstPrinter.cpp
@@ -128,6 +128,10 @@ static void printExpr(const MCExpr *Expr, raw_ostream &OS) {
   case MCSymbolRefExpr::VK_Mips_GOT_OFST:  OS << "%got_ofst("; break;
   case MCSymbolRefExpr::VK_Mips_HIGHER:    OS << "%higher("; break;
   case MCSymbolRefExpr::VK_Mips_HIGHEST:   OS << "%highest("; break;
+  case MCSymbolRefExpr::VK_Mips_GOT_HI16:  OS << "%got_hi("; break;
+  case MCSymbolRefExpr::VK_Mips_GOT_LO16:  OS << "%got_lo("; break;
+  case MCSymbolRefExpr::VK_Mips_CALL_HI16: OS << "%call_hi("; break;
+  case MCSymbolRefExpr::VK_Mips_CALL_LO16: OS << "%call_lo("; break;
   }
 
   OS << SRE->getSymbol();
diff --git a/lib/Target/Mips/Mips64InstrInfo.td b/lib/Target/Mips/Mips64InstrInfo.td
index a6111689c7..83322eac8c 100644
--- a/lib/Target/Mips/Mips64InstrInfo.td
+++ b/lib/Target/Mips/Mips64InstrInfo.td
@@ -255,6 +255,7 @@ def : MipsPat<(MipsHi tblockaddress:$in), (LUi64 tblockaddress:$in)>;
 def : MipsPat<(MipsHi tjumptable:$in), (LUi64 tjumptable:$in)>;
 def : MipsPat<(MipsHi tconstpool:$in), (LUi64 tconstpool:$in)>;
 def : MipsPat<(MipsHi tglobaltlsaddr:$in), (LUi64 tglobaltlsaddr:$in)>;
+def : MipsPat<(MipsHi texternalsym:$in), (LUi64 texternalsym:$in)>;
 
 def : MipsPat<(MipsLo tglobaladdr:$in), (DADDiu ZERO_64, tglobaladdr:$in)>;
 def : MipsPat<(MipsLo tblockaddress:$in), (DADDiu ZERO_64, tblockaddress:$in)>;
@@ -262,6 +263,7 @@ def : MipsPat<(MipsLo tjumptable:$in), (DADDiu ZERO_64, tjumptable:$in)>;
 def : MipsPat<(MipsLo tconstpool:$in), (DADDiu ZERO_64, tconstpool:$in)>;
 def : MipsPat<(MipsLo tglobaltlsaddr:$in),
               (DADDiu ZERO_64, tglobaltlsaddr:$in)>;
+def : MipsPat<(MipsLo texternalsym:$in), (DADDiu ZERO_64, texternalsym:$in)>;
 
 def : MipsPat<(add CPU64Regs:$hi, (MipsLo tglobaladdr:$lo)),
               (DADDiu CPU64Regs:$hi, tglobaladdr:$lo)>;
diff --git a/lib/Target/Mips/MipsISelLowering.cpp b/lib/Target/Mips/MipsISelLowering.cpp
index 105c945328..2a3c5f91d4 100644
--- a/lib/Target/Mips/MipsISelLowering.cpp
+++ b/lib/Target/Mips/MipsISelLowering.cpp
@@ -1832,6 +1832,10 @@ SDValue MipsTargetLowering::LowerGlobalAddress(SDValue Op,
   if (GV->hasInternalLinkage() || (GV->hasLocalLinkage() && !isa<Function>(GV)))
     return getAddrLocal(Op, DAG, HasMips64);
 
+  if (LargeGOT)
+    return getAddrGlobalLargeGOT(Op, DAG, MipsII::MO_GOT_HI16,
+                                 MipsII::MO_GOT_LO16);
+
   return getAddrGlobal(Op, DAG,
                        HasMips64 ? MipsII::MO_GOT_DISP : MipsII::MO_GOT16);
 }
@@ -2850,6 +2854,9 @@ MipsTargetLowering::LowerCall(TargetLowering::CallLoweringInfo &CLI,
     if (IsPICCall) {
       if (G->getGlobal()->hasInternalLinkage())
         Callee = getAddrLocal(Callee, DAG, HasMips64);
+      else if (LargeGOT)
+        Callee = getAddrGlobalLargeGOT(Callee, DAG, MipsII::MO_CALL_HI16,
+                                       MipsII::MO_CALL_LO16);
       else
         Callee = getAddrGlobal(Callee, DAG, MipsII::MO_GOT_CALL);
     } else
@@ -2858,11 +2865,14 @@ MipsTargetLowering::LowerCall(TargetLowering::CallLoweringInfo &CLI,
     GlobalOrExternal = true;
   }
   else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee)) {
-    if (IsN64 || (!IsO32 && IsPIC))
-      Callee = getAddrGlobal(Callee, DAG, MipsII::MO_GOT_DISP);
-    else if (!IsPIC) // !N64 && static
+    if (!IsN64 && !IsPIC) // !N64 && static
       Callee = DAG.getTargetExternalSymbol(S->getSymbol(), getPointerTy(),
                                             MipsII::MO_NO_FLAG);
+    else if (LargeGOT)
+      Callee = getAddrGlobalLargeGOT(Callee, DAG, MipsII::MO_CALL_HI16,
+                                     MipsII::MO_CALL_LO16);
+    else if (HasMips64)
+      Callee = getAddrGlobal(Callee, DAG, MipsII::MO_GOT_DISP);
     else // O32 & PIC
       Callee = getAddrGlobal(Callee, DAG, MipsII::MO_GOT_CALL);
 
diff --git a/lib/Target/Mips/MipsInstrInfo.td b/lib/Target/Mips/MipsInstrInfo.td
index 9197066289..9bf5d6b7d7 100644
--- a/lib/Target/Mips/MipsInstrInfo.td
+++ b/lib/Target/Mips/MipsInstrInfo.td
@@ -1154,12 +1154,14 @@ def : MipsPat<(MipsHi tblockaddress:$in), (LUi tblockaddress:$in)>;
 def : MipsPat<(MipsHi tjumptable:$in), (LUi tjumptable:$in)>;
 def : MipsPat<(MipsHi tconstpool:$in), (LUi tconstpool:$in)>;
 def : MipsPat<(MipsHi tglobaltlsaddr:$in), (LUi tglobaltlsaddr:$in)>;
+def : MipsPat<(MipsHi texternalsym:$in), (LUi texternalsym:$in)>;
 
 def : MipsPat<(MipsLo tglobaladdr:$in), (ADDiu ZERO, tglobaladdr:$in)>;
 def : MipsPat<(MipsLo tblockaddress:$in), (ADDiu ZERO, tblockaddress:$in)>;
 def : MipsPat<(MipsLo tjumptable:$in), (ADDiu ZERO, tjumptable:$in)>;
 def : MipsPat<(MipsLo tconstpool:$in), (ADDiu ZERO, tconstpool:$in)>;
 def : MipsPat<(MipsLo tglobaltlsaddr:$in), (ADDiu ZERO, tglobaltlsaddr:$in)>;
+def : MipsPat<(MipsLo texternalsym:$in), (ADDiu ZERO, texternalsym:$in)>;
 
 def : MipsPat<(add CPURegs:$hi, (MipsLo tglobaladdr:$lo)),
               (ADDiu CPURegs:$hi, tglobaladdr:$lo)>;
diff --git a/lib/Target/Mips/MipsMCInstLower.cpp b/lib/Target/Mips/MipsMCInstLower.cpp
index 5fa6339338..4162f981d1 100644
--- a/lib/Target/Mips/MipsMCInstLower.cpp
+++ b/lib/Target/Mips/MipsMCInstLower.cpp
@@ -62,6 +62,10 @@ MCOperand MipsMCInstLower::LowerSymbolOperand(const MachineOperand &MO,
   case MipsII::MO_GOT_OFST:  Kind = MCSymbolRefExpr::VK_Mips_GOT_OFST; break;
   case MipsII::MO_HIGHER:    Kind = MCSymbolRefExpr::VK_Mips_HIGHER; break;
   case MipsII::MO_HIGHEST:   Kind = MCSymbolRefExpr::VK_Mips_HIGHEST; break;
+  case MipsII::MO_GOT_HI16:  Kind = MCSymbolRefExpr::VK_Mips_GOT_HI16; break;
+  case MipsII::MO_GOT_LO16:  Kind = MCSymbolRefExpr::VK_Mips_GOT_LO16; break;
+  case MipsII::MO_CALL_HI16: Kind = MCSymbolRefExpr::VK_Mips_CALL_HI16; break;
+  case MipsII::MO_CALL_LO16: Kind = MCSymbolRefExpr::VK_Mips_CALL_LO16; break;
   }
 
   switch (MOTy) {