[llvm] r294960 - [mips] divide macro instruction cleanup.

Simon Dardis via llvm-commits llvm-commits at lists.llvm.org
Mon Feb 13 08:06:49 PST 2017


Author: sdardis
Date: Mon Feb 13 10:06:48 2017
New Revision: 294960

URL: http://llvm.org/viewvc/llvm-project?rev=294960&view=rev
Log:
[mips] divide macro instruction cleanup.

Clean up the implementation of divide macro expansion by getting rid of a
FIXME regarding magic numbers and branch instructions. Match GAS' behaviour
for expansion of ddiv / div in the two and three operand cases. Add the two
operand alias for MIPSR6. Finally, optimize macro expansion cases where the
divisior is the $zero register.

Reviewers: slthakur

Differential Revision: https://reviews.llvm.org/D29887


Modified:
    llvm/trunk/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
    llvm/trunk/lib/Target/Mips/Mips32r6InstrInfo.td
    llvm/trunk/lib/Target/Mips/Mips64InstrInfo.td
    llvm/trunk/lib/Target/Mips/MipsInstrInfo.td
    llvm/trunk/lib/Target/Mips/MipsRegisterInfo.td
    llvm/trunk/test/MC/Mips/macro-ddiv.s
    llvm/trunk/test/MC/Mips/macro-ddivu.s
    llvm/trunk/test/MC/Mips/macro-div-bad.s
    llvm/trunk/test/MC/Mips/macro-div.s
    llvm/trunk/test/MC/Mips/macro-divu-bad.s
    llvm/trunk/test/MC/Mips/macro-divu.s

Modified: llvm/trunk/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Mips/AsmParser/MipsAsmParser.cpp?rev=294960&r1=294959&r2=294960&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Mips/AsmParser/MipsAsmParser.cpp (original)
+++ llvm/trunk/lib/Target/Mips/AsmParser/MipsAsmParser.cpp Mon Feb 13 10:06:48 2017
@@ -968,6 +968,16 @@ public:
   /// Render the operand to an MCInst as a GPR32
   /// Asserts if the wrong number of operands are requested, or the operand
   /// is not a k_RegisterIndex compatible with RegKind_GPR
+  void addGPR32ZeroAsmRegOperands(MCInst &Inst, unsigned N) const {
+    assert(N == 1 && "Invalid number of operands!");
+    Inst.addOperand(MCOperand::createReg(getGPR32Reg()));
+  }
+
+  void addGPR32NonZeroAsmRegOperands(MCInst &Inst, unsigned N) const {
+    assert(N == 1 && "Invalid number of operands!");
+    Inst.addOperand(MCOperand::createReg(getGPR32Reg()));
+  }
+
   void addGPR32AsmRegOperands(MCInst &Inst, unsigned N) const {
     assert(N == 1 && "Invalid number of operands!");
     Inst.addOperand(MCOperand::createReg(getGPR32Reg()));
@@ -1524,6 +1534,15 @@ public:
     return Op;
   }
 
+ bool isGPRZeroAsmReg() const {
+    return isRegIdx() && RegIdx.Kind & RegKind_GPR && RegIdx.Index == 0;
+  }
+
+ bool isGPRNonZeroAsmReg() const {
+   return isRegIdx() && RegIdx.Kind & RegKind_GPR && RegIdx.Index > 0 &&
+          RegIdx.Index <= 31;
+  }
+
   bool isGPRAsmReg() const {
     return isRegIdx() && RegIdx.Kind & RegKind_GPR && RegIdx.Index <= 31;
   }
@@ -1883,6 +1902,61 @@ bool MipsAsmParser::processInstruction(M
     }
   }
 
+  // Warn on division by zero. We're checking here as all instructions get
+  // processed here, not just the macros that need expansion.
+  //
+  // The MIPS backend models most of the divison instructions and macros as
+  // three operand instructions. The pre-R6 divide instructions however have
+  // two operands and explicitly define HI/LO as part of the instruction,
+  // not in the operands.
+  unsigned FirstOp = 1;
+  unsigned SecondOp = 2;
+  switch (Inst.getOpcode()) {
+  default:
+    break;
+  case Mips::SDivIMacro:
+  case Mips::UDivIMacro:
+  case Mips::DSDivIMacro:
+  case Mips::DUDivIMacro:
+    if (Inst.getOperand(2).getImm() == 0) {
+      if (Inst.getOperand(1).getReg() == Mips::ZERO ||
+          Inst.getOperand(1).getReg() == Mips::ZERO_64)
+        Warning(IDLoc, "dividing zero by zero");
+      else
+        Warning(IDLoc, "division by zero");
+    }
+    break;
+  case Mips::DSDIV:
+  case Mips::SDIV:
+  case Mips::UDIV:
+  case Mips::DUDIV:
+  case Mips::UDIV_MM:
+  case Mips::SDIV_MM:
+    FirstOp = 0;
+    SecondOp = 1;
+  case Mips::SDivMacro:
+  case Mips::DSDivMacro:
+  case Mips::UDivMacro:
+  case Mips::DUDivMacro:
+  case Mips::DIV:
+  case Mips::DIVU:
+  case Mips::DDIV:
+  case Mips::DDIVU:
+  case Mips::DIVU_MMR6:
+  case Mips::DDIVU_MM64R6:
+  case Mips::DIV_MMR6:
+  case Mips::DDIV_MM64R6:
+    if (Inst.getOperand(SecondOp).getReg() == Mips::ZERO ||
+        Inst.getOperand(SecondOp).getReg() == Mips::ZERO_64) {
+      if (Inst.getOperand(FirstOp).getReg() == Mips::ZERO ||
+          Inst.getOperand(FirstOp).getReg() == Mips::ZERO_64)
+        Warning(IDLoc, "dividing zero by zero");
+      else
+        Warning(IDLoc, "division by zero");
+    }
+    break;
+  }
+
   // For PIC code convert unconditional jump to unconditional branch.
   if ((Inst.getOpcode() == Mips::J || Inst.getOpcode() == Mips::J_MM) &&
       inPicMode()) {
@@ -3360,6 +3434,14 @@ bool MipsAsmParser::expandCondBranches(M
   return false;
 }
 
+// Expand a integer division macro.
+//
+// Notably we don't have to emit a warning when encountering $rt as the $zero
+// register, or 0 as an immediate. processInstruction() has already done that.
+//
+// The destination register can only be $zero when expanding (S)DivIMacro or
+// D(S)DivMacro.
+
 bool MipsAsmParser::expandDiv(MCInst &Inst, SMLoc IDLoc, MCStreamer &Out,
                               const MCSubtargetInfo *STI, const bool IsMips64,
                               const bool Signed) {
@@ -3408,10 +3490,6 @@ bool MipsAsmParser::expandDiv(MCInst &In
       return true;
 
     if (ImmValue == 0) {
-      if (RsReg == Mips::ZERO || RsReg == Mips::ZERO_64)
-        Warning(IDLoc, "dividing zero by zero");
-      else
-        Warning(IDLoc, "division by zero");
       if (UseTraps)
         TOut.emitRRI(Mips::TEQ, ZeroReg, ZeroReg, 0x7, IDLoc, STI);
       else
@@ -3420,10 +3498,10 @@ bool MipsAsmParser::expandDiv(MCInst &In
     }
 
     if (ImmValue == 1) {
-      TOut.emitRRR(Mips::ADDu, RdReg, RsReg, Mips::ZERO, IDLoc, STI);
+      TOut.emitRRR(Mips::OR, RdReg, RsReg, Mips::ZERO, IDLoc, STI);
       return false;
     } else if (Signed && ImmValue == -1) {
-      TOut.emitRRR(SubOp, RdReg, Mips::ZERO, RsReg, IDLoc, STI);
+      TOut.emitRRR(SubOp, RdReg, ZeroReg, RsReg, IDLoc, STI);
       return false;
     } else {
       if (loadImmediate(ImmValue, ATReg, Mips::NoRegister, isInt<32>(ImmValue),
@@ -3436,51 +3514,31 @@ bool MipsAsmParser::expandDiv(MCInst &In
     return true;
   }
 
-  if (RsReg == Mips::ZERO || RsReg == Mips::ZERO_64) {
-    if (RtReg == Mips::ZERO || RtReg == Mips::ZERO_64)
-      Warning(IDLoc, "dividing zero by zero");
-    if (IsMips64) {
-      if (Signed && (RtReg == Mips::ZERO || RtReg == Mips::ZERO_64)) {
-        if (UseTraps) {
-          TOut.emitRRI(Mips::TEQ, RtReg, ZeroReg, 0x7, IDLoc, STI);
-          return false;
-        }
-
-        TOut.emitII(Mips::BREAK, 0x7, 0, IDLoc, STI);
-        return false;
-      }
-    } else {
-      TOut.emitRR(DivOp, RsReg, RtReg, IDLoc, STI);
-      return false;
-    }
-  }
-
+  // If the macro expansion of (d)div(u) would always trap or break, insert
+  // the trap/break and exit. This gives a different result to GAS. GAS has
+  // an inconsistency/missed optimization in that not all cases are handled
+  // equivalently. As the observed behaviour is the same, we're ok.
   if (RtReg == Mips::ZERO || RtReg == Mips::ZERO_64) {
-    Warning(IDLoc, "division by zero");
-    if (Signed) {
-      if (UseTraps) {
-        TOut.emitRRI(Mips::TEQ, RtReg, ZeroReg, 0x7, IDLoc, STI);
-        return false;
-      }
-
-      TOut.emitII(Mips::BREAK, 0x7, 0, IDLoc, STI);
+    if (UseTraps) {
+      TOut.emitRRI(Mips::TEQ, ZeroReg, ZeroReg, 0x7, IDLoc, STI);
       return false;
     }
+    TOut.emitII(Mips::BREAK, 0x7, 0, IDLoc, STI);
+    return false;
   }
 
-  // FIXME: The values for these two BranchTarget variables may be different in
-  // micromips. These magic numbers need to be removed.
-  unsigned BranchTargetNoTraps;
-  unsigned BranchTarget;
+  // Temporary label for first branch traget
+  MCContext &Context = TOut.getStreamer().getContext();
+  MCSymbol *BrTarget;
+  MCOperand LabelOp;
 
   if (UseTraps) {
-    BranchTarget = IsMips64 ? 12 : 8;
     TOut.emitRRI(Mips::TEQ, RtReg, ZeroReg, 0x7, IDLoc, STI);
   } else {
-    BranchTarget = IsMips64 ? 20 : 16;
-    BranchTargetNoTraps = 8;
     // Branch to the li instruction.
-    TOut.emitRRI(Mips::BNE, RtReg, ZeroReg, BranchTargetNoTraps, IDLoc, STI);
+    BrTarget = Context.createTempSymbol();
+    LabelOp = MCOperand::createExpr(MCSymbolRefExpr::create(BrTarget, Context));
+    TOut.emitRRX(Mips::BNE, RtReg, ZeroReg, LabelOp, IDLoc, STI);
   }
 
   TOut.emitRR(DivOp, RsReg, RtReg, IDLoc, STI);
@@ -3489,6 +3547,9 @@ bool MipsAsmParser::expandDiv(MCInst &In
     TOut.emitII(Mips::BREAK, 0x7, 0, IDLoc, STI);
 
   if (!Signed) {
+    if (!UseTraps)
+      TOut.getStreamer().EmitLabel(BrTarget);
+
     TOut.emitR(Mips::MFLO, RdReg, IDLoc, STI);
     return false;
   }
@@ -3497,15 +3558,23 @@ bool MipsAsmParser::expandDiv(MCInst &In
   if (!ATReg)
     return true;
 
+  if (!UseTraps)
+    TOut.getStreamer().EmitLabel(BrTarget);
+
   TOut.emitRRI(Mips::ADDiu, ATReg, ZeroReg, -1, IDLoc, STI);
+
+  // Temporary label for the second branch target.
+  MCSymbol *BrTargetEnd = Context.createTempSymbol();
+  MCOperand LabelOpEnd =
+      MCOperand::createExpr(MCSymbolRefExpr::create(BrTargetEnd, Context));
+
+  // Branch to the mflo instruction.
+  TOut.emitRRX(Mips::BNE, RtReg, ATReg, LabelOpEnd, IDLoc, STI);
+
   if (IsMips64) {
-    // Branch to the mflo instruction.
-    TOut.emitRRI(Mips::BNE, RtReg, ATReg, BranchTarget, IDLoc, STI);
     TOut.emitRRI(Mips::ADDiu, ATReg, ZeroReg, 1, IDLoc, STI);
     TOut.emitRRI(Mips::DSLL32, ATReg, ATReg, 0x1f, IDLoc, STI);
   } else {
-    // Branch to the mflo instruction.
-    TOut.emitRRI(Mips::BNE, RtReg, ATReg, BranchTarget, IDLoc, STI);
     TOut.emitRI(Mips::LUi, ATReg, (uint16_t)0x8000, IDLoc, STI);
   }
 
@@ -3513,10 +3582,12 @@ bool MipsAsmParser::expandDiv(MCInst &In
     TOut.emitRRI(Mips::TEQ, RsReg, ATReg, 0x6, IDLoc, STI);
   else {
     // Branch to the mflo instruction.
-    TOut.emitRRI(Mips::BNE, RsReg, ATReg, BranchTargetNoTraps, IDLoc, STI);
+    TOut.emitRRX(Mips::BNE, RsReg, ATReg, LabelOpEnd, IDLoc, STI);
     TOut.emitRRI(Mips::SLL, ZeroReg, ZeroReg, 0, IDLoc, STI);
     TOut.emitII(Mips::BREAK, 0x6, 0, IDLoc, STI);
   }
+
+  TOut.getStreamer().EmitLabel(BrTargetEnd);
   TOut.emitR(Mips::MFLO, RdReg, IDLoc, STI);
   return false;
 }

Modified: llvm/trunk/lib/Target/Mips/Mips32r6InstrInfo.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Mips/Mips32r6InstrInfo.td?rev=294960&r1=294959&r2=294960&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Mips/Mips32r6InstrInfo.td (original)
+++ llvm/trunk/lib/Target/Mips/Mips32r6InstrInfo.td Mon Feb 13 10:06:48 2017
@@ -917,6 +917,12 @@ def : MipsInstAlias<"jrc $rs", (JIC GPR3
 let AdditionalPredicates = [NotInMicroMips] in {
 def : MipsInstAlias<"jalrc $rs", (JIALC GPR32Opnd:$rs, 0), 1>, ISA_MIPS32R6, GPR_32;
 }
+
+def : MipsInstAlias<"div $rs, $rt", (DIV GPR32Opnd:$rs, GPR32Opnd:$rs,
+                                         GPR32Opnd:$rt)>, ISA_MIPS32R6;
+def : MipsInstAlias<"divu $rs, $rt", (DIVU GPR32Opnd:$rs, GPR32Opnd:$rs,
+                                           GPR32Opnd:$rt)>, ISA_MIPS32R6;
+
 //===----------------------------------------------------------------------===//
 //
 // Patterns and Pseudo Instructions

Modified: llvm/trunk/lib/Target/Mips/Mips64InstrInfo.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Mips/Mips64InstrInfo.td?rev=294960&r1=294959&r2=294960&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Mips/Mips64InstrInfo.td (original)
+++ llvm/trunk/lib/Target/Mips/Mips64InstrInfo.td Mon Feb 13 10:06:48 2017
@@ -835,3 +835,48 @@ def DMULMacro : MipsAsmPseudoInst<(outs)
                                   "dmul\t$rs, $rt, $rd"> {
   let InsnPredicates = [HasMips3, NotMips64r6, NotCnMips];
 }
+
+let AdditionalPredicates = [NotInMicroMips] in {
+  def DSDivMacro : MipsAsmPseudoInst<(outs GPR64Opnd:$rd),
+                                     (ins GPR64Opnd:$rs, GPR64Opnd:$rt),
+                                     "ddiv\t$rd, $rs, $rt">,
+                   ISA_MIPS3_NOT_32R6_64R6;
+  def DSDivIMacro : MipsAsmPseudoInst<(outs GPR64Opnd:$rd),
+                                      (ins GPR64Opnd:$rs, imm64:$imm),
+                                      "ddiv\t$rd, $rs, $imm">,
+                    ISA_MIPS3_NOT_32R6_64R6;
+  def DUDivMacro : MipsAsmPseudoInst<(outs GPR64Opnd:$rd),
+                                     (ins GPR64Opnd:$rs, GPR64Opnd:$rt),
+                                     "ddivu\t$rd, $rs, $rt">,
+                   ISA_MIPS3_NOT_32R6_64R6;
+  def DUDivIMacro : MipsAsmPseudoInst<(outs GPR64Opnd:$rd),
+                                      (ins GPR64Opnd:$rs, imm64:$imm),
+                                      "ddivu\t$rd, $rs, $imm">,
+                    ISA_MIPS3_NOT_32R6_64R6;
+
+  // GAS expands 'div' and 'ddiv' differently when the destination
+  // register is $zero and the instruction is in the two operand
+  // form. 'ddiv' gets expanded, while 'div' is not expanded.
+
+  def : MipsInstAlias<"ddiv $rs, $rt", (DSDivMacro GPR64Opnd:$rs,
+                                               GPR64Opnd:$rs,
+                                               GPR64Opnd:$rt), 0>,
+        ISA_MIPS3_NOT_32R6_64R6;
+  def : MipsInstAlias<"ddiv $rd, $imm", (DSDivIMacro GPR64Opnd:$rd,
+                                                     GPR64Opnd:$rd,
+                                                     imm64:$imm), 0>,
+        ISA_MIPS3_NOT_32R6_64R6;
+
+  // GAS expands 'divu' and 'ddivu' differently when the destination
+  // register is $zero and the instruction is in the two operand
+  // form. 'ddivu' gets expanded, while 'divu' is not expanded.
+
+  def : MipsInstAlias<"ddivu $rt, $rs", (DUDivMacro GPR64Opnd:$rt,
+                                                    GPR64Opnd:$rt,
+                                                    GPR64Opnd:$rs), 0>,
+        ISA_MIPS3_NOT_32R6_64R6;
+  def : MipsInstAlias<"ddivu $rd, $imm", (DUDivIMacro GPR64Opnd:$rd,
+                                                      GPR64Opnd:$rd,
+                                                      imm64:$imm), 0>,
+        ISA_MIPS3_NOT_32R6_64R6;
+}

Modified: llvm/trunk/lib/Target/Mips/MipsInstrInfo.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Mips/MipsInstrInfo.td?rev=294960&r1=294959&r2=294960&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Mips/MipsInstrInfo.td (original)
+++ llvm/trunk/lib/Target/Mips/MipsInstrInfo.td Mon Feb 13 10:06:48 2017
@@ -2582,7 +2582,7 @@ def BGTULImmMacro : CondBranchImmPseudo<
 // Once the tablegen-erated errors are made better, this needs to be fixed and
 // predicates needs to be restored.
 
-def SDivMacro : MipsAsmPseudoInst<(outs GPR32Opnd:$rd),
+def SDivMacro : MipsAsmPseudoInst<(outs GPR32NonZeroOpnd:$rd),
                                   (ins GPR32Opnd:$rs, GPR32Opnd:$rt),
                                   "div\t$rd, $rs, $rt">,
                 ISA_MIPS1_NOT_32R6_64R6;
@@ -2598,46 +2598,30 @@ def UDivIMacro : MipsAsmPseudoInst<(outs
                                    (ins GPR32Opnd:$rs, simm32:$imm),
                                    "divu\t$rd, $rs, $imm">,
                  ISA_MIPS1_NOT_32R6_64R6;
-def : MipsInstAlias<"div $rt, $rs", (SDivMacro GPR32Opnd:$rt, GPR32Opnd:$rt,
-                                               GPR32Opnd:$rs), 0>,
-      ISA_MIPS1_NOT_32R6_64R6;
+
+
+def : MipsInstAlias<"div $rs, $rt", (SDIV GPR32ZeroOpnd:$rs,
+                                          GPR32Opnd:$rt), 0>,
+     ISA_MIPS1_NOT_32R6_64R6;
+def : MipsInstAlias<"div $rs, $rt", (SDivMacro GPR32NonZeroOpnd:$rs,
+                                               GPR32NonZeroOpnd:$rs,
+                                               GPR32Opnd:$rt), 0>,
+     ISA_MIPS1_NOT_32R6_64R6;
 def : MipsInstAlias<"div $rd, $imm", (SDivIMacro GPR32Opnd:$rd, GPR32Opnd:$rd,
                                                  simm32:$imm), 0>,
       ISA_MIPS1_NOT_32R6_64R6;
-def : MipsInstAlias<"divu $rt, $rs", (UDivMacro GPR32Opnd:$rt, GPR32Opnd:$rt,
+
+def : MipsInstAlias<"divu $rt, $rs", (UDIV GPR32ZeroOpnd:$rt,
+                                           GPR32Opnd:$rs), 0>,
+      ISA_MIPS1_NOT_32R6_64R6;
+def : MipsInstAlias<"divu $rt, $rs", (UDivMacro GPR32NonZeroOpnd:$rt,
+                                                GPR32NonZeroOpnd:$rt,
                                                 GPR32Opnd:$rs), 0>,
       ISA_MIPS1_NOT_32R6_64R6;
+
 def : MipsInstAlias<"divu $rd, $imm", (UDivIMacro GPR32Opnd:$rd, GPR32Opnd:$rd,
                                                   simm32:$imm), 0>,
       ISA_MIPS1_NOT_32R6_64R6;
-def DSDivMacro : MipsAsmPseudoInst<(outs GPR32Opnd:$rd),
-                                   (ins GPR32Opnd:$rs, GPR32Opnd:$rt),
-                                   "ddiv\t$rd, $rs, $rt">,
-                 ISA_MIPS64_NOT_64R6;
-def DSDivIMacro : MipsAsmPseudoInst<(outs GPR32Opnd:$rd),
-                                    (ins GPR32Opnd:$rs, imm64:$imm),
-                                    "ddiv\t$rd, $rs, $imm">,
-                  ISA_MIPS64_NOT_64R6;
-def DUDivMacro : MipsAsmPseudoInst<(outs GPR32Opnd:$rd),
-                                   (ins GPR32Opnd:$rs, GPR32Opnd:$rt),
-                                   "ddivu\t$rd, $rs, $rt">,
-                 ISA_MIPS64_NOT_64R6;
-def DUDivIMacro : MipsAsmPseudoInst<(outs GPR32Opnd:$rd),
-                                    (ins GPR32Opnd:$rs, imm64:$imm),
-                                    "ddivu\t$rd, $rs, $imm">,
-                  ISA_MIPS64_NOT_64R6;
-def : MipsInstAlias<"ddiv $rt, $rs", (DSDivMacro GPR32Opnd:$rt, GPR32Opnd:$rt,
-                                                 GPR32Opnd:$rs), 0>,
-      ISA_MIPS64_NOT_64R6;
-def : MipsInstAlias<"ddiv $rd, $imm", (DSDivIMacro GPR32Opnd:$rd, GPR32Opnd:$rd,
-                                                   imm64:$imm), 0>,
-      ISA_MIPS64_NOT_64R6;
-def : MipsInstAlias<"ddivu $rt, $rs", (DUDivMacro GPR32Opnd:$rt, GPR32Opnd:$rt,
-                                                  GPR32Opnd:$rs), 0>,
-      ISA_MIPS64_NOT_64R6;
-def : MipsInstAlias<"ddivu $rd, $imm", (DUDivIMacro GPR32Opnd:$rd,
-                                                    GPR32Opnd:$rd, imm64:$imm),
-                    0>, ISA_MIPS64_NOT_64R6;
 
 def Ulh : MipsAsmPseudoInst<(outs GPR32Opnd:$rt), (ins mem:$addr),
                             "ulh\t$rt, $addr">; //, ISA_MIPS1_NOT_32R6_64R6;

Modified: llvm/trunk/lib/Target/Mips/MipsRegisterInfo.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Mips/MipsRegisterInfo.td?rev=294960&r1=294959&r2=294960&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Mips/MipsRegisterInfo.td (original)
+++ llvm/trunk/lib/Target/Mips/MipsRegisterInfo.td Mon Feb 13 10:06:48 2017
@@ -290,6 +290,25 @@ class GPR32Class<list<ValueType> regType
   K0, K1, GP, SP, FP, RA)>;
 
 def GPR32 : GPR32Class<[i32]>;
+
+def GPR32ZERO : RegisterClass<"Mips", [i32], 32, (add
+  // Reserved
+  ZERO)>;
+
+def GPR32NONZERO : RegisterClass<"Mips", [i32], 32, (add
+  // Reserved
+  AT,
+  // Return Values and Arguments
+  V0, V1, A0, A1, A2, A3,
+  // Not preserved across procedure calls
+  T0, T1, T2, T3, T4, T5, T6, T7,
+  // Callee save
+  S0, S1, S2, S3, S4, S5, S6, S7,
+  // Not preserved across procedure calls
+  T8, T9,
+  // Reserved
+  K0, K1, GP, SP, FP, RA)>;
+
 def DSPR  : GPR32Class<[v4i8, v2i16]>;
 
 def GPRMM16 : RegisterClass<"Mips", [i32], 32, (add
@@ -317,7 +336,7 @@ def GPRMM16MoveP : RegisterClass<"Mips",
   S0, S2, S3, S4)>;
 
 def GPR64 : RegisterClass<"Mips", [i64], 64, (add
-// Reserved
+  // Reserved
   ZERO_64, AT_64,
   // Return Values and Arguments
   V0_64, V1_64, A0_64, A1_64, A2_64, A3_64,
@@ -479,6 +498,16 @@ def GPR64AsmOperand : MipsAsmRegOperand
   let PredicateMethod = "isGPRAsmReg";
 }
 
+def GPR32ZeroAsmOperand : MipsAsmRegOperand {
+  let Name = "GPR32ZeroAsmReg";
+  let PredicateMethod = "isGPRZeroAsmReg";
+}
+
+def GPR32NonZeroAsmOperand : MipsAsmRegOperand {
+  let Name = "GPR32NonZeroAsmReg";
+  let PredicateMethod = "isGPRNonZeroAsmReg";
+}
+
 def GPR32AsmOperand : MipsAsmRegOperand {
   let Name = "GPR32AsmReg";
   let PredicateMethod = "isGPRAsmReg";
@@ -550,6 +579,14 @@ def MSACtrlAsmOperand : MipsAsmRegOperan
   let Name = "MSACtrlAsmReg";
 }
 
+def GPR32ZeroOpnd : RegisterOperand<GPR32ZERO> {
+  let ParserMatchClass = GPR32ZeroAsmOperand;
+}
+
+def GPR32NonZeroOpnd : RegisterOperand<GPR32NONZERO> {
+  let ParserMatchClass = GPR32NonZeroAsmOperand;
+}
+
 def GPR32Opnd : RegisterOperand<GPR32> {
   let ParserMatchClass = GPR32AsmOperand;
 }

Modified: llvm/trunk/test/MC/Mips/macro-ddiv.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/Mips/macro-ddiv.s?rev=294960&r1=294959&r2=294960&view=diff
==============================================================================
--- llvm/trunk/test/MC/Mips/macro-ddiv.s (original)
+++ llvm/trunk/test/MC/Mips/macro-ddiv.s Mon Feb 13 10:06:48 2017
@@ -1,48 +1,64 @@
-# RUN: llvm-mc %s -triple=mips-unknown-linux -show-encoding -mcpu=mips64r2 | \
+# RUN: llvm-mc %s -triple=mips64-unknown-linux -show-encoding -mcpu=mips64r2 | \
 # RUN:   FileCheck %s --check-prefix=CHECK-NOTRAP
-# RUN: llvm-mc %s -triple=mips-unknown-linux -show-encoding -mcpu=mips64r2 \
+# RUN: llvm-mc %s -triple=mips64-unknown-linux -show-encoding -mcpu=mips64r2 \
 # RUN:  -mattr=+use-tcc-in-div | FileCheck %s --check-prefix=CHECK-TRAP
 
   ddiv $25,$11
-# CHECK-NOTRAP: bne $11, $zero, 8         # encoding: [0x15,0x60,0x00,0x02]
+# CHECK-NOTRAP: bne $11, $zero, .Ltmp0    # encoding: [0x15,0x60,A,A]
+# CHECK-NOTRAP:                           # fixup A - offset: 0, value: .Ltmp0-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: ddiv $zero, $25, $11      # encoding: [0x03,0x2b,0x00,0x1e]
 # CHECK-NOTRAP: break 7                   # encoding: [0x00,0x07,0x00,0x0d]
+# CHECK-NOTRAP: .Ltmp0
 # CHECK-NOTRAP: addiu $1, $zero, -1       # encoding: [0x24,0x01,0xff,0xff]
-# CHECK-NOTRAP: bne $11, $1, 20           # encoding: [0x15,0x61,0x00,0x05]
+# CHECK-NOTRAP: bne $11, $1, .Ltmp1       # encoding: [0x15,0x61,A,A]
+# CHECK-NOTRAP:                           # fixup A - offset: 0, value: .Ltmp1-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: addiu $1, $zero, 1        # encoding: [0x24,0x01,0x00,0x01]
 # CHECK-NOTRAP: dsll32 $1, $1, 31         # encoding: [0x00,0x01,0x0f,0xfc]
-# CHECK-NOTRAP: bne $25, $1, 8            # encoding: [0x17,0x21,0x00,0x02]
+# CHECK-NOTRAP: bne $25, $1, .Ltmp1       # encoding: [0x17,0x21,A,A]
+# CHECK-NOTRAP:                           # fixup A - offset: 0, value: .Ltmp1-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: sll $zero, $zero, 0       # encoding: [0x00,0x00,0x00,0x00]
 # CHECK-NOTRAP: break 6                   # encoding: [0x00,0x06,0x00,0x0d]
+# CHECK-NOTRAP: .Ltmp1
 # CHECK-NOTRAP: mflo $25                  # encoding: [0x00,0x00,0xc8,0x12]
+
 # CHECK-TRAP: teq $11, $zero, 7           # encoding: [0x01,0x60,0x01,0xf4]
 # CHECK-TRAP: ddiv $zero, $25, $11        # encoding: [0x03,0x2b,0x00,0x1e]
 # CHECK-TRAP: addiu $1, $zero, -1         # encoding: [0x24,0x01,0xff,0xff]
-# CHECK-TRAP: bne $11, $1, 12             # encoding: [0x15,0x61,0x00,0x03]
+# CHECK-TRAP: bne $11, $1, .Ltmp0         # encoding: [0x15,0x61,A,A]
+# CHECK-TRAP:                             # fixup A - offset: 0, value: .Ltmp0-4, kind: fixup_Mips_PC16
 # CHECK-TRAP: addiu $1, $zero, 1          # encoding: [0x24,0x01,0x00,0x01]
 # CHECK-TRAP: dsll32 $1, $1, 31           # encoding: [0x00,0x01,0x0f,0xfc]
 # CHECK-TRAP: teq $25, $1, 6              # encoding: [0x03,0x21,0x01,0xb4]
+# CHECK-TRAP: .Ltmp0:
 # CHECK-TRAP: mflo $25                    # encoding: [0x00,0x00,0xc8,0x12]
 
   ddiv $24,$12
-# CHECK-NOTRAP: bne $12, $zero, 8         # encoding: [0x15,0x80,0x00,0x02]
+# CHECK-NOTRAP: bne $12, $zero, .Ltmp2    # encoding: [0x15,0x80,A,A]
+# CHECK-NOTRAP:                           # fixup A - offset: 0, value: .Ltmp2-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: ddiv $zero, $24, $12      # encoding: [0x03,0x0c,0x00,0x1e]
 # CHECK-NOTRAP: break 7                   # encoding: [0x00,0x07,0x00,0x0d]
+# CHECK-NOTRAP: .Ltmp2:
 # CHECK-NOTRAP: addiu $1, $zero, -1       # encoding: [0x24,0x01,0xff,0xff]
-# CHECK-NOTRAP: bne $12, $1, 20           # encoding: [0x15,0x81,0x00,0x05]
+# CHECK-NOTRAP: bne $12, $1, .Ltmp3       # encoding: [0x15,0x81,A,A]
+# CHECK-NOTRAP:                           # fixup A - offset: 0, value: .Ltmp3-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: addiu $1, $zero, 1        # encoding: [0x24,0x01,0x00,0x01]
 # CHECK-NOTRAP: dsll32 $1, $1, 31         # encoding: [0x00,0x01,0x0f,0xfc]
-# CHECK-NOTRAP: bne $24, $1, 8            # encoding: [0x17,0x01,0x00,0x02]
+# CHECK-NOTRAP: bne $24, $1, .Ltmp3       # encoding: [0x17,0x01,A,A]
+# CHECK-NOTRAP:                           # fixup A - offset: 0, value: .Ltmp3-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: sll $zero, $zero, 0       # encoding: [0x00,0x00,0x00,0x00]
 # CHECK-NOTRAP: break 6                   # encoding: [0x00,0x06,0x00,0x0d]
+# CHECK-NOTRAP: .Ltmp3
 # CHECK-NOTRAP: mflo $24                  # encoding: [0x00,0x00,0xc0,0x12]
+
 # CHECK-TRAP: teq $12, $zero, 7           # encoding: [0x01,0x80,0x01,0xf4]
 # CHECK-TRAP: ddiv $zero, $24, $12        # encoding: [0x03,0x0c,0x00,0x1e]
 # CHECK-TRAP: addiu $1, $zero, -1         # encoding: [0x24,0x01,0xff,0xff]
-# CHECK-TRAP: bne $12, $1, 12             # encoding: [0x15,0x81,0x00,0x03]
+# CHECK-TRAP: bne $12, $1, .Ltmp1         # encoding: [0x15,0x81,A,A]
+# CHECK-TRAP:                             # fixup A - offset: 0, value: .Ltmp1-4, kind: fixup_Mips_PC16
 # CHECK-TRAP: addiu $1, $zero, 1          # encoding: [0x24,0x01,0x00,0x01]
 # CHECK-TRAP: dsll32 $1, $1, 31           # encoding: [0x00,0x01,0x0f,0xfc]
 # CHECK-TRAP: teq $24, $1, 6              # encoding: [0x03,0x01,0x01,0xb4]
+# CHECK-TRAP: .Ltmp1:
 # CHECK-TRAP: mflo $24                    # encoding: [0x00,0x00,0xc0,0x12]
 
   ddiv $25,$0
@@ -50,24 +66,17 @@
 # CHECK-TRAP: teq $zero, $zero, 7         # encoding: [0x00,0x00,0x01,0xf4]
 
   ddiv $0,$9
-# CHECK-NOTRAP: bne $9, $zero, 8          # encoding: [0x15,0x20,0x00,0x02]
 # CHECK-NOTRAP: ddiv $zero, $zero, $9     # encoding: [0x00,0x09,0x00,0x1e]
-# CHECK-NOTRAP: break 7                   # encoding: [0x00,0x07,0x00,0x0d]
-# CHECK-NOTRAP: addiu $1, $zero, -1       # encoding: [0x24,0x01,0xff,0xff]
-# CHECK-NOTRAP: bne $9, $1, 20            # encoding: [0x15,0x21,0x00,0x05]
-# CHECK-NOTRAP: addiu $1, $zero, 1        # encoding: [0x24,0x01,0x00,0x01]
-# CHECK-NOTRAP: dsll32 $1, $1, 31         # encoding: [0x00,0x01,0x0f,0xfc]
-# CHECK-NOTRAP: bne $zero, $1, 8          # encoding: [0x14,0x01,0x00,0x02]
-# CHECK-NOTRAP: sll $zero, $zero, 0       # encoding: [0x00,0x00,0x00,0x00]
-# CHECK-NOTRAP: break 6                   # encoding: [0x00,0x06,0x00,0x0d]
-# CHECK-NOTRAP: mflo $zero                # encoding: [0x00,0x00,0x00,0x12]
+
 # CHECK-TRAP: teq $9, $zero, 7            # encoding: [0x01,0x20,0x01,0xf4]
 # CHECK-TRAP: ddiv $zero, $zero, $9       # encoding: [0x00,0x09,0x00,0x1e]
 # CHECK-TRAP: addiu $1, $zero, -1         # encoding: [0x24,0x01,0xff,0xff]
-# CHECK-TRAP: bne $9, $1, 12              # encoding: [0x15,0x21,0x00,0x03]
+# CHECK-TRAP: bne $9, $1, .Ltmp2          # encoding: [0x15,0x21,A,A]
+# CHECK-TRAP:                             # fixup A - offset: 0, value: .Ltmp2-4, kind: fixup_Mips_PC16
 # CHECK-TRAP: addiu $1, $zero, 1          # encoding: [0x24,0x01,0x00,0x01]
 # CHECK-TRAP: dsll32 $1, $1, 31           # encoding: [0x00,0x01,0x0f,0xfc]
 # CHECK-TRAP: teq $zero, $1, 6            # encoding: [0x00,0x01,0x01,0xb4]
+# CHECH-TRAP: .Ltmp2:
 # CHECK-TRAP: mflo $zero                  # encoding: [0x00,0x00,0x00,0x12]
 
   ddiv $0,$0
@@ -83,8 +92,8 @@
 # CHECK-TRAP: teq $zero, $zero, 7         # encoding: [0x00,0x00,0x01,0xf4]
 
   ddiv $4,1
-# CHECK-NOTRAP: move $4, $4               # encoding: [0x00,0x80,0x20,0x21]
-# CHECK-TRAP: move $4, $4                 # encoding: [0x00,0x80,0x20,0x21]
+# CHECK-NOTRAP: move $4, $4               # encoding: [0x00,0x80,0x20,0x25]
+# CHECK-TRAP: move $4, $4                 # encoding: [0x00,0x80,0x20,0x25]
 
   ddiv $4,-1
 # CHECK-NOTRAP: dsub $4, $zero, $4        # encoding: [0x00,0x04,0x20,0x2e]
@@ -190,24 +199,32 @@
 # CHECK-TRAP: mflo $4                     # encoding: [0x00,0x00,0x20,0x12]
 
   ddiv $4,$5,$6
-# CHECK-NOTRAP: bne $6, $zero, 8          # encoding: [0x14,0xc0,0x00,0x02]
+# CHECK-NOTRAP: bne $6, $zero, .Ltmp6     # encoding: [0x14,0xc0,A,A]
+# CHECK-NOTRAP:                           # fixup A - offset: 0, value: .Ltmp6-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: ddiv $zero, $5, $6        # encoding: [0x00,0xa6,0x00,0x1e]
-# CHECK-NOTRAP: break 7                   # encoding: [0x00,0x07,0x00,0x0d]
+# CHECK-NOTRAP: break  7                  # encoding: [0x00,0x07,0x00,0x0d]
+# CHECK-NOTRAP: .Ltmp6:
 # CHECK-NOTRAP: addiu $1, $zero, -1       # encoding: [0x24,0x01,0xff,0xff]
-# CHECK-NOTRAP: bne $6, $1, 20            # encoding: [0x14,0xc1,0x00,0x05]
+# CHECK-NOTRAP: bne $6, $1, .Ltmp7        # encoding: [0x14,0xc1,A,A]
+# CHECK-NOTRAP:                           # fixup A - offset: 0, value: .Ltmp7-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: addiu $1, $zero, 1        # encoding: [0x24,0x01,0x00,0x01]
 # CHECK-NOTRAP: dsll32 $1, $1, 31         # encoding: [0x00,0x01,0x0f,0xfc]
-# CHECK-NOTRAP: bne $5, $1, 8             # encoding: [0x14,0xa1,0x00,0x02]
+# CHECK-NOTRAP: bne $5, $1, .Ltmp7        # encoding: [0x14,0xa1,A,A]
+# CHECK-NOTRAP:                           # fixup A - offset: 0, value: .Ltmp7-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: sll $zero, $zero, 0       # encoding: [0x00,0x00,0x00,0x00]
-# CHECK-NOTRAP: break 6                   # encoding: [0x00,0x06,0x00,0x0d]
+# CHECK-NOTRAP: break  6                  # encoding: [0x00,0x06,0x00,0x0d]
+# CHECK-NOTRAP: .Ltmp7:
 # CHECK-NOTRAP: mflo $4                   # encoding: [0x00,0x00,0x20,0x12]
+
 # CHECK-TRAP: teq $6, $zero, 7            # encoding: [0x00,0xc0,0x01,0xf4]
 # CHECK-TRAP: ddiv $zero, $5, $6          # encoding: [0x00,0xa6,0x00,0x1e]
 # CHECK-TRAP: addiu $1, $zero, -1         # encoding: [0x24,0x01,0xff,0xff]
-# CHECK-TRAP: bne $6, $1, 12              # encoding: [0x14,0xc1,0x00,0x03]
+# CHECK-TRAP: bne $6, $1, .Ltmp3          # encoding: [0x14,0xc1,A,A]
+# CHECK-TRAP:                             # fixup A - offset: 0, value: .Ltmp3-4, kind: fixup_Mips_PC16
 # CHECK-TRAP: addiu $1, $zero, 1          # encoding: [0x24,0x01,0x00,0x01]
 # CHECK-TRAP: dsll32 $1, $1, 31           # encoding: [0x00,0x01,0x0f,0xfc]
 # CHECK-TRAP: teq $5, $1, 6               # encoding: [0x00,0xa1,0x01,0xb4]
+# CHECK-TRAP: .Ltmp3:
 # CHECK-TRAP: mflo $4                     # encoding: [0x00,0x00,0x20,0x12]
 
   ddiv $4,$5,$0
@@ -231,8 +248,8 @@
 # CHECK-TRAP: teq $zero, $zero, 7         # encoding: [0x00,0x00,0x01,0xf4]
 
   ddiv $4,$5,1
-# CHECK-NOTRAP: move $4, $5               # encoding: [0x00,0xa0,0x20,0x21]
-# CHECK-TRAP: move     $4, $5             # encoding: [0x00,0xa0,0x20,0x21]
+# CHECK-NOTRAP: move $4, $5               # encoding: [0x00,0xa0,0x20,0x25]
+# CHECK-TRAP: move     $4, $5             # encoding: [0x00,0xa0,0x20,0x25]
 
   ddiv $4,$5,-1
 # CHECK-NOTRAP: dsub $4, $zero, $5        # encoding: [0x00,0x05,0x20,0x2e]
@@ -328,12 +345,10 @@
 # CHECK-NOTRAP: ori $1, $1, 65535         # encoding: [0x34,0x21,0xff,0xff]
 # CHECK-NOTRAP: ddiv $zero, $5, $1        # encoding: [0x00,0xa1,0x00,0x1e]
 # CHECK-NOTRAP: mflo $4                   # encoding: [0x00,0x00,0x20,0x12]
-# CHECK-TRAP: addiu $1, $zero, 15       # encoding: [0x24,0x01,0x00,0x0f]
-# CHECK-TRAP: dsll $1, $1, 16           # encoding: [0x00,0x01,0x0c,0x38]
-# CHECK-TRAP: ori $1, $1, 65535         # encoding: [0x34,0x21,0xff,0xff]
-# CHECK-TRAP: dsll $1, $1, 16           # encoding: [0x00,0x01,0x0c,0x38]
-# CHECK-TRAP: ori $1, $1, 65535         # encoding: [0x34,0x21,0xff,0xff]
-# CHECK-TRAP: ddiv $zero, $5, $1        # encoding: [0x00,0xa1,0x00,0x1e]
-# CHECK-TRAP: mflo $4                   # encoding: [0x00,0x00,0x20,0x12]
-
-
+# CHECK-TRAP: addiu $1, $zero, 15         # encoding: [0x24,0x01,0x00,0x0f]
+# CHECK-TRAP: dsll $1, $1, 16             # encoding: [0x00,0x01,0x0c,0x38]
+# CHECK-TRAP: ori $1, $1, 65535           # encoding: [0x34,0x21,0xff,0xff]
+# CHECK-TRAP: dsll $1, $1, 16             # encoding: [0x00,0x01,0x0c,0x38]
+# CHECK-TRAP: ori $1, $1, 65535           # encoding: [0x34,0x21,0xff,0xff]
+# CHECK-TRAP: ddiv $zero, $5, $1          # encoding: [0x00,0xa1,0x00,0x1e]
+# CHECK-TRAP: mflo $4                     # encoding: [0x00,0x00,0x20,0x12]

Modified: llvm/trunk/test/MC/Mips/macro-ddivu.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/Mips/macro-ddivu.s?rev=294960&r1=294959&r2=294960&view=diff
==============================================================================
--- llvm/trunk/test/MC/Mips/macro-ddivu.s (original)
+++ llvm/trunk/test/MC/Mips/macro-ddivu.s Mon Feb 13 10:06:48 2017
@@ -1,52 +1,48 @@
-# RUN: llvm-mc %s -triple=mips-unknown-linux -show-encoding -mcpu=mips64r2 | \
+# RUN: llvm-mc %s -triple=mips64-unknown-linux -show-encoding -mcpu=mips64r2 | \
 # RUN:   FileCheck %s --check-prefix=CHECK-NOTRAP
-# RUN: llvm-mc %s -triple=mips-unknown-linux -show-encoding -mcpu=mips64r2 \
+# RUN: llvm-mc %s -triple=mips64-unknown-linux -show-encoding -mcpu=mips64r2 \
 # RUN:  -mattr=+use-tcc-in-div | FileCheck %s --check-prefix=CHECK-TRAP
 
   ddivu $25,$11
-# CHECK-NOTRAP: bne $11, $zero, 8         # encoding: [0x15,0x60,0x00,0x02]
+# CHECK-NOTRAP: bne $11, $zero, .Ltmp0    # encoding: [0x15,0x60,A,A]
+# CHECK-NOTRAP:                           # fixup A - offset: 0, value: .Ltmp0-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: ddivu $zero, $25, $11     # encoding: [0x03,0x2b,0x00,0x1f]
 # CHECK-NOTRAP: break 7                   # encoding: [0x00,0x07,0x00,0x0d]
+# CHECK-NOTRAP: .Ltmp0
 # CHECK-NOTRAP: mflo $25                  # encoding: [0x00,0x00,0xc8,0x12]
 # CHECK-TRAP: teq $11, $zero, 7           # encoding: [0x01,0x60,0x01,0xf4]
 # CHECK-TRAP: ddivu $zero, $25, $11       # encoding: [0x03,0x2b,0x00,0x1f]
 # CHECK-TRAP: mflo $25                    # encoding: [0x00,0x00,0xc8,0x12]
 
   ddivu $24,$12
-# CHECK-NOTRAP: bne $12, $zero, 8         # encoding: [0x15,0x80,0x00,0x02]
+# CHECK-NOTRAP: bne $12, $zero, .Ltmp1    # encoding: [0x15,0x80,A,A]
+# CHECK-NOTRAP:                           # fixup A - offset: 0, value: .Ltmp1-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: ddivu $zero, $24, $12     # encoding: [0x03,0x0c,0x00,0x1f]
 # CHECK-NOTRAP: break 7                   # encoding: [0x00,0x07,0x00,0x0d]
+# CHECK-NOTRAP: .Ltmp1
 # CHECK-NOTRAP: mflo $24                  # encoding: [0x00,0x00,0xc0,0x12]
 # CHECK-TRAP: teq $12, $zero, 7           # encoding: [0x01,0x80,0x01,0xf4]
 # CHECK-TRAP: ddivu $zero, $24, $12       # encoding: [0x03,0x0c,0x00,0x1f]
 # CHECK-TRAP: mflo $24                    # encoding: [0x00,0x00,0xc0,0x12]
 
   ddivu $25,$0
-# CHECK-NOTRAP: bne $zero, $zero, 8       # encoding: [0x14,0x00,0x00,0x02]
-# CHECK-NOTRAP: ddivu $zero, $25, $zero   # encoding: [0x03,0x20,0x00,0x1f]
 # CHECK-NOTRAP: break 7                   # encoding: [0x00,0x07,0x00,0x0d]
-# CHECK-NOTRAP: mflo $25                  # encoding: [0x00,0x00,0xc8,0x12]
 # CHECK-TRAP: teq $zero, $zero, 7         # encoding: [0x00,0x00,0x01,0xf4]
-# CHECK-TRAP: ddivu $zero, $25, $zero     # encoding: [0x03,0x20,0x00,0x1f]
-# CHECK-TRAP: mflo $25                    # encoding: [0x00,0x00,0xc8,0x12]
 
   ddivu $0,$9
-# CHECK-NOTRAP: bne $9, $zero, 8          # encoding: [0x15,0x20,0x00,0x02]
+# CHECK-NOTRAP: bne $9, $zero, .Ltmp2     # encoding: [0x15,0x20,A,A]
+# CHECK-NOTRAP:                           # fixup A - offset: 0, value: .Ltmp2-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: ddivu $zero, $zero, $9    # encoding: [0x00,0x09,0x00,0x1f]
 # CHECK-NOTRAP: break 7                   # encoding: [0x00,0x07,0x00,0x0d]
+# CHECK-NOTRAP: .Ltmp2
 # CHECK-NOTRAP: mflo $zero                # encoding: [0x00,0x00,0x00,0x12]
 # CHECK-TRAP: teq $9, $zero, 7            # encoding: [0x01,0x20,0x01,0xf4]
 # CHECK-TRAP: ddivu $zero, $zero, $9      # encoding: [0x00,0x09,0x00,0x1f]
 # CHECK-TRAP: mflo $zero                  # encoding: [0x00,0x00,0x00,0x12]
 
   ddivu $0,$0
-# CHECK-NOTRAP: bne $zero, $zero, 8       # encoding: [0x14,0x00,0x00,0x02]
-# CHECK-NOTRAP: ddivu $zero, $zero, $zero # encoding: [0x00,0x00,0x00,0x1f]
 # CHECK-NOTRAP: break 7                   # encoding: [0x00,0x07,0x00,0x0d]
-# CHECK-NOTRAP: mflo $zero                # encoding: [0x00,0x00,0x00,0x12]
 # CHECK-TRAP: teq $zero, $zero, 7         # encoding: [0x00,0x00,0x01,0xf4]
-# CHECK-TRAP: ddivu $zero, $zero, $zero   # encoding: [0x00,0x00,0x00,0x1f]
-# CHECK-TRAP: mflo $zero                  # encoding: [0x00,0x00,0x00,0x12]
 
   ddivu $4,0
 # CHECK-NOTRAP: break 7                   # encoding: [0x00,0x07,0x00,0x0d]
@@ -57,8 +53,8 @@
 # CHECK-TRAP: teq $zero, $zero, 7         # encoding: [0x00,0x00,0x01,0xf4]
 
   ddivu $4,1
-# CHECK-NOTRAP: move $4, $4               # encoding: [0x00,0x80,0x20,0x21]
-# CHECK-TRAP: move $4, $4                 # encoding: [0x00,0x80,0x20,0x21]
+# CHECK-NOTRAP: move $4, $4               # encoding: [0x00,0x80,0x20,0x25]
+# CHECK-TRAP: move $4, $4                 # encoding: [0x00,0x80,0x20,0x25]
 
   ddivu $4,-1
 # CHECK-NOTRAP: addiu $1, $zero, -1       # encoding: [0x24,0x01,0xff,0xff]
@@ -159,31 +155,23 @@
 # CHECK-TRAP: mflo $4                     # encoding: [0x00,0x00,0x20,0x12]
 
   ddivu $4,$5,$6
-# CHECK-NOTRAP: bne $6, $zero, 8          # encoding: [0x14,0xc0,0x00,0x02]
+# CHECK-NOTRAP: bne $6, $zero, .Ltmp3     # encoding: [0x14,0xc0,A,A]
+# CHECK-NOTRAP:                           # fixup A - offset: 0, value: .Ltmp3-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: ddivu $zero, $5, $6       # encoding: [0x00,0xa6,0x00,0x1f]
 # CHECK-NOTRAP: break 7                   # encoding: [0x00,0x07,0x00,0x0d]
+# CHECK-NOTRAP: .Ltmp3:
 # CHECK-NOTRAP: mflo $4                   # encoding: [0x00,0x00,0x20,0x12]
 # CHECK-TRAP: teq $6, $zero, 7            # encoding: [0x00,0xc0,0x01,0xf4]
 # CHECK-TRAP: ddivu $zero, $5, $6         # encoding: [0x00,0xa6,0x00,0x1f]
 # CHECK-TRAP: mflo $4                     # encoding: [0x00,0x00,0x20,0x12]
 
   ddivu $4,$5,$0
-# CHECK-NOTRAP: bne $zero, $zero, 8       # encoding: [0x14,0x00,0x00,0x02]
-# CHECK-NOTRAP: ddivu $zero, $5, $zero    # encoding: [0x00,0xa0,0x00,0x1f]
 # CHECK-NOTRAP: break 7                   # encoding: [0x00,0x07,0x00,0x0d]
-# CHECK-NOTRAP: mflo $4                   # encoding: [0x00,0x00,0x20,0x12]
 # CHECK-TRAP: teq $zero, $zero, 7         # encoding: [0x00,0x00,0x01,0xf4]
-# CHECK-TRAP: ddivu $zero, $5, $zero      # encoding: [0x00,0xa0,0x00,0x1f]
-# CHECK-TRAP: mflo $4                     # encoding: [0x00,0x00,0x20,0x12]
 
   ddivu $4,$0,$0
-# CHECK-NOTRAP: bne $zero, $zero, 8       # encoding: [0x14,0x00,0x00,0x02]
-# CHECK-NOTRAP: ddivu $zero, $zero, $zero # encoding: [0x00,0x00,0x00,0x1f]
 # CHECK-NOTRAP: break 7                   # encoding: [0x00,0x07,0x00,0x0d]
-# CHECK-NOTRAP: mflo $4                   # encoding: [0x00,0x00,0x20,0x12]
 # CHECK-TRAP: teq $zero, $zero, 7         # encoding: [0x00,0x00,0x01,0xf4]
-# CHECK-TRAP: ddivu $zero, $zero, $zero   # encoding: [0x00,0x00,0x00,0x1f]
-# CHECK-TRAP: mflo $4                     # encoding: [0x00,0x00,0x20,0x12]
 
   ddivu $0, $4, $5
 # CHECK-NOTRAP: ddivu $zero, $4, $5       # encoding: [0x00,0x85,0x00,0x1f]
@@ -202,8 +190,8 @@
 # CHECK-TRAP: teq $zero, $zero, 7         # encoding: [0x00,0x00,0x01,0xf4]
 
   ddivu $4,$5,1
-# CHECK-NOTRAP: move $4, $5               # encoding: [0x00,0xa0,0x20,0x21]
-# CHECK-TRAP: move $4, $5                 # encoding: [0x00,0xa0,0x20,0x21]
+# CHECK-NOTRAP: move $4, $5               # encoding: [0x00,0xa0,0x20,0x25]
+# CHECK-TRAP: move $4, $5                 # encoding: [0x00,0xa0,0x20,0x25]
 
   ddivu $4,$5,-1
 # CHECK-NOTRAP: addiu $1, $zero, -1       # encoding: [0x24,0x01,0xff,0xff]

Modified: llvm/trunk/test/MC/Mips/macro-div-bad.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/Mips/macro-div-bad.s?rev=294960&r1=294959&r2=294960&view=diff
==============================================================================
--- llvm/trunk/test/MC/Mips/macro-div-bad.s (original)
+++ llvm/trunk/test/MC/Mips/macro-div-bad.s Mon Feb 13 10:06:48 2017
@@ -8,7 +8,7 @@
 # RUN: FileCheck %s --check-prefix=NOT-R6
 
   .text
-  div $25, $11
+  div $25, 11
   # R6: :[[@LINE-1]]:3: error: instruction requires a CPU feature not currently enabled
 
   div $25, $0

Modified: llvm/trunk/test/MC/Mips/macro-div.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/Mips/macro-div.s?rev=294960&r1=294959&r2=294960&view=diff
==============================================================================
--- llvm/trunk/test/MC/Mips/macro-div.s (original)
+++ llvm/trunk/test/MC/Mips/macro-div.s Mon Feb 13 10:06:48 2017
@@ -4,41 +4,55 @@
 # RUN:  -mattr=+use-tcc-in-div | FileCheck %s --check-prefix=CHECK-TRAP
 
   div $25,$11
-# CHECK-NOTRAP: bnez $11, 8               # encoding: [0x15,0x60,0x00,0x02]
+# CHECK-NOTRAP: bnez $11, $tmp0           # encoding: [0x15,0x60,A,A]
+# CHECK-NOTRAP:                           # fixup A - offset: 0, value: ($tmp0)-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: div $zero, $25, $11       # encoding: [0x03,0x2b,0x00,0x1a]
-# CHECK-NOTRAP: break 7                   # encoding: [0x00,0x07,0x00,0x0d]
+# CHECK-NOTRAP: break  7                  # encoding: [0x00,0x07,0x00,0x0d]
+# CHECK-NOTRAP: $tmp0:
 # CHECK-NOTRAP: addiu $1, $zero, -1       # encoding: [0x24,0x01,0xff,0xff]
-# CHECK-NOTRAP: bne $11, $1, 16           # encoding: [0x15,0x61,0x00,0x04]
+# CHECK-NOTRAP: bne $11, $1, $tmp1        # encoding: [0x15,0x61,A,A]
+# CHECK-NOTRAP:                           # fixup A - offset: 0, value: ($tmp1)-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: lui $1, 32768             # encoding: [0x3c,0x01,0x80,0x00]
-# CHECK-NOTRAP: bne $25, $1, 8            # encoding: [0x17,0x21,0x00,0x02]
+# CHECK-NOTRAP: bne $25, $1, $tmp1        # encoding: [0x17,0x21,A,A]
+# CHECK-NOTRAP:                           # fixup A - offset: 0, value: ($tmp1)-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: nop                       # encoding: [0x00,0x00,0x00,0x00]
 # CHECK-NOTRAP: break 6                   # encoding: [0x00,0x06,0x00,0x0d]
+# CHECK-NOTRAP: $tmp1:
 # CHECK-NOTRAP: mflo $25                  # encoding: [0x00,0x00,0xc8,0x12]
 # CHECK-TRAP: teq $11, $zero, 7           # encoding: [0x01,0x60,0x01,0xf4]
 # CHECK-TRAP: div $zero, $25, $11         # encoding: [0x03,0x2b,0x00,0x1a]
 # CHECK-TRAP: addiu $1, $zero, -1         # encoding: [0x24,0x01,0xff,0xff]
-# CHECK-TRAP: bne $11, $1, 8              # encoding: [0x15,0x61,0x00,0x02]
+# CHECK-TRAP: bne $11, $1, $tmp0          # encoding: [0x15,0x61,A,A]
+# CHECK-TRAP:                             # fixup A - offset: 0, value: ($tmp0)-4, kind: fixup_Mips_PC16
 # CHECK-TRAP: lui $1, 32768               # encoding: [0x3c,0x01,0x80,0x00]
 # CHECK-TRAP: teq $25, $1, 6              # encoding: [0x03,0x21,0x01,0xb4]
+# CHECK-TRAP: $tmp0:
 # CHECK-TRAP: mflo $25                    # encoding: [0x00,0x00,0xc8,0x12]
 
   div $24,$12
-# CHECK-NOTRAP: bnez $12, 8               # encoding: [0x15,0x80,0x00,0x02]
+# CHECK-NOTRAP: bnez $12, $tmp2           # encoding: [0x15,0x80,A,A]
+# CHECK-NOTRAP:                           # fixup A - offset: 0, value: ($tmp2)-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: div $zero, $24, $12       # encoding: [0x03,0x0c,0x00,0x1a]
-# CHECK-NOTRAP: break 7                   # encoding: [0x00,0x07,0x00,0x0d]
+# CHECK-NOTRAP: break  7                  # encoding: [0x00,0x07,0x00,0x0d]
+# CHECK-NOTRAP: $tmp2:
 # CHECK-NOTRAP: addiu $1, $zero, -1       # encoding: [0x24,0x01,0xff,0xff]
-# CHECK-NOTRAP: bne $12, $1, 16           # encoding: [0x15,0x81,0x00,0x04]
+# CHECK-NOTRAP: bne $12, $1, $tmp3        # encoding: [0x15,0x81,A,A]
+# CHECK-NOTRAP:                           # fixup A - offset: 0, value: ($tmp3)-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: lui $1, 32768             # encoding: [0x3c,0x01,0x80,0x00]
-# CHECK-NOTRAP: bne $24, $1, 8            # encoding: [0x17,0x01,0x00,0x02]
+# CHECK-NOTRAP: bne $24, $1, $tmp3        # encoding: [0x17,0x01,A,A]
+# CHECK-NOTRAP:                           # fixup A - offset: 0, value: ($tmp3)-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: nop                       # encoding: [0x00,0x00,0x00,0x00]
-# CHECK-NOTRAP: break 6                   # encoding: [0x00,0x06,0x00,0x0d]
+# CHECK-NOTRAP: break  6                  # encoding: [0x00,0x06,0x00,0x0d]
+# CHECK-NOTRAP: $tmp3:
 # CHECK-NOTRAP: mflo $24                  # encoding: [0x00,0x00,0xc0,0x12]
 # CHECK-TRAP: teq $12, $zero, 7           # encoding: [0x01,0x80,0x01,0xf4]
 # CHECK-TRAP: div $zero, $24, $12         # encoding: [0x03,0x0c,0x00,0x1a]
 # CHECK-TRAP: addiu $1, $zero, -1         # encoding: [0x24,0x01,0xff,0xff]
-# CHECK-TRAP: bne $12, $1, 8              # encoding: [0x15,0x81,0x00,0x02]
+# CHECK-TRAP: bne $12, $1, $tmp1          # encoding: [0x15,0x81,A,A]
+# CHECK-TRAP:                             # fixup A - offset: 0, value: ($tmp1)-4, kind: fixup_Mips_PC16
 # CHECK-TRAP: lui $1, 32768               # encoding: [0x3c,0x01,0x80,0x00]
 # CHECK-TRAP: teq $24, $1, 6              # encoding: [0x03,0x01,0x01,0xb4]
+# CHECK-TRAP: $tmp1:
 # CHECK-TRAP: mflo $24                    # encoding: [0x00,0x00,0xc0,0x12]
 
   div $25,$0
@@ -62,8 +76,8 @@
 # CHECK-TRAP: teq $zero, $zero, 7         # encoding: [0x00,0x00,0x01,0xf4]
 
   div $4,1
-# CHECK-NOTRAP: move $4, $4               # encoding: [0x00,0x80,0x20,0x21]
-# CHECK-TRAP: move $4, $4                 # encoding: [0x00,0x80,0x20,0x21]
+# CHECK-NOTRAP: move $4, $4               # encoding: [0x00,0x80,0x20,0x25]
+# CHECK-TRAP: move $4, $4                 # encoding: [0x00,0x80,0x20,0x25]
 
   div $4,-1
 # CHECK-NOTRAP: neg  $4, $4               # encoding: [0x00,0x04,0x20,0x22]
@@ -112,31 +126,38 @@
 # CHECK-TRAP: mflo  $4                    # encoding: [0x00,0x00,0x20,0x12]
 
   div $4,$5,$6
-# CHECK-NOTRAP: bnez $6, 8                # encoding: [0x14,0xc0,0x00,0x02]
+# CHECK-NOTRAP: bnez $6, $tmp4            # encoding: [0x14,0xc0,A,A]
+# CHECK-NOTRAP:                           # fixup A - offset: 0, value: ($tmp4)-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: div $zero, $5, $6         # encoding: [0x00,0xa6,0x00,0x1a]
-# CHECK-NOTRAP: break 7                   # encoding: [0x00,0x07,0x00,0x0d]
+# CHECK-NOTRAP: break  7                  # encoding: [0x00,0x07,0x00,0x0d]
+# CHECK-NOTRAP: $tmp4:
 # CHECK-NOTRAP: addiu $1, $zero, -1       # encoding: [0x24,0x01,0xff,0xff]
-# CHECK-NOTRAP: bne $6, $1, 16            # encoding: [0x14,0xc1,0x00,0x04]
+# CHECK-NOTRAP: bne $6, $1, $tmp5         # encoding: [0x14,0xc1,A,A]
+# CHECK-NOTRAP:                           # fixup A - offset: 0, value: ($tmp5)-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: lui $1, 32768             # encoding: [0x3c,0x01,0x80,0x00]
-# CHECK-NOTRAP: bne $5, $1, 8             # encoding: [0x14,0xa1,0x00,0x02]
+# CHECK-NOTRAP: bne $5, $1, $tmp5         # encoding: [0x14,0xa1,A,A]
+# CHECK-NOTRAP:                           # fixup A - offset: 0, value: ($tmp5)-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: nop                       # encoding: [0x00,0x00,0x00,0x00]
 # CHECK-NOTRAP: break 6                   # encoding: [0x00,0x06,0x00,0x0d]
+# CHECK-NOTRAP: $tmp5:
 # CHECK-NOTRAP: mflo $4                   # encoding: [0x00,0x00,0x20,0x12]
 # CHECK-TRAP: teq $6, $zero, 7            # encoding: [0x00,0xc0,0x01,0xf4]
 # CHECK-TRAP: div $zero, $5, $6           # encoding: [0x00,0xa6,0x00,0x1a]
 # CHECK-TRAP: addiu $1, $zero, -1         # encoding: [0x24,0x01,0xff,0xff]
-# CHECK-TRAP: bne $6, $1, 8               # encoding: [0x14,0xc1,0x00,0x02]
+# CHECK-TRAP: bne $6, $1, $tmp2           # encoding: [0x14,0xc1,A,A]
+# CHECK-TRAP:                             # fixup A - offset: 0, value: ($tmp2)-4, kind: fixup_Mips_PC16
 # CHECK-TRAP: lui $1, 32768               # encoding: [0x3c,0x01,0x80,0x00]
 # CHECK-TRAP: teq $5, $1, 6               # encoding: [0x00,0xa1,0x01,0xb4]
-# CHECK-TRAP: mflo  $4                    # encoding: [0x00,0x00,0x20,0x12]
+# CHECK-TRAP: $tmp2:
+# CHECK-TRAP: mflo $4                     # encoding: [0x00,0x00,0x20,0x12]
 
   div $4,$5,$0
 # CHECK-NOTRAP: break 7                   # encoding: [0x00,0x07,0x00,0x0d]
 # CHECK-TRAP: teq $zero, $zero, 7         # encoding: [0x00,0x00,0x01,0xf4]
 
   div $4,$0,$0
-# CHECK-NOTRAP: div $zero, $zero, $zero   # encoding: [0x00,0x00,0x00,0x1a]
-# CHECK-TRAP: div $zero, $zero, $zero     # encoding: [0x00,0x00,0x00,0x1a]
+# CHECK-NOTRAP: break 7                   # encoding: [0x00,0x07,0x00,0x0d]
+# CHECK-TRAP: teq $zero, $zero, 7         # encoding: [0x00,0x00,0x01,0xf4]
 
   div $0,$4,$5
 # CHECK-NOTRAP: div $zero, $4, $5         # encoding: [0x00,0x85,0x00,0x1a]
@@ -151,8 +172,8 @@
 # CHECK-TRAP: teq $zero, $zero, 7         # encoding: [0x00,0x00,0x01,0xf4]
 
   div $4,$5,1
-# CHECK-NOTRAP: move $4, $5               # encoding: [0x00,0xa0,0x20,0x21]
-# CHECK-TRAP: move $4, $5                 # encoding: [0x00,0xa0,0x20,0x21]
+# CHECK-NOTRAP: move $4, $5               # encoding: [0x00,0xa0,0x20,0x25]
+# CHECK-TRAP: move $4, $5                 # encoding: [0x00,0xa0,0x20,0x25]
 
   div $4,$5,-1
 # CHECK-NOTRAP: neg  $4, $5               # encoding: [0x00,0x05,0x20,0x22]
@@ -198,4 +219,4 @@
 # CHECK-TRAP: lui $1, 1                   # encoding: [0x3c,0x01,0x00,0x01]
 # CHECK-TRAP: ori $1, $1, 42405           # encoding: [0x34,0x21,0xa5,0xa5]
 # CHECK-TRAP: div $zero, $5, $1           # encoding: [0x00,0xa1,0x00,0x1a]
-# CHECK-TRAP: mflo  $4                    # encoding: [0x00,0x00,0x20,0x12]
\ No newline at end of file
+# CHECK-TRAP: mflo  $4                    # encoding: [0x00,0x00,0x20,0x12]

Modified: llvm/trunk/test/MC/Mips/macro-divu-bad.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/Mips/macro-divu-bad.s?rev=294960&r1=294959&r2=294960&view=diff
==============================================================================
--- llvm/trunk/test/MC/Mips/macro-divu-bad.s (original)
+++ llvm/trunk/test/MC/Mips/macro-divu-bad.s Mon Feb 13 10:06:48 2017
@@ -8,7 +8,7 @@
 # RUN: FileCheck %s --check-prefix=NOT-R6
 
   .text
-  divu $25, $11
+  divu $25, 11
   # R6: :[[@LINE-1]]:3: error: instruction requires a CPU feature not currently enabled
 
   divu $25, $0

Modified: llvm/trunk/test/MC/Mips/macro-divu.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/Mips/macro-divu.s?rev=294960&r1=294959&r2=294960&view=diff
==============================================================================
--- llvm/trunk/test/MC/Mips/macro-divu.s (original)
+++ llvm/trunk/test/MC/Mips/macro-divu.s Mon Feb 13 10:06:48 2017
@@ -4,22 +4,23 @@
 # RUN:  -mattr=+use-tcc-in-div | FileCheck %s --check-prefix=CHECK-TRAP
 
   divu $25,$11
-# CHECK-NOTRAP: bnez $11, 8               # encoding: [0x15,0x60,0x00,0x02]
+# CHECK-NOTRAP: bnez $11, $tmp0           # encoding: [0x15,0x60,A,A]
+# CHECK-NOTRAP:                           # fixup A - offset: 0, value: ($tmp0)-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: divu $zero, $25, $11      # encoding: [0x03,0x2b,0x00,0x1b]
 # CHECK-NOTRAP: break 7                   # encoding: [0x00,0x07,0x00,0x0d]
+# CHECK-NOTRAP: $tmp0:
 # CHECK-NOTRAP: mflo $25                  # encoding: [0x00,0x00,0xc8,0x12]
 
   divu $24,$12
-# CHECK-NOTRAP: bnez $12, 8               # encoding: [0x15,0x80,0x00,0x02]
+# CHECK-NOTRAP: bnez $12, $tmp1           # encoding: [0x15,0x80,A,A]
+# CHECK-NOTRAP:                           # fixup A - offset: 0, value: ($tmp1)-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: divu $zero, $24, $12      # encoding: [0x03,0x0c,0x00,0x1b]
 # CHECK-NOTRAP: break 7                   # encoding: [0x00,0x07,0x00,0x0d]
+# CHECK-NOTRAP: $tmp1:
 # CHECK-NOTRAP: mflo $24                  # encoding: [0x00,0x00,0xc0,0x12]
 
   divu $25,$0
-# CHECK-NOTRAP: bnez $zero, 8             # encoding: [0x14,0x00,0x00,0x02]
-# CHECK-NOTRAP: divu $zero, $25, $zero    # encoding: [0x03,0x20,0x00,0x1b]
 # CHECK-NOTRAP: break 7                   # encoding: [0x00,0x07,0x00,0x0d]
-# CHECK-NOTRAP: mflo $25                  # encoding: [0x00,0x00,0xc8,0x12]
 
   divu $0,$9
 # CHECK-NOTRAP: divu $zero, $zero, $9     # encoding: [0x00,0x09,0x00,0x1b]
@@ -28,22 +29,18 @@
 # CHECK-NOTRAP: divu $zero, $zero, $zero  # encoding: [0x00,0x00,0x00,0x1b]
 
    divu $4,$5,$6
-# CHECK-NOTRAP: bnez $6, 8                 # encoding: [0x14,0xc0,0x00,0x02]
+# CHECK-NOTRAP: bnez $6, $tmp2             # encoding: [0x14,0xc0,A,A]
+# CHECK-NOTRAP:                            # fixup A - offset: 0, value: ($tmp2)-4, kind: fixup_Mips_PC16
 # CHECK-NOTRAP: divu $zero, $5, $6         # encoding: [0x00,0xa6,0x00,0x1b]
 # CHECK-NOTRAP: break 7                    # encoding: [0x00,0x07,0x00,0x0d]
+# CHECK-NOTRAP: $tmp2:
 # CHECK-NOTRAP: mflo $4                    # encoding: [0x00,0x00,0x20,0x12]
 
    divu $4,$5,$0
-# CHECK-NOTRAP: bnez $zero, 8              # encoding: [0x14,0x00,0x00,0x02]
-# CHECK-NOTRAP: divu $zero, $5, $zero      # encoding: [0x00,0xa0,0x00,0x1b]
 # CHECK-NOTRAP: break 7                    # encoding: [0x00,0x07,0x00,0x0d]
-# CHECK-NOTRAP: mflo $4                    # encoding: [0x00,0x00,0x20,0x12]
 
    divu $4,$0,$0
-# CHECK-NOTRAP: bnez $zero, 8              # encoding: [0x14,0x00,0x00,0x02]
-# CHECK-NOTRAP: divu $zero, $zero, $zero   # encoding: [0x00,0x00,0x00,0x1b]
 # CHECK-NOTRAP: break 7                    # encoding: [0x00,0x07,0x00,0x0d]
-# CHECK-NOTRAP: mflo $4                    # encoding: [0x00,0x00,0x20,0x12]
 
   divu $0, $4, $5
 # CHECK-NOTRAP: divu $zero, $4, $5         # encoding: [0x00,0x85,0x00,0x1b]
@@ -60,8 +57,6 @@
 
   divu $25,$0
 # CHECK-TRAP: teq $zero, $zero, 7          # encoding: [0x00,0x00,0x01,0xf4]
-# CHECK-TRAP: divu $zero, $25, $zero       # encoding: [0x03,0x20,0x00,0x1b]
-# CHECK-TRAP: mflo $25                     # encoding: [0x00,0x00,0xc8,0x12]
 
   divu $0,$9
 # CHECK-TRAP: divu $zero, $zero, $9        # encoding: [0x00,0x09,0x00,0x1b]
@@ -76,8 +71,6 @@
 
   divu $4,$5,$0
 # CHECK-TRAP: teq $zero, $zero, 7          # encoding: [0x00,0x00,0x01,0xf4]
-# CHECK-TRAP: divu $zero, $5, $zero        # encoding: [0x00,0xa0,0x00,0x1b]
-# CHECK-TRAP: mflo $4                      # encoding: [0x00,0x00,0x20,0x12]
 
   divu $4,$0,$0
 # CHECK-TRAP: teq $zero, $zero, 7          # encoding: [0x00,0x00,0x01,0xf4]
@@ -85,4 +78,4 @@
 # CHECK-TRAP: mflo $4                      # encoding: [0x00,0x00,0x20,0x12]
 
   divu $0, $4, $5
-# CHECK-TRAP: divu $zero, $4, $5           # encoding: [0x00,0x85,0x00,0x1b]
\ No newline at end of file
+# CHECK-TRAP: divu $zero, $4, $5           # encoding: [0x00,0x85,0x00,0x1b]




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