[llvm] r302033 - [Hexagon] Handle J2_jumptpt and J2_jumpfpt in HexagonInstrInfo

[Krzysztof Parzyszek via llvm-commits]

Author: kparzysz
Date: Wed May  3 10:30:46 2017
New Revision: 302033

URL: http://llvm.org/viewvc/llvm-project?rev=302033&view=rev
Log:
[Hexagon] Handle J2_jumptpt and J2_jumpfpt in HexagonInstrInfo

Modified:
    llvm/trunk/lib/Target/Hexagon/HexagonInstrInfo.cpp

Modified: llvm/trunk/lib/Target/Hexagon/HexagonInstrInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Hexagon/HexagonInstrInfo.cpp?rev=302033&r1=302032&r2=302033&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Hexagon/HexagonInstrInfo.cpp (original)
+++ llvm/trunk/lib/Target/Hexagon/HexagonInstrInfo.cpp Wed May  3 10:30:46 2017
@@ -3061,12 +3061,14 @@ bool HexagonInstrInfo::predCanBeUsedAsDo
 }
 
 bool HexagonInstrInfo::PredOpcodeHasJMP_c(unsigned Opcode) const {
-  return (Opcode == Hexagon::J2_jumpt)      ||
-         (Opcode == Hexagon::J2_jumpf)      ||
-         (Opcode == Hexagon::J2_jumptnew)   ||
-         (Opcode == Hexagon::J2_jumpfnew)   ||
-         (Opcode == Hexagon::J2_jumptnewpt) ||
-         (Opcode == Hexagon::J2_jumpfnewpt);
+  return Opcode == Hexagon::J2_jumpt      ||
+         Opcode == Hexagon::J2_jumptpt    ||
+         Opcode == Hexagon::J2_jumpf      ||
+         Opcode == Hexagon::J2_jumpfpt    ||
+         Opcode == Hexagon::J2_jumptnew   ||
+         Opcode == Hexagon::J2_jumpfnew   ||
+         Opcode == Hexagon::J2_jumptnewpt ||
+         Opcode == Hexagon::J2_jumpfnewpt;
 }
 
 bool HexagonInstrInfo::predOpcodeHasNot(ArrayRef<MachineOperand> Cond) const {
@@ -3613,11 +3615,11 @@ int HexagonInstrInfo::getDotNewPredOp(co
 }
 
 int HexagonInstrInfo::getDotOldOp(const MachineInstr &MI) const {
+  const MachineFunction &MF = *MI.getParent()->getParent();
+  const HexagonSubtarget &HST = MF.getSubtarget<HexagonSubtarget>();
   int NewOp = MI.getOpcode();
   if (isPredicated(NewOp) && isPredicatedNew(NewOp)) { // Get predicate old form
     NewOp = Hexagon::getPredOldOpcode(NewOp);
-    const MachineFunction &MF = *MI.getParent()->getParent();
-    const HexagonSubtarget &HST = MF.getSubtarget<HexagonSubtarget>();
     // All Hexagon architectures have prediction bits on dot-new branches,
     // but only Hexagon V60+ has prediction bits on dot-old ones. Make sure
     // to pick the right opcode when converting back to dot-old.
@@ -3645,6 +3647,21 @@ int HexagonInstrInfo::getDotOldOp(const
     NewOp = Hexagon::getNonNVStore(NewOp);
     assert(NewOp >= 0 && "Couldn't change new-value store to its old form.");
   }
+
+  if (HST.hasV60TOps())
+    return NewOp;
+
+  // Subtargets prior to V60 didn't support 'taken' forms of predicated jumps.
+  switch (NewOp) {
+  case Hexagon::J2_jumpfpt:
+    return Hexagon::J2_jumpf;
+  case Hexagon::J2_jumptpt:
+    return Hexagon::J2_jumpt;
+  case Hexagon::J2_jumprfpt:
+    return Hexagon::J2_jumprf;
+  case Hexagon::J2_jumprtpt:
+    return Hexagon::J2_jumprt;
+  }
   return NewOp;
 }