Use isNull instead of getNode() to test for existence of a node, this is cheaper.

[oota-llvm.git] / lib / Target / X86 / PeepholeOptimizer.cpp

diff --git a/lib/Target/X86/PeepholeOptimizer.cpp b/lib/Target/X86/PeepholeOptimizer.cpp
index 27baa521e84df5280e42a71c8ae5e3e008f4df4b..4d52b74d3fc9521cffd8dde21ec55a843301e018 100644 (file)
--- a/lib/Target/X86/PeepholeOptimizer.cpp
+++ b/lib/Target/X86/PeepholeOptimizer.cpp
@@ -154,7 +154,10 @@ bool PH::PeepholeOptimize(MachineBasicBlock &MBB,
 
 
   case X86::ADDmi16:  case X86::ADDmi32:
+  case X86::SUBmi16:  case X86::SUBmi32:
   case X86::ANDmi16:  case X86::ANDmi32:
+  case X86::ORmi16:  case X86::ORmi32:
+  case X86::XORmi16:  case X86::XORmi32:
     assert(MI->getNumOperands() == 5 && "These should all have 5 operands!");
     if (MI->getOperand(4).isImmediate()) {
       int Val = MI->getOperand(4).getImmedValue();
@@ -165,8 +168,14 @@ bool PH::PeepholeOptimize(MachineBasicBlock &MBB,
         default: assert(0 && "Unknown opcode value!");
         case X86::ADDmi16:  Opcode = X86::ADDmi16b; break;
         case X86::ADDmi32:  Opcode = X86::ADDmi32b; break;
+        case X86::SUBmi16:  Opcode = X86::SUBmi16b; break;
+        case X86::SUBmi32:  Opcode = X86::SUBmi32b; break;
         case X86::ANDmi16:  Opcode = X86::ANDmi16b; break;
         case X86::ANDmi32:  Opcode = X86::ANDmi32b; break;
+        case X86::ORmi16:   Opcode = X86::ORmi16b; break;
+        case X86::ORmi32:   Opcode = X86::ORmi32b; break;
+        case X86::XORmi16:  Opcode = X86::XORmi16b; break;
+        case X86::XORmi32:  Opcode = X86::XORmi32b; break;
         }
         unsigned R0 = MI->getOperand(0).getReg();
         unsigned Scale = MI->getOperand(1).getImmedValue();