Thumb2 Backend: Make arithmetic instructions set condition codes by default

src/arm/lithium-codegen-arm.cc

Index: src/arm/lithium-codegen-arm.cc
diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index 343b0322f771e2c1ef5af6e3ae91d07be0e042e9..dbcf4e4157d3f0399d88ddb80927ae6d527b625f 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -1818,7 +1818,7 @@ void LCodeGen::DoSubI(LSubI* instr) {
   LOperand* right = instr->right();
   LOperand* result = instr->result();
   bool can_overflow = instr->hydrogen()->CheckFlag(HValue::kCanOverflow);
-  SBit set_cond = can_overflow ? SetCC : LeaveCC;
+  SBitMode set_cond = can_overflow ? SetCC : DontCareCC;
 
   if (right->IsStackSlot() || right->IsArgument()) {
     Register right_reg = EmitLoadRegister(right, ip);
@@ -1839,7 +1839,7 @@ void LCodeGen::DoRSubI(LRSubI* instr) {
   LOperand* right = instr->right();
   LOperand* result = instr->result();
   bool can_overflow = instr->hydrogen()->CheckFlag(HValue::kCanOverflow);
-  SBit set_cond = can_overflow ? SetCC : LeaveCC;
+  SBitMode set_cond = can_overflow ? SetCC : DontCareCC;
 
   if (right->IsStackSlot() || right->IsArgument()) {
     Register right_reg = EmitLoadRegister(right, ip);
@@ -2016,7 +2016,7 @@ void LCodeGen::DoAddI(LAddI* instr) {
   LOperand* right = instr->right();
   LOperand* result = instr->result();
   bool can_overflow = instr->hydrogen()->CheckFlag(HValue::kCanOverflow);
-  SBit set_cond = can_overflow ? SetCC : LeaveCC;
+  SBitMode set_cond = can_overflow ? SetCC : DontCareCC;
 
   if (right->IsStackSlot() || right->IsArgument()) {
     Register right_reg = EmitLoadRegister(right, ip);
@@ -2863,7 +2863,7 @@ void LCodeGen::DoDeferredInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr,
   Label before_push_delta;
   __ bind(&before_push_delta);
   __ BlockConstPoolFor(kAdditionalDelta);
-  __ mov(temp, Operand(delta));
+  __ movw(temp, delta);
   // The mov above can generate one or two instructions. The delta was computed
   // for two instructions, so we need to pad here in case of one instruction.
   if (masm_->SizeOfCodeGeneratedSince(&before_push_delta) != 8) {
@@ -3425,7 +3425,7 @@ void LCodeGen::DoArgumentsLength(LArgumentsLength* instr) {
 
   // If no arguments adaptor frame the number of arguments is fixed.
   __ cmp(fp, elem);
-  __ mov(result, Operand(scope()->num_parameters()));
+  __ mov(result, Operand(scope()->num_parameters()), LeaveCC);
   __ b(eq, &done);
 
   // Arguments adaptor frame present. Get argument length from there.