Implement int negate instruction in the optimizing compiler.
- Add support for the neg-int (integer two's complement
negate) instruction in the optimizing compiler.
- Add a HNeg node type for control-flow graphs and an
intermediate HUnaryOperation base class.
- Generate ARM, x86 and x86-64 code for integer HNeg nodes.
Change-Id: I72fd3e1e5311a75c38a8cb665a9211a20325a42e
diff --git a/compiler/optimizing/nodes.h b/compiler/optimizing/nodes.h
index 7bb71b6..26d9bd1 100644
--- a/compiler/optimizing/nodes.h
+++ b/compiler/optimizing/nodes.h
@@ -503,10 +503,12 @@
M(Temporary, Instruction) \
M(SuspendCheck, Instruction) \
M(Mul, BinaryOperation) \
+ M(Neg, UnaryOperation)
#define FOR_EACH_INSTRUCTION(M) \
FOR_EACH_CONCRETE_INSTRUCTION(M) \
M(Constant, Instruction) \
+ M(UnaryOperation, Instruction) \
M(BinaryOperation, Instruction) \
M(Invoke, Instruction)
@@ -1086,6 +1088,25 @@
DISALLOW_COPY_AND_ASSIGN(HIf);
};
+class HUnaryOperation : public HExpression<1> {
+ public:
+ HUnaryOperation(Primitive::Type result_type, HInstruction* input)
+ : HExpression(result_type, SideEffects::None()) {
+ SetRawInputAt(0, input);
+ }
+
+ HInstruction* GetInput() const { return InputAt(0); }
+ Primitive::Type GetResultType() const { return GetType(); }
+
+ virtual bool CanBeMoved() const { return true; }
+ virtual bool InstructionDataEquals(HInstruction* other) const { return true; }
+
+ DECLARE_INSTRUCTION(UnaryOperation);
+
+ private:
+ DISALLOW_COPY_AND_ASSIGN(HUnaryOperation);
+};
+
class HBinaryOperation : public HExpression<2> {
public:
HBinaryOperation(Primitive::Type result_type,
@@ -1518,6 +1539,17 @@
DISALLOW_COPY_AND_ASSIGN(HNewInstance);
};
+class HNeg : public HUnaryOperation {
+ public:
+ explicit HNeg(Primitive::Type result_type, HInstruction* input)
+ : HUnaryOperation(result_type, input) {}
+
+ DECLARE_INSTRUCTION(Neg);
+
+ private:
+ DISALLOW_COPY_AND_ASSIGN(HNeg);
+};
+
class HAdd : public HBinaryOperation {
public:
HAdd(Primitive::Type result_type, HInstruction* left, HInstruction* right)