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

1 files changed, 41 insertions, 0 deletions

diff --git a/compiler/optimizing/code_generator_x86_64.cc b/compiler/optimizing/code_generator_x86_64.cc
index 5fa930512b..0105231513 100644
--- a/compiler/optimizing/code_generator_x86_64.cc
+++ b/compiler/optimizing/code_generator_x86_64.cc
@@ -933,6 +933,47 @@ void InstructionCodeGeneratorX86_64::VisitInvokeVirtual(HInvokeVirtual* invoke)
   codegen_->RecordPcInfo(invoke, invoke->GetDexPc());
 }
 
+void LocationsBuilderX86_64::VisitNeg(HNeg* neg) {
+  LocationSummary* locations =
+      new (GetGraph()->GetArena()) LocationSummary(neg, LocationSummary::kNoCall);
+  switch (neg->GetResultType()) {
+    case Primitive::kPrimInt:
+      locations->SetInAt(0, Location::RequiresRegister());
+      locations->SetOut(Location::SameAsFirstInput());
+      break;
+
+    case Primitive::kPrimLong:
+    case Primitive::kPrimFloat:
+    case Primitive::kPrimDouble:
+      LOG(FATAL) << "Not yet implemented neg type " << neg->GetResultType();
+      break;
+
+    default:
+      LOG(FATAL) << "Unexpected neg type " << neg->GetResultType();
+  }
+}
+
+void InstructionCodeGeneratorX86_64::VisitNeg(HNeg* neg) {
+  LocationSummary* locations = neg->GetLocations();
+  Location out = locations->Out();
+  Location in = locations->InAt(0);
+  switch (neg->GetResultType()) {
+    case Primitive::kPrimInt:
+      DCHECK(in.IsRegister());
+      __ negl(out.As<CpuRegister>());
+      break;
+
+    case Primitive::kPrimLong:
+    case Primitive::kPrimFloat:
+    case Primitive::kPrimDouble:
+      LOG(FATAL) << "Not yet implemented neg type " << neg->GetResultType();
+      break;
+
+    default:
+      LOG(FATAL) << "Unexpected neg type " << neg->GetResultType();
+  }
+}
+
 void LocationsBuilderX86_64::VisitAdd(HAdd* add) {
   LocationSummary* locations =
       new (GetGraph()->GetArena()) LocationSummary(add, LocationSummary::kNoCall);