diff options
Diffstat (limited to 'compiler/optimizing/nodes.h')
| -rw-r--r-- | compiler/optimizing/nodes.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/compiler/optimizing/nodes.h b/compiler/optimizing/nodes.h index 922696bb5d..4de3f8abb5 100644 --- a/compiler/optimizing/nodes.h +++ b/compiler/optimizing/nodes.h @@ -1011,6 +1011,7 @@ class HBasicBlock : public ArenaObject<kArenaAllocBasicBlock> { // Replace instruction `initial` with `replacement` within this block. void ReplaceAndRemoveInstructionWith(HInstruction* initial, HInstruction* replacement); + void MoveInstructionBefore(HInstruction* insn, HInstruction* cursor); void AddPhi(HPhi* phi); void InsertPhiAfter(HPhi* instruction, HPhi* cursor); // RemoveInstruction and RemovePhi delete a given instruction from the respective @@ -1220,6 +1221,7 @@ class HLoopInformationOutwardIterator : public ValueObject { M(UnresolvedInstanceFieldSet, Instruction) \ M(UnresolvedStaticFieldGet, Instruction) \ M(UnresolvedStaticFieldSet, Instruction) \ + M(Select, Instruction) \ M(StoreLocal, Instruction) \ M(Sub, BinaryOperation) \ M(SuspendCheck, Instruction) \ @@ -5586,6 +5588,41 @@ class HMonitorOperation : public HTemplateInstruction<1> { DISALLOW_COPY_AND_ASSIGN(HMonitorOperation); }; +class HSelect : public HExpression<3> { + public: + HSelect(HInstruction* condition, + HInstruction* true_value, + HInstruction* false_value, + uint32_t dex_pc) + : HExpression(HPhi::ToPhiType(true_value->GetType()), SideEffects::None(), dex_pc) { + DCHECK_EQ(HPhi::ToPhiType(true_value->GetType()), HPhi::ToPhiType(false_value->GetType())); + + // First input must be `true_value` or `false_value` to allow codegens to + // use the SameAsFirstInput allocation policy. We make it `false_value`, so + // that architectures which implement HSelect as a conditional move also + // will not need to invert the condition. + SetRawInputAt(0, false_value); + SetRawInputAt(1, true_value); + SetRawInputAt(2, condition); + } + + HInstruction* GetFalseValue() const { return InputAt(0); } + HInstruction* GetTrueValue() const { return InputAt(1); } + HInstruction* GetCondition() const { return InputAt(2); } + + bool CanBeMoved() const OVERRIDE { return true; } + bool InstructionDataEquals(HInstruction* other ATTRIBUTE_UNUSED) const OVERRIDE { return true; } + + bool CanBeNull() const OVERRIDE { + return GetTrueValue()->CanBeNull() || GetFalseValue()->CanBeNull(); + } + + DECLARE_INSTRUCTION(Select); + + private: + DISALLOW_COPY_AND_ASSIGN(HSelect); +}; + class MoveOperands : public ArenaObject<kArenaAllocMoveOperands> { public: MoveOperands(Location source, |