Fine tuning the induction analysis.
Rationale:
Based on some self-imposed "blind" testing, improved
the induction variable analysis for typical cases
that provide a bit more elaborate HIR.
Test: test-art-host
Change-Id: I6e6bbf99928c29973178fa48f3942b14bf069944
diff --git a/compiler/optimizing/induction_var_analysis.h b/compiler/optimizing/induction_var_analysis.h
index 4720f2d..293aa70 100644
--- a/compiler/optimizing/induction_var_analysis.h
+++ b/compiler/optimizing/induction_var_analysis.h
@@ -115,7 +115,7 @@
InductionInfo* op_a;
InductionInfo* op_b;
HInstruction* fetch;
- Primitive::Type type; // precision of induction
+ Primitive::Type type; // precision of operation
};
bool IsVisitedNode(HInstruction* instruction) const {
@@ -160,14 +160,17 @@
InductionInfo* RotatePeriodicInduction(InductionInfo* induction, InductionInfo* last);
// Transfer operations.
- InductionInfo* TransferPhi(HLoopInformation* loop, HInstruction* phi, size_t input_index);
+ InductionInfo* TransferPhi(HLoopInformation* loop,
+ HInstruction* phi,
+ size_t input_index,
+ size_t adjust_input_size);
InductionInfo* TransferAddSub(InductionInfo* a, InductionInfo* b, InductionOp op);
InductionInfo* TransferNeg(InductionInfo* a);
InductionInfo* TransferMul(InductionInfo* a, InductionInfo* b);
InductionInfo* TransferCnv(InductionInfo* a, Primitive::Type from, Primitive::Type to);
// Solvers.
- InductionInfo* SolvePhi(HInstruction* phi, size_t input_index);
+ InductionInfo* SolvePhi(HInstruction* phi, size_t input_index, size_t adjust_input_size);
InductionInfo* SolvePhiAllInputs(HLoopInformation* loop,
HInstruction* entry_phi,
HInstruction* phi);
@@ -220,7 +223,9 @@
InductionInfo* LookupInfo(HLoopInformation* loop, HInstruction* instruction);
InductionInfo* CreateConstant(int64_t value, Primitive::Type type);
InductionInfo* CreateSimplifiedInvariant(InductionOp op, InductionInfo* a, InductionInfo* b);
- HInstruction* GetMultConstantForShift(HLoopInformation* loop, HInstruction* instruction);
+ HInstruction* GetShiftConstant(HLoopInformation* loop,
+ HInstruction* instruction,
+ InductionInfo* initial);
void AssignCycle(HPhi* phi);
ArenaSet<HInstruction*>* LookupCycle(HPhi* phi);