diff options
Diffstat (limited to 'compiler/optimizing/code_generator.cc')
| -rw-r--r-- | compiler/optimizing/code_generator.cc | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/compiler/optimizing/code_generator.cc b/compiler/optimizing/code_generator.cc index 3231c99a7b..2a9a7b37ab 100644 --- a/compiler/optimizing/code_generator.cc +++ b/compiler/optimizing/code_generator.cc @@ -25,6 +25,7 @@ #include "gc_map_builder.h" #include "leb128.h" #include "mapping_table.h" +#include "ssa_liveness_analysis.h" #include "utils/assembler.h" #include "verifier/dex_gc_map.h" #include "vmap_table.h" @@ -518,4 +519,23 @@ void CodeGenerator::RestoreLiveRegisters(LocationSummary* locations) { } } +void CodeGenerator::ClearSpillSlotsFromLoopPhisInStackMap(HSuspendCheck* suspend_check) const { + LocationSummary* locations = suspend_check->GetLocations(); + HBasicBlock* block = suspend_check->GetBlock(); + DCHECK(block->GetLoopInformation()->GetSuspendCheck() == suspend_check); + DCHECK(block->IsLoopHeader()); + + for (HInstructionIterator it(block->GetPhis()); !it.Done(); it.Advance()) { + HInstruction* current = it.Current(); + LiveInterval* interval = current->GetLiveInterval(); + // We only need to clear bits of loop phis containing objects and allocated in register. + // Loop phis allocated on stack already have the object in the stack. + if (current->GetType() == Primitive::kPrimNot + && interval->HasRegister() + && interval->HasSpillSlot()) { + locations->ClearStackBit(interval->GetSpillSlot() / kVRegSize); + } + } +} + } // namespace art |