diff options
| author | 2015-08-24 11:21:42 -0700 | |
|---|---|---|
| committer | 2015-10-15 01:36:34 -0700 | |
| commit | 589dac7f0ce078d19aad7e35bb0195c47ddf01d2 (patch) | |
| tree | 5c77fb845997b21ce1aa97b1fa176c64a76e14f1 /compiler/optimizing/builder.cc | |
| parent | d2e0dd179fd2e8c6c820194e187fc5e9164154ff (diff) | |
load store elimination.
This adds a pass to eliminate some unnecessary heap loads/stores. It
first collects heap locations and then tracks values stored to those heap
locations. Alias analysis is done based on offset, type, singleton,
pre-existence, etc.
Change-Id: I11a9d8ef20d1b2f245607eb25118e9aff9be472a
Diffstat (limited to 'compiler/optimizing/builder.cc')
| -rw-r--r-- | compiler/optimizing/builder.cc | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/compiler/optimizing/builder.cc b/compiler/optimizing/builder.cc index 21540e8ed7..044c4cef11 100644 --- a/compiler/optimizing/builder.cc +++ b/compiler/optimizing/builder.cc @@ -1232,12 +1232,14 @@ bool HGraphBuilder::BuildInstanceFieldAccess(const Instruction& instruction, field_index, dex_pc); } else { + uint16_t class_def_index = resolved_field->GetDeclaringClass()->GetDexClassDefIndex(); field_set = new (arena_) HInstanceFieldSet(null_check, value, field_type, resolved_field->GetOffset(), resolved_field->IsVolatile(), field_index, + class_def_index, *dex_file_, dex_compilation_unit_->GetDexCache(), dex_pc); @@ -1252,11 +1254,13 @@ bool HGraphBuilder::BuildInstanceFieldAccess(const Instruction& instruction, field_index, dex_pc); } else { + uint16_t class_def_index = resolved_field->GetDeclaringClass()->GetDexClassDefIndex(); field_get = new (arena_) HInstanceFieldGet(null_check, field_type, resolved_field->GetOffset(), resolved_field->IsVolatile(), field_index, + class_def_index, *dex_file_, dex_compilation_unit_->GetDexCache(), dex_pc); @@ -1398,6 +1402,8 @@ bool HGraphBuilder::BuildStaticFieldAccess(const Instruction& instruction, cls = new (arena_) HClinitCheck(constant, dex_pc); current_block_->AddInstruction(cls); } + + uint16_t class_def_index = resolved_field->GetDeclaringClass()->GetDexClassDefIndex(); if (is_put) { // We need to keep the class alive before loading the value. Temporaries temps(graph_); @@ -1410,6 +1416,7 @@ bool HGraphBuilder::BuildStaticFieldAccess(const Instruction& instruction, resolved_field->GetOffset(), resolved_field->IsVolatile(), field_index, + class_def_index, *dex_file_, dex_cache_, dex_pc)); @@ -1419,6 +1426,7 @@ bool HGraphBuilder::BuildStaticFieldAccess(const Instruction& instruction, resolved_field->GetOffset(), resolved_field->IsVolatile(), field_index, + class_def_index, *dex_file_, dex_cache_, dex_pc)); |