Revert^2 "Disable write-barrier elimination pass"

This reverts commit 7c1dd6e2d1893f288214413c4b97273980f3aa4a.

Reason for revert: build breakages, using a different number of temps vs the expected (crashing in https://cs.android.com/android/platform/superproject/main/+/main:art/compiler/optimizing/code_generator_x86_64.cc;l=5488;drc=7c1dd6e2d1893f288214413c4b97273980f3aa4a)

Change-Id: I843c039394dd666776ea5bcb5b10b1f47df12d53

1 files changed, 0 insertions, 30 deletions

diff --git a/compiler/optimizing/code_generator.cc b/compiler/optimizing/code_generator.cc
index 0e294b560a..b0e07e32ea 100644
--- a/compiler/optimizing/code_generator.cc
+++ b/compiler/optimizing/code_generator.cc
@@ -158,25 +158,6 @@ ReadBarrierOption CodeGenerator::GetCompilerReadBarrierOption() const {
   return EmitReadBarrier() ? kWithReadBarrier : kWithoutReadBarrier;
 }
 
-bool CodeGenerator::ShouldCheckGCCard(DataType::Type type,
-                                      HInstruction* value,
-                                      WriteBarrierKind write_barrier_kind) const {
-  const CompilerOptions& options = GetCompilerOptions();
-  const bool result =
-      // Check the GC card in debug mode,
-      options.EmitRunTimeChecksInDebugMode() &&
-      // only for CC GC,
-      options.EmitReadBarrier() &&
-      // and if we eliminated the write barrier in WBE.
-      !StoreNeedsWriteBarrier(type, value, write_barrier_kind) &&
-      CodeGenerator::StoreNeedsWriteBarrier(type, value);
-
-  DCHECK_IMPLIES(result, write_barrier_kind == WriteBarrierKind::kDontEmit);
-  DCHECK_IMPLIES(result, !GetGraph()->IsCompilingBaseline());
-
-  return result;
-}
-
 ScopedArenaAllocator* CodeGenerator::GetScopedAllocator() {
   DCHECK(code_generation_data_ != nullptr);
   return code_generation_data_->GetScopedAllocator();
@@ -1627,17 +1608,6 @@ void CodeGenerator::EmitParallelMoves(Location from1,
   GetMoveResolver()->EmitNativeCode(&parallel_move);
 }
 
-bool CodeGenerator::StoreNeedsWriteBarrier(DataType::Type type,
-                                           HInstruction* value,
-                                           WriteBarrierKind write_barrier_kind) const {
-  // Check that null value is not represented as an integer constant.
-  DCHECK_IMPLIES(type == DataType::Type::kReference, !value->IsIntConstant());
-  // Branch profiling currently doesn't support running optimizations.
-  return GetGraph()->IsCompilingBaseline()
-            ? CodeGenerator::StoreNeedsWriteBarrier(type, value)
-            : write_barrier_kind != WriteBarrierKind::kDontEmit;
-}
-
 void CodeGenerator::ValidateInvokeRuntime(QuickEntrypointEnum entrypoint,
                                           HInstruction* instruction,
                                           SlowPathCode* slow_path) {