Create a scoped arena allocator and use that for LVN.
This saves more than 0.5s of boot.oat compilation time
on Nexus 5.
TODO: Move other stuff to the scoped allocator. This CL
alone increases the peak memory allocation. By reusing
the memory for other parts of the compilation we should
reduce this overhead.
Change-Id: Ifbc00aab4f3afd0000da818dfe68b96713824a08
diff --git a/compiler/dex/quick/mir_to_lir-inl.h b/compiler/dex/quick/mir_to_lir-inl.h
index c2d12f6..8b1f81d 100644
--- a/compiler/dex/quick/mir_to_lir-inl.h
+++ b/compiler/dex/quick/mir_to_lir-inl.h
@@ -45,7 +45,7 @@
inline LIR* Mir2Lir::RawLIR(DexOffset dalvik_offset, int opcode, int op0,
int op1, int op2, int op3, int op4, LIR* target) {
- LIR* insn = static_cast<LIR*>(arena_->Alloc(sizeof(LIR), ArenaAllocator::kAllocLIR));
+ LIR* insn = static_cast<LIR*>(arena_->Alloc(sizeof(LIR), kArenaAllocLIR));
insn->dalvik_offset = dalvik_offset;
insn->opcode = opcode;
insn->operands[0] = op0;