Add dequickening support.

Both vdex and BCI require full dequickening support. This
change implements dequickening by using the existing encoded
quickening, and adds the checkcast quickening to that encoding.

bug: 30937355
bug: 32369913
Test: dex_to_dex_decompiler_test.cc test-art-host

Change-Id: Ie95f46946d59b28157d6e47dcf4a859be032d1c3
diff --git a/compiler/dex/dex_to_dex_compiler.cc b/compiler/dex/dex_to_dex_compiler.cc
index 9c1d72b..cf69f46 100644
--- a/compiler/dex/dex_to_dex_compiler.cc
+++ b/compiler/dex/dex_to_dex_compiler.cc
@@ -233,6 +233,8 @@
                  << " by replacing it with 2 NOPs at dex pc "
                  << StringPrintf("0x%x", dex_pc) << " in method "
                  << GetDexFile().PrettyMethod(unit_.GetDexMethodIndex(), true);
+  quickened_info_.push_back(QuickenedInfo(dex_pc, inst->VRegA_21c()));
+  quickened_info_.push_back(QuickenedInfo(dex_pc, inst->VRegB_21c()));
   // We are modifying 4 consecutive bytes.
   inst->SetOpcode(Instruction::NOP);
   inst->SetVRegA_10x(0u);  // keep compliant with verifier.