commit 37f05ef45e0393de812d51261dc293240c17294d
author Fred Shih <ffred@google.com> Wed Jul 16 18:38:08 2014 -0700
committer Fred Shih <ffred@google.com> Mon Aug 25 11:16:53 2014 -0700
tree 7c7793862efa52e1deb42babbdcb652c245ab941
parent e25826e28ea65d9c1aa23f84788a091c677b20c7

Reduced memory usage of primitive fields smaller than 4-bytes

Reduced memory used by byte and boolean fields from 4 bytes down to a
single byte and shorts and chars down to two bytes. Fields are now
arranged as Reference followed by decreasing component sizes, with
fields shuffled forward as needed.

Bug: 8135266
Change-Id: I65eaf31ed27e5bd5ba0c7d4606454b720b074752

compiler/dex/dex_to_dex_compiler.cc

diff --git a/compiler/dex/dex_to_dex_compiler.cc b/compiler/dex/dex_to_dex_compiler.cc
index b9f9437..f9a05c2 100644
--- a/compiler/dex/dex_to_dex_compiler.cc
+++ b/compiler/dex/dex_to_dex_compiler.cc
@@ -121,15 +121,25 @@
         break;
 
       case Instruction::IPUT:
-      case Instruction::IPUT_BOOLEAN:
-      case Instruction::IPUT_BYTE:
-      case Instruction::IPUT_CHAR:
-      case Instruction::IPUT_SHORT:
-        // These opcodes have the same implementation in interpreter so group
-        // them under IPUT_QUICK.
         CompileInstanceFieldAccess(inst, dex_pc, Instruction::IPUT_QUICK, true);
         break;
 
+      case Instruction::IPUT_BOOLEAN:
+        CompileInstanceFieldAccess(inst, dex_pc, Instruction::IPUT_BOOLEAN_QUICK, true);
+        break;
+
+      case Instruction::IPUT_BYTE:
+        CompileInstanceFieldAccess(inst, dex_pc, Instruction::IPUT_BYTE_QUICK, true);
+        break;
+
+      case Instruction::IPUT_CHAR:
+        CompileInstanceFieldAccess(inst, dex_pc, Instruction::IPUT_CHAR_QUICK, true);
+        break;
+
+      case Instruction::IPUT_SHORT:
+        CompileInstanceFieldAccess(inst, dex_pc, Instruction::IPUT_SHORT_QUICK, true);
+        break;
+
       case Instruction::IPUT_WIDE:
         CompileInstanceFieldAccess(inst, dex_pc, Instruction::IPUT_WIDE_QUICK, true);
         break;