Add more code info size dumping to oatdump

Helps break down where oat bytes are being used, example output on
a large app:

OAT FILE STATS:
Dumping cumulative use of 95784720 accounted bytes
Code                            = 68894196 (72% of total)
QuickMethodHeader               =  3071080 ( 3% of total)
CodeInfoEncoding                =  1226080 ( 1% of total)
CodeInfoLocationCatalog         =  1005716 ( 1% of total)
CodeInfoDexRegisterMap          =  5813389 ( 6% of total)
CodeInfoInlineInfo              =  2391251 ( 2% of total)
CodeInfoStackMap                = 13383008 (14% of total)
  StackMapNativePc              =  1607888 (12% of stack map)
  StackMapDexPcEncoding         =  1116724 ( 8% of stack map)
  StackMapDexRegisterMap        =  1277680 (10% of stack map)
  StackMapInlineInfo            =  1082720 ( 8% of stack map)
  StackMapRegisterMaskEncoding  =  5104960 (38% of stack map)
  StackMapMask                  =  3193034 (24% of stack map)
  StackMapOther                 =        0 ( 0% of stack map)

Test: test-art-host, oatdump

Bug: 34621054

Change-Id: I5daf0f1308d126b6a30928f523c6051585f1491f

1 files changed, 11 insertions, 0 deletions

diff --git a/runtime/stack_map.h b/runtime/stack_map.h
index 28c4b88fb0..cd9a3f04cf 100644
--- a/runtime/stack_map.h
+++ b/runtime/stack_map.h
@@ -1182,6 +1182,17 @@ class CodeInfo {
     }
   }
 
+  size_t GetDexRegisterMapsSize(const CodeInfoEncoding& encoding,
+                                uint32_t number_of_dex_registers) const {
+    size_t total = 0;
+    for (size_t i = 0, e = GetNumberOfStackMaps(encoding); i < e; ++i) {
+      StackMap stack_map = GetStackMapAt(i, encoding);
+      DexRegisterMap map(GetDexRegisterMapOf(stack_map, encoding, number_of_dex_registers));
+      total += map.Size();
+    }
+    return total;
+  }
+
   // Return the `DexRegisterMap` pointed by `inline_info` at depth `depth`.
   DexRegisterMap GetDexRegisterMapAtDepth(uint8_t depth,
                                           InlineInfo inline_info,