commit af543476661966c83a1e1c4db4fbef0d9a2d3afa
author TDYa127 <tdy@google.com> Mon May 28 21:49:23 2012 -0700
committer Shih-wei Liao <sliao@google.com> Sun Jun 03 08:59:14 2012 -0700
tree 25a85124f4f3ecc96292d8d9d74d70eb62be1f22
parent cb8f890e0723c4c9379aaf5c58bc80096c043f21

Lazy pushing shadow frame.

Function:
aget v0, v1, v2
return v0

Original:
push shadow frame;
if (null pointer)        { throw; pop shadow frame; unwind; }
if (index out of bounds) { throw; pop shadow frame; unwind; }
load from array;
pop shadow frame;
return;

New:
if (null pointer)        { push shadow frame; throw; pop shadow frame; unwind; }
if (index out of bounds) { push shadow frame; throw; pop shadow frame; unwind; }
load from array;
return;

Change-Id: I7fc0ff12b9a5454f8e1491b9ce1cdef3afcbed23

src/compiler_llvm/method_compiler.h

diff --git a/src/compiler_llvm/method_compiler.h b/src/compiler_llvm/method_compiler.h
index 9e4c81b..44ab863 100644
--- a/src/compiler_llvm/method_compiler.h
+++ b/src/compiler_llvm/method_compiler.h
@@ -264,6 +264,7 @@
   void EmitMarkGCCard(llvm::Value* value, llvm::Value* target_addr);
 
   // Shadow frame helper function
+  void EmitPushShadowFrame(bool is_inline);
   void EmitPopShadowFrame();
   void EmitUpdateDexPC(uint32_t dex_pc);
 
@@ -430,6 +431,7 @@
     bool has_invoke;
     bool need_shadow_frame_entry;
     bool need_shadow_frame;
+    bool lazy_push_shadow_frame;
   };
   MethodInfo method_info_;
 
@@ -474,6 +476,9 @@
   llvm::AllocaInst* jvalue_temp_;
   llvm::Value* old_shadow_frame_;
 
+  llvm::Value* already_pushed_shadow_frame_;
+  uint32_t shadow_frame_size_;
+
   uint16_t elf_func_idx_;
 };