Generate more stack maps during native debugging.
Generate extra stack map at the start of each java statement.
The stack maps are later translated to DWARF which allows
LLDB to set breakpoints and view local variables.
Change-Id: If00ab875513308e4a1399d1e12e0fe8934a6f0c3
diff --git a/compiler/optimizing/nodes.h b/compiler/optimizing/nodes.h
index 00820a6..db3e969 100644
--- a/compiler/optimizing/nodes.h
+++ b/compiler/optimizing/nodes.h
@@ -1066,6 +1066,7 @@
M(MemoryBarrier, Instruction) \
M(MonitorOperation, Instruction) \
M(Mul, BinaryOperation) \
+ M(NativeDebugInfo, Instruction) \
M(Neg, UnaryOperation) \
M(NewArray, Instruction) \
M(NewInstance, Instruction) \
@@ -4872,6 +4873,23 @@
DISALLOW_COPY_AND_ASSIGN(HSuspendCheck);
};
+// Pseudo-instruction which provides the native debugger with mapping information.
+// It ensures that we can generate line number and local variables at this point.
+class HNativeDebugInfo : public HTemplateInstruction<0> {
+ public:
+ explicit HNativeDebugInfo(uint32_t dex_pc)
+ : HTemplateInstruction<0>(SideEffects::None(), dex_pc) {}
+
+ bool NeedsEnvironment() const OVERRIDE {
+ return true;
+ }
+
+ DECLARE_INSTRUCTION(NativeDebugInfo);
+
+ private:
+ DISALLOW_COPY_AND_ASSIGN(HNativeDebugInfo);
+};
+
/**
* Instruction to load a Class object.
*/