Subzero. WASM. Additional progress.

src/IceInst.h

Index: src/IceInst.h
diff --git a/src/IceInst.h b/src/IceInst.h
index 1b49419eaab27f5e10001cddf382e124b59fe928..db273aa500c7f17e8eadb38bae559aaabe9d7a8c 100644
--- a/src/IceInst.h
+++ b/src/IceInst.h
@@ -62,6 +62,7 @@ public:
     Store,
     Switch,
     Assign,       // not part of LLVM/PNaCl bitcode
+    Breakpoint,   // not part of LLVM/PNaCl bitcode
     BundleLock,   // not part of LLVM/PNaCl bitcode
     BundleUnlock, // not part of LLVM/PNaCl bitcode
     FakeDef,      // not part of LLVM/PNaCl bitcode
@@ -976,6 +977,29 @@ private:
   GlobalString FuncName;
 };
 
+/// This instruction inserts an unconditional breakpoint.
+///
+/// On x86, this assembles into an INT 3 instruction.
+///
+/// This instruction is primarily meant for debugging the code generator.
+class InstBreakpoint : public InstHighLevel {
+public:
+  InstBreakpoint() = delete;
+  InstBreakpoint(const InstBreakpoint &) = delete;
+  InstBreakpoint &operator=(const InstBreakpoint &) = delete;
+
+  InstBreakpoint(Cfg *Func);
+
+public:
+  static InstBreakpoint *create(Cfg *Func) {
+    return new (Func->allocate<InstBreakpoint>()) InstBreakpoint(Func);
+  }
+
+  static bool classof(const Inst *Instr) {
+    return Instr->getKind() == Breakpoint;
+  }
+};
+
 /// The Target instruction is the base class for all target-specific
 /// instructions.
 class InstTarget : public Inst {