Subzero: Add Non-SFI support for x86-32.

src/IceInstX86Base.h

Index: src/IceInstX86Base.h
diff --git a/src/IceInstX86Base.h b/src/IceInstX86Base.h
index 8cefabb3afdeea7ff2d9e0a8952fc7ded8365ab2..c4a9fe4cbcae6e40bceae7581010677c08c03d41 100644
--- a/src/IceInstX86Base.h
+++ b/src/IceInstX86Base.h
@@ -101,6 +101,7 @@ template <typename TraitsType> struct InstImpl {
       FakeRMW,
       Fld,
       Fstp,
+      GetIP,
       Icmp,
       Idiv,
       Imul,
@@ -265,6 +266,26 @@ template <typename TraitsType> struct InstImpl {
                    InstArithmetic::OpKind Op, Variable *Beacon);
   };
 
+  class InstX86GetIP final : public InstX86Base {
+    InstX86GetIP() = delete;
+    InstX86GetIP(const InstX86GetIP &) = delete;
+    InstX86GetIP &operator=(const InstX86GetIP &) = delete;
+
+  public:
+    static InstX86GetIP *create(Cfg *Func, Variable *Dest) {
+      return new (Func->allocate<InstX86GetIP>()) InstX86GetIP(Func, Dest);
+    }
+    void emit(const Cfg *Func) const override;
+    void emitIAS(const Cfg *Func) const override;
+    void dump(const Cfg *Func) const override;
+    static bool classof(const Inst *Inst) {
+      return InstX86Base::isClassof(Inst, InstX86Base::GetIP);
+    }
+
+  private:
+    InstX86GetIP(Cfg *Func, Variable *Dest);
+  };
+
   /// InstX86Label represents an intra-block label that is the target of an
   /// intra-block branch. The offset between the label and the branch must be
   /// fit into one byte (considered "near"). These are used for lowering i1
@@ -2771,6 +2792,7 @@ template <typename TraitsType> struct InstImpl {
 ///
 /// using Insts = ::Ice::X86NAMESPACE::Insts<TraitsType>;
 template <typename TraitsType> struct Insts {
+  using GetIP = typename InstImpl<TraitsType>::InstX86GetIP;
   using FakeRMW = typename InstImpl<TraitsType>::InstX86FakeRMW;
   using Label = typename InstImpl<TraitsType>::InstX86Label;