Jacek Caban : jscript: Replaced OP_ident with static binding when possible.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 983bbab5315b55d15dd3473e3ecd1db9d8dca8bc
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=983bbab5315b55d15dd3473e3ecd1db9d8dca8bc

Author: Jacek Caban <jacek at codeweavers.com>
Date:   Thu Aug  4 13:40:44 2016 +0200

jscript: Replaced OP_ident with static binding when possible.

Signed-off-by: Jacek Caban <jacek at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/jscript/compile.c | 10 +++++++++-
 dlls/jscript/engine.c  | 51 +++++++++++++++++++++++++++++++++++++-------------
 dlls/jscript/engine.h  |  1 +
 3 files changed, 48 insertions(+), 14 deletions(-)

diff --git a/dlls/jscript/compile.c b/dlls/jscript/compile.c
index d894b98..a1b2207 100644
--- a/dlls/jscript/compile.c
+++ b/dlls/jscript/compile.c
@@ -434,6 +434,14 @@ static HRESULT emit_identifier_ref(compiler_ctx_t *ctx, const WCHAR *identifier,
     return push_instr_bstr_uint(ctx, OP_identid, identifier, flags);
 }
 
+static HRESULT emit_identifier(compiler_ctx_t *ctx, const WCHAR *identifier)
+{
+    int local_ref;
+    if(bind_local(ctx, identifier, &local_ref))
+        return push_instr_int(ctx, OP_local, local_ref);
+    return push_instr_bstr(ctx, OP_ident, identifier);
+}
+
 static HRESULT compile_memberid_expression(compiler_ctx_t *ctx, expression_t *expr, unsigned flags)
 {
     HRESULT hres = S_OK;
@@ -994,7 +1002,7 @@ static HRESULT compile_expression(compiler_ctx_t *ctx, expression_t *expr, BOOL
         hres = compile_binary_expression(ctx, (binary_expression_t*)expr, OP_gteq);
         break;
     case EXPR_IDENT:
-        hres = push_instr_bstr(ctx, OP_ident, ((identifier_expression_t*)expr)->identifier);
+        hres = emit_identifier(ctx, ((identifier_expression_t*)expr)->identifier);
         break;
     case EXPR_IN:
         hres = compile_binary_expression(ctx, (binary_expression_t*)expr, OP_in);
diff --git a/dlls/jscript/engine.c b/dlls/jscript/engine.c
index 2f74d8a..afa2b4b 100644
--- a/dlls/jscript/engine.c
+++ b/dlls/jscript/engine.c
@@ -1225,6 +1225,26 @@ static HRESULT interp_identifier_ref(script_ctx_t *ctx, BSTR identifier, unsigne
     return stack_push_exprval(ctx, &exprval);
 }
 
+static HRESULT identifier_value(script_ctx_t *ctx, BSTR identifier)
+{
+    exprval_t exprval;
+    jsval_t v;
+    HRESULT hres;
+
+    hres = identifier_eval(ctx, identifier, &exprval);
+    if(FAILED(hres))
+        return hres;
+
+    if(exprval.type == EXPRVAL_INVALID)
+        return throw_type_error(ctx, exprval.u.hres, identifier);
+
+    hres = exprval_to_value(ctx, &exprval, &v);
+    if(FAILED(hres))
+        return hres;
+
+    return stack_push(ctx, v);
+}
+
 static HRESULT interp_local_ref(script_ctx_t *ctx)
 {
     const int arg = get_op_int(ctx, 0);
@@ -1242,28 +1262,33 @@ static HRESULT interp_local_ref(script_ctx_t *ctx)
     return stack_push_exprval(ctx, &ref);
 }
 
-/* ECMA-262 3rd Edition    10.1.4 */
-static HRESULT interp_ident(script_ctx_t *ctx)
+static HRESULT interp_local(script_ctx_t *ctx)
 {
-    const BSTR arg = get_op_bstr(ctx, 0);
-    exprval_t exprval;
-    jsval_t v;
+    const int arg = get_op_int(ctx, 0);
+    call_frame_t *frame = ctx->call_ctx;
+    jsval_t copy;
     HRESULT hres;
 
-    TRACE("%s\n", debugstr_w(arg));
+    TRACE("%d\n", arg);
 
-    hres = identifier_eval(ctx, arg, &exprval);
+    if(!frame->base_scope || !frame->base_scope->frame)
+        return identifier_value(ctx, local_name(frame, arg));
+
+    hres = jsval_copy(ctx->stack[local_off(frame, arg)], &copy);
     if(FAILED(hres))
         return hres;
 
-    if(exprval.type == EXPRVAL_INVALID)
-        return throw_type_error(ctx, exprval.u.hres, arg);
+    return stack_push(ctx, copy);
+}
 
-    hres = exprval_to_value(ctx, &exprval, &v);
-    if(FAILED(hres))
-        return hres;
+/* ECMA-262 3rd Edition    10.1.4 */
+static HRESULT interp_ident(script_ctx_t *ctx)
+{
+    const BSTR arg = get_op_bstr(ctx, 0);
 
-    return stack_push(ctx, v);
+    TRACE("%s\n", debugstr_w(arg));
+
+    return identifier_value(ctx, arg);
 }
 
 /* ECMA-262 3rd Edition    10.1.4 */
diff --git a/dlls/jscript/engine.h b/dlls/jscript/engine.h
index f515bef..3ac8169 100644
--- a/dlls/jscript/engine.h
+++ b/dlls/jscript/engine.h
@@ -48,6 +48,7 @@
     X(int,        1, ARG_INT,    0)        \
     X(jmp,        0, ARG_ADDR,   0)        \
     X(jmp_z,      0, ARG_ADDR,   0)        \
+    X(local,      1, ARG_INT,    0)        \
     X(local_ref,  1, ARG_INT,    ARG_UINT) \
     X(lshift,     1, 0,0)                  \
     X(lt,         1, 0,0)                  \