[Interpreter] Fix deopt when accumulator needs to be materialized.

test/mjsunit/compiler/deopt-materialize-accumulator.js

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
 //       with the distribution.
 //     * Neither the name of Google Inc. nor the names of its
 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Flags: --allow-natives-syntax --turbo-escape
+// Flags: --allow-natives-syntax
+//
+// Tests that Turbofan correctly materializes values which are in the
+// interpreters accumulator during deopt.
 
-function f() {
-  var x = new Array(2);
-  x[0] = 23.1234;
-  x[1] = 25.1234;
-  %DeoptimizeNow();
-  return x[0];
+var global = 3;
+function f(a) {
+  // This will trigger a deopt since global was previously a SMI, with the
+  // accumulator holding an unboxed double which needs materialized.
+  global = %_MathSqrt(a);
 }
-
-assertEquals(f(), 23.1234);
-assertEquals(f(), 23.1234);
 %OptimizeFunctionOnNextCall(f);
-assertEquals(f(), 23.1234);
+f(0.25);
+assertEquals(0.5, global);