[turbofan] Insert appropriate conversions for typed array stores.

test/mjsunit/compiler/truncating-store.js

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-var asm = (function Module(global, env, buffer) {
-  "use asm";
+(function() {
+  var asm = (function Module(global, env, buffer) {
+    "use asm";
 
-  var i8 = new global.Int8Array(buffer);
-  var u8 = new global.Uint8Array(buffer);
-  var i16 = new global.Int16Array(buffer);
-  var u16 = new global.Uint16Array(buffer);
-  var i32 = new global.Int32Array(buffer);
-  var u32 = new global.Uint32Array(buffer);
+    var i8 = new global.Int8Array(buffer);
+    var u8 = new global.Uint8Array(buffer);
+    var i16 = new global.Int16Array(buffer);
+    var u16 = new global.Uint16Array(buffer);
+    var i32 = new global.Int32Array(buffer);
+    var u32 = new global.Uint32Array(buffer);
 
-  var H = 0;
+    var H = 0;
 
-  function store_i8() {
-    H = 4294967295;
-    i8[0 >> 0]= H;
-    return i8[0 >> 0];
-  }
+    function store_i8() {
+      H = 4294967295;
+      i8[0 >> 0]= H;
+      return i8[0 >> 0];
+    }
 
-  function store_u8() {
-    H = 4294967295;
-    u8[0 >> 0]= H;
-    return u8[0 >> 0];
-  }
+    function store_u8() {
+      H = 4294967295;
+      u8[0 >> 0]= H;
+      return u8[0 >> 0];
+    }
 
-  function store_i16() {
-    H = 4294967295;
-    i16[0 >> 0]= H;
-    return i16[0 >> 0];
-  }
+    function store_i16() {
+      H = 4294967295;
+      i16[0 >> 0]= H;
+      return i16[0 >> 0];
+    }
 
-  function store_u16() {
-    H = 4294967295;
-    u16[0 >> 0]= H;
-    return u16[0 >> 0];
-  }
+    function store_u16() {
+      H = 4294967295;
+      u16[0 >> 0]= H;
+      return u16[0 >> 0];
+    }
 
-  function store_i32() {
-    H = 4294967295;
-    i32[0 >> 0]= H;
-    return i32[0 >> 0];
-  }
+    function store_i32() {
+      H = 4294967295;
+      i32[0 >> 0]= H;
+      return i32[0 >> 0];
+    }
 
-  function store_u32() {
-    H = 4294967295;
-    u32[0 >> 0]= H;
-    return u32[0 >> 0];
-  }
+    function store_u32() {
+      H = 4294967295;
+      u32[0 >> 0]= H;
+      return u32[0 >> 0];
+    }
 
-  return { store_i8: store_i8,
-           store_u8: store_u8,
-           store_i16: store_i16,
-           store_u16: store_u16,
-           store_i32: store_i32,
-           store_u32: store_u32 };
-})({
-  "Int8Array": Int8Array,
-  "Uint8Array": Uint8Array,
-  "Int16Array": Int16Array,
-  "Uint16Array": Uint16Array,
-  "Int32Array": Int32Array,
-  "Uint32Array": Uint32Array
-}, {}, new ArrayBuffer(64 * 1024));
+    return { store_i8: store_i8,
+             store_u8: store_u8,
+             store_i16: store_i16,
+             store_u16: store_u16,
+             store_i32: store_i32,
+             store_u32: store_u32 };
+  })({
+    "Int8Array": Int8Array,
+    "Uint8Array": Uint8Array,
+    "Int16Array": Int16Array,
+    "Uint16Array": Uint16Array,
+    "Int32Array": Int32Array,
+    "Uint32Array": Uint32Array
+  }, {}, new ArrayBuffer(64 * 1024));
 
-assertEquals(-1, asm.store_i8());
-assertEquals(255, asm.store_u8());
-assertEquals(-1, asm.store_i16());
-assertEquals(65535, asm.store_u16());
-assertEquals(-1, asm.store_i32());
-assertEquals(4294967295, asm.store_u32());
+  assertEquals(-1, asm.store_i8());
+  assertEquals(255, asm.store_u8());
+  assertEquals(-1, asm.store_i16());
+  assertEquals(65535, asm.store_u16());
+  assertEquals(-1, asm.store_i32());
+  assertEquals(4294967295, asm.store_u32());
+})();
+
+(function() {
+  var asm = (function Module(global, env, buffer) {
+    "use asm";
+
+    var i32 = new global.Int32Array(buffer);
+
+    var H = 0;
+
+    // This is not valid asm.js, but we should still generate correct code.
+    function store_i32_from_string() {
+      H = "3";
+      i32[0 >> 0]= H;
+      return i32[0 >> 0];
+    }
+
+    return { store_i32_from_string: store_i32_from_string };
+  })({
+    "Int32Array": Int32Array
+  }, {}, new ArrayBuffer(64 * 1024));
+
+  assertEquals(3, asm.store_i32_from_string());
+})();