Merge branch 'incoming'

1 files changed, 12 insertions, 9 deletions

diff --git a/src/runtime.js b/src/runtime.js
index 9d5e5e1f..d1475bd4 100644
--- a/src/runtime.js
+++ b/src/runtime.js
@@ -123,42 +123,45 @@ var Runtime = {
   FLOAT_TYPES: set('float', 'double'),
 
   // Mirrors processMathop's treatment of constants (which we optimize directly)
+  BITSHIFT64_SHL: 0,
+  BITSHIFT64_ASHR: 1,
+  BITSHIFT64_LSHR: 2,
   bitshift64: function(low, high, op, bits) {
     var ret;
     var ander = Math.pow(2, bits)-1;
     if (bits < 32) {
       switch (op) {
-        case 'shl':
+        case Runtime.BITSHIFT64_SHL:
           ret = [low << bits, (high << bits) | ((low&(ander << (32 - bits))) >>> (32 - bits))];
           break;
-        case 'ashr':
+        case Runtime.BITSHIFT64_ASHR:
           ret = [(((low >>> bits ) | ((high&ander) << (32 - bits))) >> 0) >>> 0, (high >> bits) >>> 0];
           break;
-        case 'lshr':
+        case Runtime.BITSHIFT64_LSHR:
           ret = [((low >>> bits) | ((high&ander) << (32 - bits))) >>> 0, high >>> bits];
           break;
       }
     } else if (bits == 32) {
       switch (op) {
-        case 'shl':
+        case Runtime.BITSHIFT64_SHL:
           ret = [0, low];
           break;
-        case 'ashr':
+        case Runtime.BITSHIFT64_ASHR:
           ret = [high, (high|0) < 0 ? ander : 0];
           break;
-        case 'lshr':
+        case Runtime.BITSHIFT64_LSHR:
           ret = [high, 0];
           break;
       }
     } else { // bits > 32
       switch (op) {
-        case 'shl':
+        case Runtime.BITSHIFT64_SHL:
           ret = [0, low << (bits - 32)];
           break;
-        case 'ashr':
+        case Runtime.BITSHIFT64_ASHR:
           ret = [(high >> (bits - 32)) >>> 0, (high|0) < 0 ? ander : 0];
           break;
-        case 'lshr':
+        case Runtime.BITSHIFT64_LSHR:
           ret = [high >>>  (bits - 32) , 0];
           break;
       }