Implement crankshaft support for pixel array stores.

src/x64/lithium-x64.cc

Index: src/x64/lithium-x64.cc
diff --git a/src/x64/lithium-x64.cc b/src/x64/lithium-x64.cc
index a6635adf97e3368d04a09ed03f15399df823d2c6..90c981e4df8b66c9baae15b3f81738e5e37fb0c6 100644
--- a/src/x64/lithium-x64.cc
+++ b/src/x64/lithium-x64.cc
@@ -1709,6 +1709,20 @@ LInstruction* LChunkBuilder::DoStoreKeyedFastElement(
 }
 
 
+LInstruction* LChunkBuilder::DoStorePixelArrayElement(
+    HStorePixelArrayElement* instr) {
+  ASSERT(instr->value()->representation().IsInteger32());
+  ASSERT(instr->external_pointer()->representation().IsExternal());
+  ASSERT(instr->key()->representation().IsInteger32());
+
+  LOperand* external_pointer = UseRegister(instr->external_pointer());
+  LOperand* val = UseTempRegister(instr->value());
+  LOperand* key = UseRegister(instr->key());
+
+  return new LStorePixelArrayElement(external_pointer, key, val);
+}
+
+
 LInstruction* LChunkBuilder::DoStoreKeyedGeneric(HStoreKeyedGeneric* instr) {
   Abort("Unimplemented: %s", "DoStoreKeyedGeneric");
   return NULL;