Revision: 17917
Author: [email protected]
Date: Wed Nov 20 12:35:21 2013 UTC
Log: Convert constant numbers at compile time.
TEST=mjsunit/number-tostring
[email protected]
Review URL: https://codereview.chromium.org/77553005
http://code.google.com/p/v8/source/detail?r=17917
Modified:
/branches/bleeding_edge/src/hydrogen.cc
=======================================
--- /branches/bleeding_edge/src/hydrogen.cc Wed Nov 20 12:00:57 2013 UTC
+++ /branches/bleeding_edge/src/hydrogen.cc Wed Nov 20 12:35:21 2013 UTC
@@ -1554,6 +1554,13 @@
HValue* HGraphBuilder::BuildNumberToString(HValue* object,
Handle<Type> type) {
NoObservableSideEffectsScope scope(this);
+
+ // Convert constant numbers at compile time.
+ if (object->IsConstant() && HConstant::cast(object)->HasNumberValue()) {
+ Handle<Object> number = HConstant::cast(object)->handle(isolate());
+ Handle<String> result = isolate()->factory()->NumberToString(number);
+ return Add<HConstant>(result);
+ }
// Create a joinable continuation.
HIfContinuation found(graph()->CreateBasicBlock(),
--
--
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