Revision: 16059
Author: [email protected]
Date: Mon Aug 5 09:53:28 2013
Log: Change environment padding value to value with smi representation.
BUG=
[email protected]
Review URL: https://chromiumcodereview.appspot.com/22226002
http://code.google.com/p/v8/source/detail?r=16059
Modified:
/branches/bleeding_edge/src/hydrogen.cc
=======================================
--- /branches/bleeding_edge/src/hydrogen.cc Mon Aug 5 06:45:16 2013
+++ /branches/bleeding_edge/src/hydrogen.cc Mon Aug 5 09:53:28 2013
@@ -1050,12 +1050,14 @@
HBasicBlock* continuation) {
if (continuation->last_environment() != NULL) {
// When merging from a deopt block to a continuation, resolve
differences in
- // environment by pushing undefined and popping extra values so that
the
- // environments match during the join.
+ // environment by pushing constant 0 and popping extra values so that
the
+ // environments match during the join. Push 0 since it has the most
specific
+ // representation, and will not influence representation inference of
the
+ // phi.
int continuation_env_length =
continuation->last_environment()->length();
while (continuation_env_length != from->last_environment()->length()) {
if (continuation_env_length > from->last_environment()->length()) {
- from->last_environment()->Push(graph()->GetConstantUndefined());
+ from->last_environment()->Push(graph()->GetConstant0());
} else {
from->last_environment()->Pop();
}
--
--
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