We only track definitions of stack-allocated variables. Trying to
look up other variables in the environment is a bug.
Review URL: http://codereview.chromium.org/843006
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4119
ce2b1a6d-e550-0410-aec6-
3dcde31c8c00
Expression* expr = instructions_[i]->AsExpression();
if (expr == NULL) continue;
Variable* var = expr->AssignedVar();
- if (var == NULL) continue;
+ if (var == NULL || !var->IsStackAllocated()) continue;
// All definitions of this variable are killed.
BitVector* def_set =