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6746907: Improve implicit null check generation

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Add missing implicit null check cases.

Reviewed-by: never
This commit is contained in:
Vladimir Kozlov 2008-09-10 20:44:47 -07:00
parent 659ca734bb
commit 9812da470c
2 changed files with 9 additions and 0 deletions
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2
hotspot/src/share/vm/opto/graphKit.cpp
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@ -1212,6 +1212,7 @@ Node* GraphKit::null_check_common(Node* value, BasicType type,
Deoptimization::Action_make_not_entrant,
NULL, "assert_null");
} else {
replace_in_map(value, zerocon(type));
builtin_throw(reason);
}
}
@ -1960,6 +1961,7 @@ Node* GraphKit::null_check_oop(Node* value, Node* *null_control,
// method will be compiled to handle NULLs.
PreserveJVMState pjvms(this);
set_control(*null_control);
replace_in_map(value, null());
uncommon_trap(Deoptimization::Reason_null_check,
Deoptimization::Action_make_not_entrant);
(*null_control) = top(); // NULL path is dead