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comparison src/share/vm/opto/graphKit.cpp @ 332:c792b641b8bd

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6746907: Improve implicit null check generation Summary: add missing implicit null check cases. Reviewed-by: never
author kvn
date Wed, 10 Sep 2008 20:44:47 -0700
parents d1605aabd0a1
children 5f44674206d3 8261ee795323
comparison
equal deleted inserted replaced
331:cecd8eb4e0ca 332:c792b641b8bd
1210 } else if (assert_null) { 1210 } else if (assert_null) {
1211 uncommon_trap(reason, 1211 uncommon_trap(reason,
1212 Deoptimization::Action_make_not_entrant, 1212 Deoptimization::Action_make_not_entrant,
1213 NULL, "assert_null"); 1213 NULL, "assert_null");
1214 } else { 1214 } else {
1215 replace_in_map(value, zerocon(type));
1215 builtin_throw(reason); 1216 builtin_throw(reason);
1216 } 1217 }
1217 } 1218 }
1218 1219
1219 // Must throw exception, fall-thru not possible? 1220 // Must throw exception, fall-thru not possible?
1958 // recompile; the offending check-cast will be compiled to handle NULLs. 1959 // recompile; the offending check-cast will be compiled to handle NULLs.
1959 // If we see more than one offending BCI, then all checkcasts in the 1960 // If we see more than one offending BCI, then all checkcasts in the
1960 // method will be compiled to handle NULLs. 1961 // method will be compiled to handle NULLs.
1961 PreserveJVMState pjvms(this); 1962 PreserveJVMState pjvms(this);
1962 set_control(*null_control); 1963 set_control(*null_control);
1964 replace_in_map(value, null());
1963 uncommon_trap(Deoptimization::Reason_null_check, 1965 uncommon_trap(Deoptimization::Reason_null_check,
1964 Deoptimization::Action_make_not_entrant); 1966 Deoptimization::Action_make_not_entrant);
1965 (*null_control) = top(); // NULL path is dead 1967 (*null_control) = top(); // NULL path is dead
1966 } 1968 }
1967 1969