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comparison src/cpu/x86/vm/c1_LIRAssembler_x86.cpp @ 17831:876390ee9b6f

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8039043: Implicit null check is in the wrong place in C1 -UseCompressedOops Summary: Null check is placed in a wrong place when storing a null to an object field on x64 with compressed oops off Reviewed-by: roland, vlivanov, kvn
author iveresov
date Wed, 02 Apr 2014 11:24:51 -0700
parents 12ad8db39f76
children 0bf37f737702
comparison
equal deleted inserted replaced
17829:0118c8c7b80f 17831:876390ee9b6f
799 case T_ARRAY: 799 case T_ARRAY:
800 if (c->as_jobject() == NULL) { 800 if (c->as_jobject() == NULL) {
801 if (UseCompressedOops && !wide) { 801 if (UseCompressedOops && !wide) {
802 __ movl(as_Address(addr), (int32_t)NULL_WORD); 802 __ movl(as_Address(addr), (int32_t)NULL_WORD);
803 } else { 803 } else {
804 #ifdef _LP64
805 __ xorptr(rscratch1, rscratch1);
806 null_check_here = code_offset();
807 __ movptr(as_Address(addr), rscratch1);
808 #else
804 __ movptr(as_Address(addr), NULL_WORD); 809 __ movptr(as_Address(addr), NULL_WORD);
810 #endif
805 } 811 }
806 } else { 812 } else {
807 if (is_literal_address(addr)) { 813 if (is_literal_address(addr)) {
808 ShouldNotReachHere(); 814 ShouldNotReachHere();
809 __ movoop(as_Address(addr, noreg), c->as_jobject()); 815 __ movoop(as_Address(addr, noreg), c->as_jobject());