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8209668: Explicit barriers for C1/assembler

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Reviewed-by: roland, eosterlund
This commit is contained in:
Roman Kennke 2018-08-21 13:12:15 +02:00
parent f1173ad06c
commit f6bcc38500
2 changed files with 8 additions and 0 deletions

4
src/hotspot/cpu/aarch64/c1_LIRAssembler_aarch64.cpp

@ -2167,6 +2167,9 @@ void LIR_Assembler::emit_arraycopy(LIR_OpArrayCopy* op) {
Register length = op->length()->as_register();
Register tmp = op->tmp()->as_register();
__ resolve(ACCESS_READ, src);
__ resolve(ACCESS_WRITE, dst);
CodeStub* stub = op->stub();
int flags = op->flags();
BasicType basic_type = default_type != NULL ? default_type->element_type()->basic_type() : T_ILLEGAL;
@ -2510,6 +2513,7 @@ void LIR_Assembler::emit_lock(LIR_OpLock* op) {
scratch = op->scratch_opr()->as_register();
}
assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header");
__ resolve(ACCESS_READ | ACCESS_WRITE, obj);
// add debug info for NullPointerException only if one is possible
int null_check_offset = __ lock_object(hdr, obj, lock, scratch, *op->stub()->entry());
if (op->info() != NULL) {

4
src/hotspot/cpu/x86/c1_LIRAssembler_x86.cpp

@ -3038,6 +3038,9 @@ void LIR_Assembler::emit_arraycopy(LIR_OpArrayCopy* op) {
Register length = op->length()->as_register();
Register tmp = op->tmp()->as_register();
__ resolve(ACCESS_READ, src);
__ resolve(ACCESS_WRITE, dst);
CodeStub* stub = op->stub();
int flags = op->flags();
BasicType basic_type = default_type != NULL ? default_type->element_type()->basic_type() : T_ILLEGAL;
@ -3476,6 +3479,7 @@ void LIR_Assembler::emit_lock(LIR_OpLock* op) {
scratch = op->scratch_opr()->as_register();
}
assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header");
__ resolve(ACCESS_READ | ACCESS_WRITE, obj);
// add debug info for NullPointerException only if one is possible
int null_check_offset = __ lock_object(hdr, obj, lock, scratch, *op->stub()->entry());
if (op->info() != NULL) {