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8023472: C2 optimization breaks with G1

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Set control edge for previous value load in G1 pre-barrier

Reviewed-by: twisti
This commit is contained in:
Vladimir Kozlov 2013-08-23 18:04:35 -07:00
parent ccfb92c6a9
commit dac98bcc0d
2 changed files with 85 additions and 1 deletions
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2
hotspot/src/share/vm/opto/graphKit.cpp
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@ -3595,7 +3595,7 @@ void GraphKit::g1_write_barrier_pre(bool do_load,
if (do_load) {
// load original value
// alias_idx correct??
pre_val = __ load(no_ctrl, adr, val_type, bt, alias_idx);
pre_val = __ load(__ ctrl(), adr, val_type, bt, alias_idx);
}
// if (pre_val != NULL)