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8207049: Minor improvements of compiler code

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Reviewed-by: kvn, mdoerr
This commit is contained in:
Goetz Lindenmaier 2018-07-12 16:31:28 +02:00
parent f508eb1370
commit 2e682fa3cd
37 changed files with 158 additions and 115 deletions
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3
src/hotspot/share/opto/arraycopynode.cpp
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@ -659,7 +659,8 @@ bool ArrayCopyNode::may_modify(const TypeOopPtr *t_oop, MemBarNode* mb, PhaseTra
c = bs->step_over_gc_barrier(c);
CallNode* call = NULL;
if (c != NULL && c->is_Region()) {
guarantee(c != NULL, "step_over_gc_barrier failed, there must be something to step to.");
if (c->is_Region()) {
for (uint i = 1; i < c->req(); i++) {
if (c->in(i) != NULL) {
Node* n = c->in(i)->in(0);