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7153771: array bound check elimination for c1

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When possible optimize out array bound checks, inserting predicates when needed.

Reviewed-by: never, kvn, twisti
This commit is contained in:
Thomas Wuerthinger 2013-03-21 09:27:54 +01:00 • committed by Roland Westrelin
parent 2f4ecb86a2
commit 06ef4cddf7
40 changed files with 2861 additions and 153 deletions
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11
hotspot/src/share/vm/oops/instanceKlass.cpp
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@ -2228,8 +2228,6 @@ void InstanceKlass::clean_implementors_list(BoolObjectClosure* is_alive) {
}
void InstanceKlass::clean_method_data(BoolObjectClosure* is_alive) {
#ifdef COMPILER2
// Currently only used by C2.
for (int m = 0; m < methods()->length(); m++) {
MethodData* mdo = methods()->at(m)->method_data();
if (mdo != NULL) {
@ -2240,15 +2238,6 @@ void InstanceKlass::clean_method_data(BoolObjectClosure* is_alive) {
}
}
}
#else
#ifdef ASSERT
// Verify that we haven't started to use MDOs for C1.
for (int m = 0; m < methods()->length(); m++) {
MethodData* mdo = methods()->at(m)->method_data();
assert(mdo == NULL, "Didn't expect C1 to use MDOs");
}
#endif // ASSERT
#endif // !COMPILER2
}