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6948602: Disable use of SSE4.2 in String.indexOf intrinsic until 6942326 is fixed

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Disable the use of pcmpestri until it can be guaranteed that the load doesn't cross in to the uncommited space. See 6942326.

Reviewed-by: never, kvn
This commit is contained in:
Igor Veresov 2010-04-29 17:53:58 -07:00
parent 6d2a896bcd
commit 61b9d428d1
1 changed files with 3 additions and 1 deletions

4
hotspot/src/share/vm/opto/library_call.cpp

@ -1175,7 +1175,9 @@ bool LibraryCallKit::inline_string_indexOf() {
Node *receiver = pop();
Node* result;
if (Matcher::has_match_rule(Op_StrIndexOf) &&
// Disable the use of pcmpestri until it can be guaranteed that
// the load doesn't cross into the uncommited space.
if (false && Matcher::has_match_rule(Op_StrIndexOf) &&
UseSSE42Intrinsics) {
// Generate SSE4.2 version of indexOf
// We currently only have match rules that use SSE4.2