Mercurial > hg > truffle
comparison src/share/vm/opto/library_call.cpp @ 1504:ae8f909e5fc7
6948602: Disable use of SSE4.2 in String.indexOf intrinsic until 6942326 is fixed
Summary: 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
| author | iveresov |
|---|---|
| date | Thu, 29 Apr 2010 17:53:58 -0700 |
| parents | d7f654633cfe |
| children | df736661d0c8 |
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| 1503:c640000b7cc1 | 1504:ae8f909e5fc7 |
|---|---|
| 1173 _sp += 2; | 1173 _sp += 2; |
| 1174 Node *argument = pop(); // pop non-receiver first: it was pushed second | 1174 Node *argument = pop(); // pop non-receiver first: it was pushed second |
| 1175 Node *receiver = pop(); | 1175 Node *receiver = pop(); |
| 1176 | 1176 |
| 1177 Node* result; | 1177 Node* result; |
| 1178 if (Matcher::has_match_rule(Op_StrIndexOf) && | 1178 // Disable the use of pcmpestri until it can be guaranteed that |
| 1179 // the load doesn't cross into the uncommited space. | |
| 1180 if (false && Matcher::has_match_rule(Op_StrIndexOf) && | |
| 1179 UseSSE42Intrinsics) { | 1181 UseSSE42Intrinsics) { |
| 1180 // Generate SSE4.2 version of indexOf | 1182 // Generate SSE4.2 version of indexOf |
| 1181 // We currently only have match rules that use SSE4.2 | 1183 // We currently only have match rules that use SSE4.2 |
| 1182 | 1184 |
| 1183 // Null check on self without removing any arguments. The argument | 1185 // Null check on self without removing any arguments. The argument |