Mercurial > hg > truffle
diff src/share/vm/opto/subnode.cpp @ 17726:085b304a1cc5
8027754: Enable loop optimizations for loops with MathExact inside
Reviewed-by: kvn, iveresov
| author | rbackman |
|---|---|
| date | Thu, 23 Jan 2014 12:08:28 +0100 |
| parents | 55fb97c4c58d |
| children | 4ca6dc0799b6 968a17f18337 78bbf4d43a14 |
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--- a/src/share/vm/opto/subnode.cpp Thu Mar 13 10:18:59 2014 -0700 +++ b/src/share/vm/opto/subnode.cpp Thu Jan 23 12:08:28 2014 +0100 @@ -1126,11 +1126,15 @@ Node *cmp = in(1); if( !cmp->is_Sub() ) return NULL; int cop = cmp->Opcode(); - if( cop == Op_FastLock || cop == Op_FastUnlock || cop == Op_FlagsProj) return NULL; + if( cop == Op_FastLock || cop == Op_FastUnlock) return NULL; Node *cmp1 = cmp->in(1); Node *cmp2 = cmp->in(2); if( !cmp1 ) return NULL; + if (_test._test == BoolTest::overflow || _test._test == BoolTest::no_overflow) { + return NULL; + } + // Constant on left? Node *con = cmp1; uint op2 = cmp2->Opcode();