Mercurial > hg > release > icedtea6-1.3
changeset 1025:67600de741be
2008-08-20 Gary Benson <gbenson@redhat.com>
* ports/hotspot/src/cpu/zero/vm/bytecodeInterpreter_zero.inline.hpp
(VMlongDiv): Handle the special case of division of the most
negative value possible by -1.
(VMlongRem): Likewise.
| author | Gary Benson <gbenson@redhat.com> |
|---|---|
| date | Wed, 20 Aug 2008 04:12:41 -0400 |
| parents | 8bd5f7718ae0 |
| children | 4f4d268762d7 |
| files | ChangeLog ports/hotspot/src/cpu/zero/vm/bytecodeInterpreter_zero.inline.hpp |
| diffstat | 2 files changed, 13 insertions(+), 3 deletions(-) [+] |
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--- a/ChangeLog Sun Aug 17 16:03:52 2008 +0200 +++ b/ChangeLog Wed Aug 20 04:12:41 2008 -0400 @@ -1,3 +1,10 @@ +2008-08-20 Gary Benson <gbenson@redhat.com> + + * ports/hotspot/src/cpu/zero/vm/bytecodeInterpreter_zero.inline.hpp + (VMlongDiv): Handle the special case of division of the most + negative value possible by -1. + (VMlongRem): Likewise. + 2008-08-15 Matthias Klose <doko@ubuntu.com> * acinclude.m4 (FIND_LIBGCJ_JAR): Extend check for libgcj-4.2.*.jar.
--- a/ports/hotspot/src/cpu/zero/vm/bytecodeInterpreter_zero.inline.hpp Sun Aug 17 16:03:52 2008 +0200 +++ b/ports/hotspot/src/cpu/zero/vm/bytecodeInterpreter_zero.inline.hpp Wed Aug 20 04:12:41 2008 -0400 @@ -54,8 +54,9 @@ } inline jlong BytecodeInterpreter::VMlongDiv(jlong op1, jlong op2) { - // QQQ what about check and throw... - return op1 / op2; + /* it's possible we could catch this special case implicitly */ + if (op1 == (jlong) 0x8000000000000000LL && op2 == -1) return op1; + else return op1 / op2; } inline jlong BytecodeInterpreter::VMlongMul(jlong op1, jlong op2) { @@ -75,7 +76,9 @@ } inline jlong BytecodeInterpreter::VMlongRem(jlong op1, jlong op2) { - return op1 % op2; + /* it's possible we could catch this special case implicitly */ + if (op1 == (jlong) 0x8000000000000000LL && op2 == -1) return 0; + else return op1 % op2; } inline jlong BytecodeInterpreter::VMlongUshr(jlong op1, jint op2) {