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7011490: Wrong computation results in Test6880034

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Incorrect handling of c2i deoptimization on little endian architectures

Reviewed-by: never
This commit is contained in:
Vladimir Danushevsky 2011-03-10 14:56:11 -05:00
parent 3471fe3ee4
commit 594cddaa6b
1 changed files with 6 additions and 1 deletions
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7
hotspot/src/share/vm/c1/c1_LinearScan.cpp
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@ -2703,7 +2703,7 @@ int LinearScan::append_scope_value_for_operand(LIR_Opr opr, GrowableArray<ScopeV
assert(_fpu_stack_allocator != NULL, "must be present");
opr = _fpu_stack_allocator->to_fpu_stack(opr);
assert(opr->fpu_regnrLo() == opr->fpu_regnrHi(), "assumed in calculation (only fpu_regnrHi is used)");
assert(opr->fpu_regnrLo() == opr->fpu_regnrHi(), "assumed in calculation (only fpu_regnrLo is used)");
#endif
#ifdef SPARC
assert(opr->fpu_regnrLo() == opr->fpu_regnrHi() + 1, "assumed in calculation (only fpu_regnrHi is used)");
@ -2715,7 +2715,12 @@ int LinearScan::append_scope_value_for_operand(LIR_Opr opr, GrowableArray<ScopeV
assert(opr->fpu_regnrLo() == opr->fpu_regnrHi(), "assumed in calculation (only fpu_regnrHi is used)");
#endif
#ifdef VM_LITTLE_ENDIAN
VMReg rname_first = frame_map()->fpu_regname(opr->fpu_regnrLo());
#else
VMReg rname_first = frame_map()->fpu_regname(opr->fpu_regnrHi());
#endif
#ifdef _LP64
first = new LocationValue(Location::new_reg_loc(Location::dbl, rname_first));
second = &_int_0_scope_value;