diff options
Diffstat (limited to 'Source/JavaScriptCore/llint/LowLevelInterpreter64.asm')
| -rw-r--r-- | Source/JavaScriptCore/llint/LowLevelInterpreter64.asm | 36 |
1 files changed, 30 insertions, 6 deletions
diff --git a/Source/JavaScriptCore/llint/LowLevelInterpreter64.asm b/Source/JavaScriptCore/llint/LowLevelInterpreter64.asm index f1a7e2998..73e8613de 100644 --- a/Source/JavaScriptCore/llint/LowLevelInterpreter64.asm +++ b/Source/JavaScriptCore/llint/LowLevelInterpreter64.asm @@ -324,7 +324,13 @@ macro equalNullComparison() loadp [cfr, t0, 8], t0 btpnz t0, tagMask, .immediate loadp JSCell::m_structure[t0], t2 - tbnz Structure::m_typeInfo + TypeInfo::m_flags[t2], MasqueradesAsUndefined, t0 + btbnz Structure::m_typeInfo + TypeInfo::m_flags[t2], MasqueradesAsUndefined, .masqueradesAsUndefined + move 0, t0 + jmp .done +.masqueradesAsUndefined: + loadp CodeBlock[cfr], t0 + loadp CodeBlock::m_globalObject[t0], t0 + cpeq Structure::m_globalObject[t2], t0, t0 jmp .done .immediate: andp ~TagBitUndefined, t0 @@ -733,10 +739,17 @@ _llint_op_is_undefined: dispatch(3) .opIsUndefinedCell: loadp JSCell::m_structure[t0], t0 - tbnz Structure::m_typeInfo + TypeInfo::m_flags[t0], MasqueradesAsUndefined, t1 - orp ValueFalse, t1 + btbnz Structure::m_typeInfo + TypeInfo::m_flags[t0], MasqueradesAsUndefined, .masqueradesAsUndefined + move ValueFalse, t1 storep t1, [cfr, t2, 8] dispatch(3) +.masqueradesAsUndefined: + loadp CodeBlock[cfr], t1 + loadp CodeBlock::m_globalObject[t1], t1 + cpeq Structure::m_globalObject[t0], t1, t3 + orp ValueFalse, t3 + storep t3, [cfr, t2, 8] + dispatch(3) _llint_op_is_boolean: @@ -1250,7 +1263,7 @@ macro equalNull(cellHandler, immediateHandler) loadp [cfr, t0, 8], t0 btpnz t0, tagMask, .immediate loadp JSCell::m_structure[t0], t2 - cellHandler(Structure::m_typeInfo + TypeInfo::m_flags[t2], .target) + cellHandler(t2, Structure::m_typeInfo + TypeInfo::m_flags[t2], .target) dispatch(3) .target: @@ -1265,14 +1278,25 @@ end _llint_op_jeq_null: traceExecution() equalNull( - macro (value, target) btbnz value, MasqueradesAsUndefined, target end, + macro (structure, value, target) + btbz value, MasqueradesAsUndefined, .notMasqueradesAsUndefined + loadp CodeBlock[cfr], t0 + loadp CodeBlock::m_globalObject[t0], t0 + bpeq Structure::m_globalObject[structure], t0, target +.notMasqueradesAsUndefined: + end, macro (value, target) bpeq value, ValueNull, target end) _llint_op_jneq_null: traceExecution() equalNull( - macro (value, target) btbz value, MasqueradesAsUndefined, target end, + macro (structure, value, target) + btbz value, MasqueradesAsUndefined, target + loadp CodeBlock[cfr], t0 + loadp CodeBlock::m_globalObject[t0], t0 + bpneq Structure::m_globalObject[structure], t0, target + end, macro (value, target) bpneq value, ValueNull, target end) |