void ArithProfile::emitObserveResult(CCallHelpers& jit, JSValueRegs regs, TagRegistersMode mode)
{
if (!shouldEmitSetDouble() && !shouldEmitSetNonNumber())
return;
CCallHelpers::Jump isInt32 = jit.branchIfInt32(regs, mode);
CCallHelpers::Jump notDouble = jit.branchIfNotDoubleKnownNotInt32(regs, mode);
emitSetDouble(jit);
CCallHelpers::Jump done = jit.jump();
notDouble.link(&jit);
emitSetNonNumber(jit);
done.link(&jit);
isInt32.link(&jit);
}
JITMathICInlineResult JITNegGenerator::generateInline(CCallHelpers& jit, MathICGenerationState& state, const ArithProfile* arithProfile)
{
ASSERT(m_scratchGPR != InvalidGPRReg);
ASSERT(m_scratchGPR != m_src.payloadGPR());
ASSERT(m_scratchGPR != m_result.payloadGPR());
#if USE(JSVALUE32_64)
ASSERT(m_scratchGPR != m_src.tagGPR());
ASSERT(m_scratchGPR != m_result.tagGPR());
#endif
// We default to speculating int32.
ObservedType observedTypes = ObservedType().withInt32();
if (arithProfile)
observedTypes = arithProfile->lhsObservedType();
ASSERT_WITH_MESSAGE(!observedTypes.isEmpty(), "We should not attempt to generate anything if we do not have a profile.");
if (observedTypes.isOnlyNonNumber())
return JITMathICInlineResult::DontGenerate;
if (observedTypes.isOnlyInt32()) {
jit.moveValueRegs(m_src, m_result);
state.slowPathJumps.append(jit.branchIfNotInt32(m_src));
state.slowPathJumps.append(jit.branchTest32(CCallHelpers::Zero, m_src.payloadGPR(), CCallHelpers::TrustedImm32(0x7fffffff)));
jit.neg32(m_result.payloadGPR());
#if USE(JSVALUE64)
jit.boxInt32(m_result.payloadGPR(), m_result);
#endif
return JITMathICInlineResult::GeneratedFastPath;
}
if (observedTypes.isOnlyNumber()) {
state.slowPathJumps.append(jit.branchIfInt32(m_src));
state.slowPathJumps.append(jit.branchIfNotNumber(m_src, m_scratchGPR));
#if USE(JSVALUE64)
if (m_src.payloadGPR() != m_result.payloadGPR()) {
jit.move(CCallHelpers::TrustedImm64(static_cast<int64_t>(1ull << 63)), m_result.payloadGPR());
jit.xor64(m_src.payloadGPR(), m_result.payloadGPR());
} else {
jit.move(CCallHelpers::TrustedImm64(static_cast<int64_t>(1ull << 63)), m_scratchGPR);
jit.xor64(m_scratchGPR, m_result.payloadGPR());
}
#else
jit.moveValueRegs(m_src, m_result);
jit.xor32(CCallHelpers::TrustedImm32(1 << 31), m_result.tagGPR());
#endif
return JITMathICInlineResult::GeneratedFastPath;
}
return JITMathICInlineResult::GenerateFullSnippet;
}
