MacroAssemblerCodeRef roundThunkGenerator(JSGlobalData* globalData)
{
SpecializedThunkJIT jit(1);
if (!UnaryDoubleOpWrapper(jsRound) || !jit.supportsFloatingPoint())
return MacroAssemblerCodeRef::createSelfManagedCodeRef(globalData->jitStubs->ctiNativeCall());
MacroAssembler::Jump nonIntJump;
jit.loadInt32Argument(0, SpecializedThunkJIT::regT0, nonIntJump);
jit.returnInt32(SpecializedThunkJIT::regT0);
nonIntJump.link(&jit);
jit.loadDoubleArgument(0, SpecializedThunkJIT::fpRegT0, SpecializedThunkJIT::regT0);
SpecializedThunkJIT::Jump intResult;
SpecializedThunkJIT::JumpList doubleResult;
if (jit.supportsFloatingPointTruncate()) {
jit.loadDouble(&zeroConstant, SpecializedThunkJIT::fpRegT1);
doubleResult.append(jit.branchDouble(MacroAssembler::DoubleEqual, SpecializedThunkJIT::fpRegT0, SpecializedThunkJIT::fpRegT1));
SpecializedThunkJIT::JumpList slowPath;
// Handle the negative doubles in the slow path for now.
slowPath.append(jit.branchDouble(MacroAssembler::DoubleLessThanOrUnordered, SpecializedThunkJIT::fpRegT0, SpecializedThunkJIT::fpRegT1));
jit.loadDouble(&halfConstant, SpecializedThunkJIT::fpRegT1);
jit.addDouble(SpecializedThunkJIT::fpRegT0, SpecializedThunkJIT::fpRegT1);
slowPath.append(jit.branchTruncateDoubleToInt32(SpecializedThunkJIT::fpRegT1, SpecializedThunkJIT::regT0));
intResult = jit.jump();
slowPath.link(&jit);
}
jit.callDoubleToDouble(UnaryDoubleOpWrapper(jsRound));
jit.branchConvertDoubleToInt32(SpecializedThunkJIT::fpRegT0, SpecializedThunkJIT::regT0, doubleResult, SpecializedThunkJIT::fpRegT1);
if (jit.supportsFloatingPointTruncate())
intResult.link(&jit);
jit.returnInt32(SpecializedThunkJIT::regT0);
doubleResult.link(&jit);
jit.returnDouble(SpecializedThunkJIT::fpRegT0);
return jit.finalize(*globalData, globalData->jitStubs->ctiNativeCall(), "round");
}
MacroAssemblerCodeRef floorThunkGenerator(VM* vm)
{
SpecializedThunkJIT jit(vm, 1);
MacroAssembler::Jump nonIntJump;
if (!UnaryDoubleOpWrapper(floor) || !jit.supportsFloatingPoint())
return MacroAssemblerCodeRef::createSelfManagedCodeRef(vm->jitStubs->ctiNativeCall(vm));
jit.loadInt32Argument(0, SpecializedThunkJIT::regT0, nonIntJump);
jit.returnInt32(SpecializedThunkJIT::regT0);
nonIntJump.link(&jit);
jit.loadDoubleArgument(0, SpecializedThunkJIT::fpRegT0, SpecializedThunkJIT::regT0);
#if CPU(ARM64)
SpecializedThunkJIT::JumpList doubleResult;
jit.floorDouble(SpecializedThunkJIT::fpRegT0, SpecializedThunkJIT::fpRegT0);
jit.branchConvertDoubleToInt32(SpecializedThunkJIT::fpRegT0, SpecializedThunkJIT::regT0, doubleResult, SpecializedThunkJIT::fpRegT1);
jit.returnInt32(SpecializedThunkJIT::regT0);
doubleResult.link(&jit);
jit.returnDouble(SpecializedThunkJIT::fpRegT0);
#else
SpecializedThunkJIT::Jump intResult;
SpecializedThunkJIT::JumpList doubleResult;
if (jit.supportsFloatingPointTruncate()) {
jit.loadDouble(&zeroConstant, SpecializedThunkJIT::fpRegT1);
doubleResult.append(jit.branchDouble(MacroAssembler::DoubleEqual, SpecializedThunkJIT::fpRegT0, SpecializedThunkJIT::fpRegT1));
SpecializedThunkJIT::JumpList slowPath;
// Handle the negative doubles in the slow path for now.
slowPath.append(jit.branchDouble(MacroAssembler::DoubleLessThanOrUnordered, SpecializedThunkJIT::fpRegT0, SpecializedThunkJIT::fpRegT1));
slowPath.append(jit.branchTruncateDoubleToInt32(SpecializedThunkJIT::fpRegT0, SpecializedThunkJIT::regT0));
intResult = jit.jump();
slowPath.link(&jit);
}
jit.callDoubleToDoublePreservingReturn(UnaryDoubleOpWrapper(floor));
jit.branchConvertDoubleToInt32(SpecializedThunkJIT::fpRegT0, SpecializedThunkJIT::regT0, doubleResult, SpecializedThunkJIT::fpRegT1);
if (jit.supportsFloatingPointTruncate())
intResult.link(&jit);
jit.returnInt32(SpecializedThunkJIT::regT0);
doubleResult.link(&jit);
jit.returnDouble(SpecializedThunkJIT::fpRegT0);
#endif // CPU(ARM64)
return jit.finalize(vm->jitStubs->ctiNativeTailCall(vm), "floor");
}