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-rw-r--r--js/src/jit/CodeGenerator.cpp123
1 files changed, 82 insertions, 41 deletions
diff --git a/js/src/jit/CodeGenerator.cpp b/js/src/jit/CodeGenerator.cpp
index ce97363be..ccdc5fbfa 100644
--- a/js/src/jit/CodeGenerator.cpp
+++ b/js/src/jit/CodeGenerator.cpp
@@ -2548,6 +2548,20 @@ CodeGenerator::emitLambdaInit(Register output, Register envChain,
masm.storePtr(ImmGCPtr(info.fun->displayAtom()), Address(output, JSFunction::offsetOfAtom()));
}
+typedef bool (*SetFunNameFn)(JSContext*, HandleFunction, HandleValue, FunctionPrefixKind);
+static const VMFunction SetFunNameInfo =
+ FunctionInfo<SetFunNameFn>(js::SetFunctionNameIfNoOwnName, "SetFunName");
+
+void
+CodeGenerator::visitSetFunName(LSetFunName* lir)
+{
+ pushArg(Imm32(lir->mir()->prefixKind()));
+ pushArg(ToValue(lir, LSetFunName::NameValue));
+ pushArg(ToRegister(lir->fun()));
+
+ callVM(SetFunNameInfo, lir);
+}
+
void
CodeGenerator::visitOsiPoint(LOsiPoint* lir)
{
@@ -11312,25 +11326,35 @@ class OutOfLineIsCallable : public OutOfLineCodeBase<CodeGenerator>
}
};
+template <CodeGenerator::CallableOrConstructor mode>
void
-CodeGenerator::visitIsCallable(LIsCallable* ins)
+CodeGenerator::emitIsCallableOrConstructor(Register object, Register output, Label* failure)
{
- Register object = ToRegister(ins->object());
- Register output = ToRegister(ins->output());
-
- OutOfLineIsCallable* ool = new(alloc()) OutOfLineIsCallable(ins);
- addOutOfLineCode(ool, ins->mir());
-
Label notFunction, hasCOps, done;
masm.loadObjClass(object, output);
- // Just skim proxies off. Their notion of isCallable() is more complicated.
- masm.branchTestClassIsProxy(true, output, ool->entry());
+ // Just skim proxies off. Their notion of isCallable()/isConstructor() is
+ // more complicated.
+ masm.branchTestClassIsProxy(true, output, failure);
// An object is callable iff:
// is<JSFunction>() || (getClass()->cOps && getClass()->cOps->call).
+ // An object is constructor iff:
+ // ((is<JSFunction>() && as<JSFunction>().isConstructor) ||
+ // (getClass()->cOps && getClass()->cOps->construct)).
masm.branchPtr(Assembler::NotEqual, output, ImmPtr(&JSFunction::class_), &notFunction);
- masm.move32(Imm32(1), output);
+ if (mode == Callable) {
+ masm.move32(Imm32(1), output);
+ } else {
+ Label notConstructor;
+ masm.load16ZeroExtend(Address(object, JSFunction::offsetOfFlags()), output);
+ masm.and32(Imm32(JSFunction::CONSTRUCTOR), output);
+ masm.branchTest32(Assembler::Zero, output, output, &notConstructor);
+ masm.move32(Imm32(1), output);
+ masm.jump(&done);
+ masm.bind(&notConstructor);
+ masm.move32(Imm32(0), output);
+ }
masm.jump(&done);
masm.bind(&notFunction);
@@ -11341,10 +11365,26 @@ CodeGenerator::visitIsCallable(LIsCallable* ins)
masm.bind(&hasCOps);
masm.loadPtr(Address(output, offsetof(js::Class, cOps)), output);
- masm.cmpPtrSet(Assembler::NonZero, Address(output, offsetof(js::ClassOps, call)),
+ size_t opsOffset = mode == Callable
+ ? offsetof(js::ClassOps, call)
+ : offsetof(js::ClassOps, construct);
+ masm.cmpPtrSet(Assembler::NonZero, Address(output, opsOffset),
ImmPtr(nullptr), output);
masm.bind(&done);
+}
+
+void
+CodeGenerator::visitIsCallable(LIsCallable* ins)
+{
+ Register object = ToRegister(ins->object());
+ Register output = ToRegister(ins->output());
+
+ OutOfLineIsCallable* ool = new(alloc()) OutOfLineIsCallable(ins);
+ addOutOfLineCode(ool, ins->mir());
+
+ emitIsCallableOrConstructor<Callable>(object, output, ool->entry());
+
masm.bind(ool->rejoin());
}
@@ -11364,6 +11404,36 @@ CodeGenerator::visitOutOfLineIsCallable(OutOfLineIsCallable* ool)
masm.jump(ool->rejoin());
}
+typedef bool (*CheckIsCallableFn)(JSContext*, HandleValue, CheckIsCallableKind);
+static const VMFunction CheckIsCallableInfo =
+ FunctionInfo<CheckIsCallableFn>(CheckIsCallable, "CheckIsCallable");
+
+void
+CodeGenerator::visitCheckIsCallable(LCheckIsCallable* ins)
+{
+ ValueOperand checkValue = ToValue(ins, LCheckIsCallable::CheckValue);
+ Register temp = ToRegister(ins->temp());
+
+ // OOL code is used in the following 2 cases:
+ // * checkValue is not callable
+ // * checkValue is proxy and it's unknown whether it's callable or not
+ // CheckIsCallable checks if passed value is callable, regardless of the
+ // cases above. IsCallable operation is not observable and checking it
+ // again doesn't matter.
+ OutOfLineCode* ool = oolCallVM(CheckIsCallableInfo, ins,
+ ArgList(checkValue, Imm32(ins->mir()->checkKind())),
+ StoreNothing());
+
+ masm.branchTestObject(Assembler::NotEqual, checkValue, ool->entry());
+
+ Register object = masm.extractObject(checkValue, temp);
+ emitIsCallableOrConstructor<Callable>(object, temp, ool->entry());
+
+ masm.branchTest32(Assembler::Zero, temp, temp, ool->entry());
+
+ masm.bind(ool->rejoin());
+}
+
class OutOfLineIsConstructor : public OutOfLineCodeBase<CodeGenerator>
{
LIsConstructor* ins_;
@@ -11390,37 +11460,8 @@ CodeGenerator::visitIsConstructor(LIsConstructor* ins)
OutOfLineIsConstructor* ool = new(alloc()) OutOfLineIsConstructor(ins);
addOutOfLineCode(ool, ins->mir());
- Label notFunction, notConstructor, hasCOps, done;
- masm.loadObjClass(object, output);
-
- // Just skim proxies off. Their notion of isConstructor() is more complicated.
- masm.branchTestClassIsProxy(true, output, ool->entry());
-
- // An object is constructor iff
- // ((is<JSFunction>() && as<JSFunction>().isConstructor) ||
- // (getClass()->cOps && getClass()->cOps->construct)).
- masm.branchPtr(Assembler::NotEqual, output, ImmPtr(&JSFunction::class_), &notFunction);
- masm.load16ZeroExtend(Address(object, JSFunction::offsetOfFlags()), output);
- masm.and32(Imm32(JSFunction::CONSTRUCTOR), output);
- masm.branchTest32(Assembler::Zero, output, output, &notConstructor);
- masm.move32(Imm32(1), output);
- masm.jump(&done);
- masm.bind(&notConstructor);
- masm.move32(Imm32(0), output);
- masm.jump(&done);
-
- masm.bind(&notFunction);
- masm.branchPtr(Assembler::NonZero, Address(output, offsetof(js::Class, cOps)),
- ImmPtr(nullptr), &hasCOps);
- masm.move32(Imm32(0), output);
- masm.jump(&done);
-
- masm.bind(&hasCOps);
- masm.loadPtr(Address(output, offsetof(js::Class, cOps)), output);
- masm.cmpPtrSet(Assembler::NonZero, Address(output, offsetof(js::ClassOps, construct)),
- ImmPtr(nullptr), output);
+ emitIsCallableOrConstructor<Constructor>(object, output, ool->entry());
- masm.bind(&done);
masm.bind(ool->rejoin());
}