From a355e45e223b9f0a96aa78413282248d3a3b4c2e Mon Sep 17 00:00:00 2001 From: "sgjesse@chromium.org" Date: Wed, 5 May 2010 06:40:14 +0000 Subject: [PATCH] Pass key in register for keyed load IC The calling convention for keyed load IC is changed to have the key passed both in a register (r0) and on the stack. Next steps will be first to remove the key from the stack and then pass the receiver in a register (r1). Review URL: http://codereview.chromium.org/1937003 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4584 ce2b1a6d-e550-0410-aec6-3dcde31c8c00 --- src/arm/codegen-arm.cc | 4 +-- src/arm/debug-arm.cc | 3 ++- src/arm/full-codegen-arm.cc | 13 ++++++--- src/arm/ic-arm.cc | 32 +++++++++++++--------- src/arm/stub-cache-arm.cc | 64 +++++++++++++++++++++----------------------- src/arm/virtual-frame-arm.cc | 1 + 6 files changed, 65 insertions(+), 52 deletions(-) diff --git a/src/arm/codegen-arm.cc b/src/arm/codegen-arm.cc index f2bbac9..a0a1e86 100644 --- a/src/arm/codegen-arm.cc +++ b/src/arm/codegen-arm.cc @@ -5391,7 +5391,8 @@ void DeferredReferenceGetKeyedValue::Generate() { // The rest of the instructions in the deferred code must be together. { Assembler::BlockConstPoolScope block_const_pool(masm_); - // Call keyed load IC. It has all arguments on the stack. + // Call keyed load IC. It has all arguments on the stack and the key in r0. + __ ldr(r0, MemOperand(sp, 0)); Handle ic(Builtins::builtin(Builtins::KeyedLoadIC_Initialize)); __ Call(ic, RelocInfo::CODE_TARGET); // The call must be followed by a nop instruction to indicate that the @@ -5514,7 +5515,6 @@ void CodeGenerator::EmitNamedStore(Handle name, bool is_contextual) { void CodeGenerator::EmitKeyedLoad() { if (loop_nesting() == 0) { - VirtualFrame::SpilledScope spilled(frame_); Comment cmnt(masm_, "[ Load from keyed property"); frame_->CallKeyedLoadIC(); } else { diff --git a/src/arm/debug-arm.cc b/src/arm/debug-arm.cc index d8149f0..d02ba76 100644 --- a/src/arm/debug-arm.cc +++ b/src/arm/debug-arm.cc @@ -161,9 +161,10 @@ void Debug::GenerateStoreICDebugBreak(MacroAssembler* masm) { void Debug::GenerateKeyedLoadICDebugBreak(MacroAssembler* masm) { // ---------- S t a t e -------------- // -- lr : return address + // -- r0 : key // -- sp[0] : key // -- sp[4] : receiver - Generate_DebugBreakCallHelper(masm, 0); + Generate_DebugBreakCallHelper(masm, r0.bit()); } diff --git a/src/arm/full-codegen-arm.cc b/src/arm/full-codegen-arm.cc index bed9364..e9bdfe5 100644 --- a/src/arm/full-codegen-arm.cc +++ b/src/arm/full-codegen-arm.cc @@ -728,7 +728,7 @@ void FullCodeGenerator::EmitVariableLoad(Variable* var, ASSERT_NOT_NULL(object_slot); // Load the object. - Move(r2, object_slot); + Move(r1, object_slot); // Assert that the key is a smi. Literal* key_literal = property->key()->AsLiteral(); @@ -736,12 +736,12 @@ void FullCodeGenerator::EmitVariableLoad(Variable* var, ASSERT(key_literal->handle()->IsSmi()); // Load the key. - __ mov(r1, Operand(key_literal->handle())); + __ mov(r0, Operand(key_literal->handle())); // Push both as arguments to ic. - __ Push(r2, r1); + __ Push(r1, r0); - // Do a keyed property load. + // Call keyed load IC. It has all arguments on the stack and the key in r0. Handle ic(Builtins::builtin(Builtins::KeyedLoadIC_Initialize)); __ Call(ic, RelocInfo::CODE_TARGET); @@ -1005,6 +1005,8 @@ void FullCodeGenerator::EmitNamedPropertyLoad(Property* prop) { void FullCodeGenerator::EmitKeyedPropertyLoad(Property* prop) { SetSourcePosition(prop->position()); + // Call keyed load IC. It has all arguments on the stack and the key in r0. + __ ldr(r0, MemOperand(sp, 0)); Handle ic(Builtins::builtin(Builtins::KeyedLoadIC_Initialize)); __ Call(ic, RelocInfo::CODE_TARGET); } @@ -1247,6 +1249,9 @@ void FullCodeGenerator::VisitCall(Call* expr) { VisitForValue(prop->key(), kStack); // Record source code position for IC call. SetSourcePosition(prop->position()); + // Call keyed load IC. It has all arguments on the stack and the key in + // r0. + __ ldr(r0, MemOperand(sp, 0)); Handle ic(Builtins::builtin(Builtins::KeyedLoadIC_Initialize)); __ Call(ic, RelocInfo::CODE_TARGET); // Load receiver object into r1. diff --git a/src/arm/ic-arm.cc b/src/arm/ic-arm.cc index bbf90a2..5b1915f 100644 --- a/src/arm/ic-arm.cc +++ b/src/arm/ic-arm.cc @@ -682,12 +682,13 @@ Object* KeyedLoadIC_Miss(Arguments args); void KeyedLoadIC::GenerateMiss(MacroAssembler* masm) { // ---------- S t a t e -------------- // -- lr : return address + // -- r0 : key // -- sp[0] : key // -- sp[4] : receiver // ----------------------------------- - __ ldm(ia, sp, r2.bit() | r3.bit()); - __ Push(r3, r2); + __ ldr(r1, MemOperand(sp, kPointerSize)); + __ Push(r1, r0); ExternalReference ref = ExternalReference(IC_Utility(kKeyedLoadIC_Miss)); __ TailCallExternalReference(ref, 2, 1); @@ -697,12 +698,13 @@ void KeyedLoadIC::GenerateMiss(MacroAssembler* masm) { void KeyedLoadIC::GenerateRuntimeGetProperty(MacroAssembler* masm) { // ---------- S t a t e -------------- // -- lr : return address + // -- r0 : key // -- sp[0] : key // -- sp[4] : receiver // ----------------------------------- - __ ldm(ia, sp, r2.bit() | r3.bit()); - __ Push(r3, r2); + __ ldr(r1, MemOperand(sp, kPointerSize)); + __ Push(r1, r0); __ TailCallRuntime(Runtime::kGetProperty, 2, 1); } @@ -711,13 +713,14 @@ void KeyedLoadIC::GenerateRuntimeGetProperty(MacroAssembler* masm) { void KeyedLoadIC::GenerateGeneric(MacroAssembler* masm) { // ---------- S t a t e -------------- // -- lr : return address + // -- r0 : key // -- sp[0] : key // -- sp[4] : receiver // ----------------------------------- Label slow, fast, check_pixel_array, check_number_dictionary; - // Get the key and receiver object from the stack. - __ ldm(ia, sp, r0.bit() | r1.bit()); + // Get the object from the stack. + __ ldr(r1, MemOperand(sp, kPointerSize)); // Check that the object isn't a smi. __ BranchOnSmi(r1, &slow); @@ -790,6 +793,7 @@ void KeyedLoadIC::GenerateGeneric(MacroAssembler* masm) { // Slow case: Push extra copies of the arguments (2). __ bind(&slow); __ IncrementCounter(&Counters::keyed_load_generic_slow, 1, r0, r1); + __ ldr(r0, MemOperand(sp, 0)); GenerateRuntimeGetProperty(masm); } @@ -797,6 +801,7 @@ void KeyedLoadIC::GenerateGeneric(MacroAssembler* masm) { void KeyedLoadIC::GenerateString(MacroAssembler* masm) { // ---------- S t a t e -------------- // -- lr : return address + // -- r0 : key // -- sp[0] : key // -- sp[4] : receiver // ----------------------------------- @@ -806,8 +811,8 @@ void KeyedLoadIC::GenerateString(MacroAssembler* masm) { Label slow_char_code; Label got_char_code; - // Get the key and receiver object from the stack. - __ ldm(ia, sp, r0.bit() | r1.bit()); + // Get the object from the stack. + __ ldr(r1, MemOperand(sp, kPointerSize)); Register object = r1; Register index = r0; @@ -907,13 +912,14 @@ void KeyedLoadIC::GenerateExternalArray(MacroAssembler* masm, ExternalArrayType array_type) { // ---------- S t a t e -------------- // -- lr : return address + // -- r0 : key // -- sp[0] : key // -- sp[4] : receiver // ----------------------------------- Label slow, failed_allocation; - // Get the key and receiver object from the stack. - __ ldm(ia, sp, r0.bit() | r1.bit()); + // Get the object from the stack. + __ ldr(r1, MemOperand(sp, kPointerSize)); // r0: key // r1: receiver object @@ -1143,6 +1149,7 @@ void KeyedLoadIC::GenerateExternalArray(MacroAssembler* masm, // Slow case: Load name and receiver from stack and jump to runtime. __ bind(&slow); __ IncrementCounter(&Counters::keyed_load_external_array_slow, 1, r0, r1); + __ ldr(r0, MemOperand(sp, 0)); GenerateRuntimeGetProperty(masm); } @@ -1150,13 +1157,14 @@ void KeyedLoadIC::GenerateExternalArray(MacroAssembler* masm, void KeyedLoadIC::GenerateIndexedInterceptor(MacroAssembler* masm) { // ---------- S t a t e -------------- // -- lr : return address + // -- r0 : key // -- sp[0] : key // -- sp[4] : receiver // ----------------------------------- Label slow; - // Get the key and receiver object from the stack. - __ ldm(ia, sp, r0.bit() | r1.bit()); + // Get the object from the stack. + __ ldr(r1, MemOperand(sp, kPointerSize)); // Check that the receiver isn't a smi. __ BranchOnSmi(r1, &slow); diff --git a/src/arm/stub-cache-arm.cc b/src/arm/stub-cache-arm.cc index fbccbab..095631d 100644 --- a/src/arm/stub-cache-arm.cc +++ b/src/arm/stub-cache-arm.cc @@ -1824,18 +1824,18 @@ Object* KeyedLoadStubCompiler::CompileLoadField(String* name, int index) { // ----------- S t a t e ------------- // -- lr : return address + // -- r0 : key // -- sp[0] : key // -- sp[4] : receiver // ----------------------------------- Label miss; - __ ldr(r2, MemOperand(sp, 0)); - __ ldr(r0, MemOperand(sp, kPointerSize)); - - __ cmp(r2, Operand(Handle(name))); + // Check the key is the cached one. + __ cmp(r0, Operand(Handle(name))); __ b(ne, &miss); - GenerateLoadField(receiver, holder, r0, r3, r1, index, name, &miss); + __ ldr(r1, MemOperand(sp, kPointerSize)); // Receiver. + GenerateLoadField(receiver, holder, r1, r2, r3, index, name, &miss); __ bind(&miss); GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC); @@ -1849,19 +1849,19 @@ Object* KeyedLoadStubCompiler::CompileLoadCallback(String* name, AccessorInfo* callback) { // ----------- S t a t e ------------- // -- lr : return address + // -- r0 : key // -- sp[0] : key // -- sp[4] : receiver // ----------------------------------- Label miss; - __ ldr(r2, MemOperand(sp, 0)); - __ ldr(r0, MemOperand(sp, kPointerSize)); - - __ cmp(r2, Operand(Handle(name))); + // Check the key is the cached one. + __ cmp(r0, Operand(Handle(name))); __ b(ne, &miss); Failure* failure = Failure::InternalError(); - bool success = GenerateLoadCallback(receiver, holder, r0, r2, r3, r1, + __ ldr(r1, MemOperand(sp, kPointerSize)); // Receiver. + bool success = GenerateLoadCallback(receiver, holder, r1, r0, r2, r3, callback, name, &miss, &failure); if (!success) return failure; @@ -1878,19 +1878,18 @@ Object* KeyedLoadStubCompiler::CompileLoadConstant(String* name, Object* value) { // ----------- S t a t e ------------- // -- lr : return address + // -- r0 : key // -- sp[0] : key // -- sp[4] : receiver // ----------------------------------- Label miss; - // Check the key is the cached one - __ ldr(r2, MemOperand(sp, 0)); - __ ldr(r0, MemOperand(sp, kPointerSize)); - - __ cmp(r2, Operand(Handle(name))); + // Check the key is the cached one. + __ cmp(r0, Operand(Handle(name))); __ b(ne, &miss); - GenerateLoadConstant(receiver, holder, r0, r3, r1, value, name, &miss); + __ ldr(r1, MemOperand(sp, kPointerSize)); // Receiver. + GenerateLoadConstant(receiver, holder, r1, r2, r3, value, name, &miss); __ bind(&miss); GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC); @@ -1904,27 +1903,26 @@ Object* KeyedLoadStubCompiler::CompileLoadInterceptor(JSObject* receiver, String* name) { // ----------- S t a t e ------------- // -- lr : return address + // -- r0 : key // -- sp[0] : key // -- sp[4] : receiver // ----------------------------------- Label miss; - // Check the key is the cached one - __ ldr(r2, MemOperand(sp, 0)); - __ ldr(r0, MemOperand(sp, kPointerSize)); - - __ cmp(r2, Operand(Handle(name))); + // Check the key is the cached one. + __ cmp(r0, Operand(Handle(name))); __ b(ne, &miss); LookupResult lookup; LookupPostInterceptor(holder, name, &lookup); + __ ldr(r1, MemOperand(sp, kPointerSize)); // Receiver. GenerateLoadInterceptor(receiver, holder, &lookup, + r1, r0, r2, r3, - r1, name, &miss); __ bind(&miss); @@ -1937,19 +1935,18 @@ Object* KeyedLoadStubCompiler::CompileLoadInterceptor(JSObject* receiver, Object* KeyedLoadStubCompiler::CompileLoadArrayLength(String* name) { // ----------- S t a t e ------------- // -- lr : return address + // -- r0 : key // -- sp[0] : key // -- sp[4] : receiver // ----------------------------------- Label miss; - // Check the key is the cached one - __ ldr(r2, MemOperand(sp, 0)); - __ ldr(r0, MemOperand(sp, kPointerSize)); - - __ cmp(r2, Operand(Handle(name))); + // Check the key is the cached one. + __ cmp(r0, Operand(Handle(name))); __ b(ne, &miss); - GenerateLoadArrayLength(masm(), r0, r3, &miss); + __ ldr(r1, MemOperand(sp, kPointerSize)); // Receiver. + GenerateLoadArrayLength(masm(), r1, r2, &miss); __ bind(&miss); GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC); @@ -1960,19 +1957,19 @@ Object* KeyedLoadStubCompiler::CompileLoadArrayLength(String* name) { Object* KeyedLoadStubCompiler::CompileLoadStringLength(String* name) { // ----------- S t a t e ------------- // -- lr : return address + // -- r0 : key // -- sp[0] : key // -- sp[4] : receiver // ----------------------------------- Label miss; __ IncrementCounter(&Counters::keyed_load_string_length, 1, r1, r3); - __ ldr(r2, MemOperand(sp)); - __ ldr(r0, MemOperand(sp, kPointerSize)); // receiver - - __ cmp(r2, Operand(Handle(name))); + // Check the key is the cached one. + __ cmp(r0, Operand(Handle(name))); __ b(ne, &miss); - GenerateLoadStringLength(masm(), r0, r1, r3, &miss); + __ ldr(r1, MemOperand(sp, kPointerSize)); // Receiver. + GenerateLoadStringLength(masm(), r1, r2, r3, &miss); __ bind(&miss); __ DecrementCounter(&Counters::keyed_load_string_length, 1, r1, r3); @@ -1986,6 +1983,7 @@ Object* KeyedLoadStubCompiler::CompileLoadStringLength(String* name) { Object* KeyedLoadStubCompiler::CompileLoadFunctionPrototype(String* name) { // ----------- S t a t e ------------- // -- lr : return address + // -- r0 : key // -- sp[0] : key // -- sp[4] : receiver // ----------------------------------- diff --git a/src/arm/virtual-frame-arm.cc b/src/arm/virtual-frame-arm.cc index 2c4cad1..7c935fc 100644 --- a/src/arm/virtual-frame-arm.cc +++ b/src/arm/virtual-frame-arm.cc @@ -321,6 +321,7 @@ void VirtualFrame::CallStoreIC(Handle name, bool is_contextual) { void VirtualFrame::CallKeyedLoadIC() { Handle ic(Builtins::builtin(Builtins::KeyedLoadIC_Initialize)); + SpillAllButCopyTOSToR0(); CallCodeObject(ic, RelocInfo::CODE_TARGET, 0); } -- 2.7.4