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Unified Diff: src/x64/fast-codegen-x64.cc

Issue 3152016: Remove experimental fast-codegen. We are no longer working on this (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: Created 10 years, 4 months ago
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Index: src/x64/fast-codegen-x64.cc
===================================================================
--- src/x64/fast-codegen-x64.cc (revision 5256)
+++ src/x64/fast-codegen-x64.cc (working copy)
@@ -1,250 +0,0 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-// * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-// * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following
-// disclaimer in the documentation and/or other materials provided
-// with the distribution.
-// * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived
-// from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#include "v8.h"
-
-#if defined(V8_TARGET_ARCH_X64)
-
-#include "codegen-inl.h"
-#include "fast-codegen.h"
-#include "scopes.h"
-
-namespace v8 {
-namespace internal {
-
-#define __ ACCESS_MASM(masm())
-
-Register FastCodeGenerator::accumulator0() { return rax; }
-Register FastCodeGenerator::accumulator1() { return rdx; }
-Register FastCodeGenerator::scratch0() { return rcx; }
-Register FastCodeGenerator::scratch1() { return rdi; }
-Register FastCodeGenerator::receiver_reg() { return rbx; }
-Register FastCodeGenerator::context_reg() { return rsi; }
-
-
-void FastCodeGenerator::EmitLoadReceiver() {
- // Offset 2 is due to return address and saved frame pointer.
- int index = 2 + scope()->num_parameters();
- __ movq(receiver_reg(), Operand(rbp, index * kPointerSize));
-}
-
-
-void FastCodeGenerator::EmitGlobalVariableLoad(Handle<Object> cell) {
- ASSERT(!destination().is(no_reg));
- ASSERT(cell->IsJSGlobalPropertyCell());
-
- __ Move(destination(), cell);
- __ movq(destination(),
- FieldOperand(destination(), JSGlobalPropertyCell::kValueOffset));
- if (FLAG_debug_code) {
- __ Cmp(destination(), Factory::the_hole_value());
- __ Check(not_equal, "DontDelete cells can't contain the hole");
- }
-
- // The loaded value is not known to be a smi.
- clear_as_smi(destination());
-}
-
-
-void FastCodeGenerator::EmitThisPropertyStore(Handle<String> name) {
- LookupResult lookup;
- info()->receiver()->Lookup(*name, &lookup);
-
- ASSERT(lookup.holder() == *info()->receiver());
- ASSERT(lookup.type() == FIELD);
- Handle<Map> map(Handle<HeapObject>::cast(info()->receiver())->map());
- int index = lookup.GetFieldIndex() - map->inobject_properties();
- int offset = index * kPointerSize;
-
- // We will emit the write barrier unless the stored value is statically
- // known to be a smi.
- bool needs_write_barrier = !is_smi(accumulator0());
-
- // Perform the store. Negative offsets are inobject properties.
- if (offset < 0) {
- offset += map->instance_size();
- __ movq(FieldOperand(receiver_reg(), offset), accumulator0());
- if (needs_write_barrier) {
- // Preserve receiver from write barrier.
- __ movq(scratch0(), receiver_reg());
- }
- } else {
- offset += FixedArray::kHeaderSize;
- __ movq(scratch0(),
- FieldOperand(receiver_reg(), JSObject::kPropertiesOffset));
- __ movq(FieldOperand(scratch0(), offset), accumulator0());
- }
-
- if (needs_write_barrier) {
- if (destination().is(no_reg)) {
- // After RecordWrite accumulator0 is only accidently a smi, but it is
- // already marked as not known to be one.
- __ RecordWrite(scratch0(), offset, accumulator0(), scratch1());
- } else {
- // Copy the value to the other accumulator to preserve a copy from the
- // write barrier. One of the accumulators is available as a scratch
- // register. Neither is a smi.
- __ movq(accumulator1(), accumulator0());
- clear_as_smi(accumulator1());
- Register value_scratch = other_accumulator(destination());
- __ RecordWrite(scratch0(), offset, value_scratch, scratch1());
- }
- } else if (destination().is(accumulator1())) {
- __ movq(accumulator1(), accumulator0());
- // Is a smi because we do not need the write barrier.
- set_as_smi(accumulator1());
- }
-}
-
-
-void FastCodeGenerator::EmitThisPropertyLoad(Handle<String> name) {
- ASSERT(!destination().is(no_reg));
- LookupResult lookup;
- info()->receiver()->Lookup(*name, &lookup);
-
- ASSERT(lookup.holder() == *info()->receiver());
- ASSERT(lookup.type() == FIELD);
- Handle<Map> map(Handle<HeapObject>::cast(info()->receiver())->map());
- int index = lookup.GetFieldIndex() - map->inobject_properties();
- int offset = index * kPointerSize;
-
- // Perform the load. Negative offsets are inobject properties.
- if (offset < 0) {
- offset += map->instance_size();
- __ movq(destination(), FieldOperand(receiver_reg(), offset));
- } else {
- offset += FixedArray::kHeaderSize;
- __ movq(scratch0(),
- FieldOperand(receiver_reg(), JSObject::kPropertiesOffset));
- __ movq(destination(), FieldOperand(scratch0(), offset));
- }
-
- // The loaded value is not known to be a smi.
- clear_as_smi(destination());
-}
-
-
-void FastCodeGenerator::EmitBitOr() {
- if (is_smi(accumulator0()) && is_smi(accumulator1())) {
- // If both operands are known to be a smi then there is no need to check
- // the operands or result.
- if (destination().is(no_reg)) {
- __ or_(accumulator1(), accumulator0());
- } else {
- // Leave the result in the destination register. Bitwise or is
- // commutative.
- __ or_(destination(), other_accumulator(destination()));
- }
- } else {
- // Left is in accumulator1, right in accumulator0.
- if (destination().is(accumulator0())) {
- __ movq(scratch0(), accumulator0());
- __ or_(destination(), accumulator1()); // Or is commutative.
- Label* bailout =
- info()->AddBailout(accumulator1(), scratch0()); // Left, right.
- __ JumpIfNotSmi(destination(), bailout);
- } else if (destination().is(accumulator1())) {
- __ movq(scratch0(), accumulator1());
- __ or_(destination(), accumulator0());
- Label* bailout = info()->AddBailout(scratch0(), accumulator0());
- __ JumpIfNotSmi(destination(), bailout);
- } else {
- ASSERT(destination().is(no_reg));
- __ movq(scratch0(), accumulator1());
- __ or_(scratch0(), accumulator0());
- Label* bailout = info()->AddBailout(accumulator1(), accumulator0());
- __ JumpIfNotSmi(scratch0(), bailout);
- }
- }
-
- // If we didn't bailout, the result (in fact, both inputs too) is known to
- // be a smi.
- set_as_smi(accumulator0());
- set_as_smi(accumulator1());
-}
-
-
-void FastCodeGenerator::Generate(CompilationInfo* compilation_info) {
- ASSERT(info_ == NULL);
- info_ = compilation_info;
- Comment cmnt(masm_, "[ function compiled by fast code generator");
-
- // Save the caller's frame pointer and set up our own.
- Comment prologue_cmnt(masm(), ";; Prologue");
- __ push(rbp);
- __ movq(rbp, rsp);
- __ push(rsi); // Context.
- __ push(rdi); // Closure.
- // Note that we keep a live register reference to esi (context) at this
- // point.
-
- Label* bailout_to_beginning = info()->AddBailout();
- // Receiver (this) is allocated to a fixed register.
- if (info()->has_this_properties()) {
- Comment cmnt(masm(), ";; MapCheck(this)");
- if (FLAG_print_ir) {
- PrintF("MapCheck(this)\n");
- }
- ASSERT(info()->has_receiver() && info()->receiver()->IsHeapObject());
- Handle<HeapObject> object = Handle<HeapObject>::cast(info()->receiver());
- Handle<Map> map(object->map());
- EmitLoadReceiver();
- __ CheckMap(receiver_reg(), map, bailout_to_beginning, false);
- }
-
- // If there is a global variable access check if the global object is the
- // same as at lazy-compilation time.
- if (info()->has_globals()) {
- Comment cmnt(masm(), ";; MapCheck(GLOBAL)");
- if (FLAG_print_ir) {
- PrintF("MapCheck(GLOBAL)\n");
- }
- ASSERT(info()->has_global_object());
- Handle<Map> map(info()->global_object()->map());
- __ movq(scratch0(), CodeGenerator::GlobalObject());
- __ CheckMap(scratch0(), map, bailout_to_beginning, true);
- }
-
- VisitStatements(info()->function()->body());
-
- Comment return_cmnt(masm(), ";; Return(<undefined>)");
- if (FLAG_print_ir) {
- PrintF("Return(<undefined>)\n");
- }
- __ LoadRoot(rax, Heap::kUndefinedValueRootIndex);
- __ movq(rsp, rbp);
- __ pop(rbp);
- __ ret((scope()->num_parameters() + 1) * kPointerSize);
-}
-
-
-#undef __
-
-
-} } // namespace v8::internal
-
-#endif // V8_TARGET_ARCH_X64
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