Files
sdk/runtime/vm/runtime_entry_x64.cc
T
Ryan Macnak 41a9c38433 [vm, compiler] Shrink deopt stub and runtime call sequences.
dart2js release
AOT X64 Instructions(CodeSize): 10171456 -> 10090272 (-0.798%)
AOT ARM Instructions(CodeSize): 10814976 -> 10708512 (-0.984%)
AOT ARM64 Instructions(CodeSize): 11751328 -> 11646464 (-0.892%)
JIT X64 Instructions(CodeSize): 14296224 -> 13593536 (-4.92%)
JIT ARM Instructions(CodeSize): 16034352 -> 15685664 (-2.17%)
JIT ARM64 Instructions(CodeSize): 17207968 -> 16901504 (-1.78%)

Bug: https://github.com/dart-lang/sdk/issues/26033
Change-Id: Ic41a80fe8a90973811e74471e13f3edb6e4bffb6
Reviewed-on: https://dart-review.googlesource.com/c/77987
Reviewed-by: Alexander Markov <alexmarkov@google.com>
2018-10-08 17:44:43 +00:00

46 lines
1.5 KiB
C++

// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#include "vm/globals.h"
#if defined(TARGET_ARCH_X64)
#include "vm/runtime_entry.h"
#include "vm/compiler/assembler/assembler.h"
#include "vm/stub_code.h"
namespace dart {
#define __ assembler->
uword RuntimeEntry::GetEntryPoint() const {
return reinterpret_cast<uword>(function());
}
#if !defined(DART_PRECOMPILED_RUNTIME)
// Generate code to call into the stub which will call the runtime
// function. Input for the stub is as follows:
// RSP : points to the arguments and return value array.
// RBX : address of the runtime function to call.
// R10 : number of arguments to the call.
void RuntimeEntry::Call(Assembler* assembler, intptr_t argument_count) const {
if (is_leaf()) {
ASSERT(argument_count == this->argument_count());
COMPILE_ASSERT(CallingConventions::kVolatileCpuRegisters & (1 << RAX));
__ movq(RAX, Address(THR, Thread::OffsetFromThread(this)));
__ CallCFunction(RAX);
} else {
// Argument count is not checked here, but in the runtime entry for a more
// informative error message.
__ movq(RBX, Address(THR, Thread::OffsetFromThread(this)));
__ LoadImmediate(R10, Immediate(argument_count));
__ CallToRuntime();
}
}
#endif // !defined(DART_PRECOMPILED_RUNTIME)
} // namespace dart
#endif // defined TARGET_ARCH_X64