jdk8-mips64-public/hotspot: src/share/vm/shark/sharkBuilder.cpp@d2ede61b7a12 (annotated)

src/share/vm/shark/sharkBuilder.cpp@d2ede61b7a12 (annotated)

src/share/vm/shark/sharkBuilder.cpp

Wed, 11 Aug 2010 05:51:21 -0700

author: twisti
date: Wed, 11 Aug 2010 05:51:21 -0700
changeset 2047: d2ede61b7a12
child 2314: f95d63e2154a
permissions: -rw-r--r--

6976186: integrate Shark HotSpot changes
Summary: Shark is a JIT compiler for Zero that uses the LLVM compiler infrastructure.
Reviewed-by: kvn, twisti
Contributed-by: Gary Benson <gbenson@redhat.com>

 /*
  * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
  * Copyright 2008, 2009, 2010 Red Hat, Inc.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #include "incls/_precompiled.incl"
 #include "incls/_sharkBuilder.cpp.incl"
 using namespace llvm;
 SharkBuilder::SharkBuilder(SharkCodeBuffer* code_buffer)
   : IRBuilder<>(SharkContext::current()),
     _code_buffer(code_buffer) {
 }
 // Helpers for accessing structures
 Value* SharkBuilder::CreateAddressOfStructEntry(Value*      base,
                                                 ByteSize    offset,
                                                 const Type* type,
                                                 const char* name) {
   return CreateBitCast(CreateStructGEP(base, in_bytes(offset)), type, name);
 }
 LoadInst* SharkBuilder::CreateValueOfStructEntry(Value*      base,
                                                  ByteSize    offset,
                                                  const Type* type,
                                                  const char* name) {
   return CreateLoad(
     CreateAddressOfStructEntry(
       base, offset, PointerType::getUnqual(type)),
     name);
 }
 // Helpers for accessing arrays
 LoadInst* SharkBuilder::CreateArrayLength(Value* arrayoop) {
   return CreateValueOfStructEntry(
     arrayoop, in_ByteSize(arrayOopDesc::length_offset_in_bytes()),
     SharkType::jint_type(), "length");
 }
 Value* SharkBuilder::CreateArrayAddress(Value*      arrayoop,
                                         const Type* element_type,
                                         int         element_bytes,
                                         ByteSize    base_offset,
                                         Value*      index,
                                         const char* name) {
   Value* offset = CreateIntCast(index, SharkType::intptr_type(), false);
   if (element_bytes != 1)
     offset = CreateShl(
       offset,
       LLVMValue::intptr_constant(exact_log2(element_bytes)));
   offset = CreateAdd(
     LLVMValue::intptr_constant(in_bytes(base_offset)), offset);
   return CreateIntToPtr(
     CreateAdd(CreatePtrToInt(arrayoop, SharkType::intptr_type()), offset),
     PointerType::getUnqual(element_type),
     name);
 }
 Value* SharkBuilder::CreateArrayAddress(Value*      arrayoop,
                                         BasicType   basic_type,
                                         ByteSize    base_offset,
                                         Value*      index,
                                         const char* name) {
   return CreateArrayAddress(
     arrayoop,
     SharkType::to_arrayType(basic_type),
     type2aelembytes(basic_type),
     base_offset, index, name);
 }
 Value* SharkBuilder::CreateArrayAddress(Value*      arrayoop,
                                         BasicType   basic_type,
                                         Value*      index,
                                         const char* name) {
   return CreateArrayAddress(
     arrayoop, basic_type,
     in_ByteSize(arrayOopDesc::base_offset_in_bytes(basic_type)),
     index, name);
 }
 // Helpers for creating intrinsics and external functions.
 const Type* SharkBuilder::make_type(char type, bool void_ok) {
   switch (type) {
     // Primitive types
   case 'c':
     return SharkType::jbyte_type();
   case 'i':
     return SharkType::jint_type();
   case 'l':
     return SharkType::jlong_type();
   case 'x':
     return SharkType::intptr_type();
   case 'f':
     return SharkType::jfloat_type();
   case 'd':
     return SharkType::jdouble_type();
     // Pointers to primitive types
   case 'C':
   case 'I':
   case 'L':
   case 'X':
   case 'F':
   case 'D':
     return PointerType::getUnqual(make_type(tolower(type), false));
     // VM objects
   case 'T':
     return SharkType::thread_type();
   case 'M':
     return PointerType::getUnqual(SharkType::monitor_type());
   case 'O':
     return SharkType::oop_type();
     // Miscellaneous
   case 'v':
     assert(void_ok, "should be");
     return SharkType::void_type();
   case '1':
     return SharkType::bit_type();
   default:
     ShouldNotReachHere();
   }
 }
 const FunctionType* SharkBuilder::make_ftype(const char* params,
                                              const char* ret) {
   std::vector<const Type*> param_types;
   for (const char* c = params; *c; c++)
     param_types.push_back(make_type(*c, false));
   assert(strlen(ret) == 1, "should be");
   const Type *return_type = make_type(*ret, true);
   return FunctionType::get(return_type, param_types, false);
 }
 // Create an object representing an intrinsic or external function by
 // referencing the symbol by name.  This is the LLVM-style approach,
 // but it cannot be used on functions within libjvm.so its symbols
 // are not exported.  Note that you cannot make this work simply by
 // exporting the symbols, as some symbols have the same names as
 // symbols in the standard libraries (eg, atan2, fabs) and would
 // obscure them were they visible.
 Value* SharkBuilder::make_function(const char* name,
                                    const char* params,
                                    const char* ret) {
   return SharkContext::current().get_external(name, make_ftype(params, ret));
 }
 // Create an object representing an external function by inlining a
 // function pointer in the code.  This is not the LLVM way, but it's
 // the only way to access functions in libjvm.so and functions like
 // __kernel_dmb on ARM which is accessed via an absolute address.
 Value* SharkBuilder::make_function(address     func,
                                    const char* params,
                                    const char* ret) {
   return CreateIntToPtr(
     LLVMValue::intptr_constant((intptr_t) func),
     PointerType::getUnqual(make_ftype(params, ret)));
 }
 // VM calls
 Value* SharkBuilder::find_exception_handler() {
   return make_function(
     (address) SharkRuntime::find_exception_handler, "TIi", "i");
 }
 Value* SharkBuilder::monitorenter() {
   return make_function((address) SharkRuntime::monitorenter, "TM", "v");
 }
 Value* SharkBuilder::monitorexit() {
   return make_function((address) SharkRuntime::monitorexit, "TM", "v");
 }
 Value* SharkBuilder::new_instance() {
   return make_function((address) SharkRuntime::new_instance, "Ti", "v");
 }
 Value* SharkBuilder::newarray() {
   return make_function((address) SharkRuntime::newarray, "Tii", "v");
 }
 Value* SharkBuilder::anewarray() {
   return make_function((address) SharkRuntime::anewarray, "Tii", "v");
 }
 Value* SharkBuilder::multianewarray() {
   return make_function((address) SharkRuntime::multianewarray, "TiiI", "v");
 }
 Value* SharkBuilder::register_finalizer() {
   return make_function((address) SharkRuntime::register_finalizer, "TO", "v");
 }
 Value* SharkBuilder::safepoint() {
   return make_function((address) SafepointSynchronize::block, "T", "v");
 }
 Value* SharkBuilder::throw_ArithmeticException() {
   return make_function(
     (address) SharkRuntime::throw_ArithmeticException, "TCi", "v");
 }
 Value* SharkBuilder::throw_ArrayIndexOutOfBoundsException() {
   return make_function(
     (address) SharkRuntime::throw_ArrayIndexOutOfBoundsException, "TCii", "v");
 }
 Value* SharkBuilder::throw_ClassCastException() {
   return make_function(
     (address) SharkRuntime::throw_ClassCastException, "TCi", "v");
 }
 Value* SharkBuilder::throw_NullPointerException() {
   return make_function(
     (address) SharkRuntime::throw_NullPointerException, "TCi", "v");
 }
 // High-level non-VM calls
 Value* SharkBuilder::f2i() {
   return make_function((address) SharedRuntime::f2i, "f", "i");
 }
 Value* SharkBuilder::f2l() {
   return make_function((address) SharedRuntime::f2l, "f", "l");
 }
 Value* SharkBuilder::d2i() {
   return make_function((address) SharedRuntime::d2i, "d", "i");
 }
 Value* SharkBuilder::d2l() {
   return make_function((address) SharedRuntime::d2l, "d", "l");
 }
 Value* SharkBuilder::is_subtype_of() {
   return make_function((address) SharkRuntime::is_subtype_of, "OO", "c");
 }
 Value* SharkBuilder::current_time_millis() {
   return make_function((address) os::javaTimeMillis, "", "l");
 }
 Value* SharkBuilder::sin() {
   return make_function("llvm.sin.f64", "d", "d");
 }
 Value* SharkBuilder::cos() {
   return make_function("llvm.cos.f64", "d", "d");
 }
 Value* SharkBuilder::tan() {
   return make_function((address) ::tan, "d", "d");
 }
 Value* SharkBuilder::atan2() {
   return make_function((address) ::atan2, "dd", "d");
 }
 Value* SharkBuilder::sqrt() {
   return make_function("llvm.sqrt.f64", "d", "d");
 }
 Value* SharkBuilder::log() {
   return make_function("llvm.log.f64", "d", "d");
 }
 Value* SharkBuilder::log10() {
   return make_function("llvm.log10.f64", "d", "d");
 }
 Value* SharkBuilder::pow() {
   return make_function("llvm.pow.f64", "dd", "d");
 }
 Value* SharkBuilder::exp() {
   return make_function("llvm.exp.f64", "d", "d");
 }
 Value* SharkBuilder::fabs() {
   return make_function((address) ::fabs, "d", "d");
 }
 Value* SharkBuilder::unsafe_field_offset_to_byte_offset() {
   extern jlong Unsafe_field_offset_to_byte_offset(jlong field_offset);
   return make_function((address) Unsafe_field_offset_to_byte_offset, "l", "l");
 }
 Value* SharkBuilder::osr_migration_end() {
   return make_function((address) SharedRuntime::OSR_migration_end, "C", "v");
 }
 // Semi-VM calls
 Value* SharkBuilder::throw_StackOverflowError() {
   return make_function((address) ZeroStack::handle_overflow, "T", "v");
 }
 Value* SharkBuilder::uncommon_trap() {
   return make_function((address) SharkRuntime::uncommon_trap, "Ti", "i");
 }
 Value* SharkBuilder::deoptimized_entry_point() {
   return make_function((address) CppInterpreter::main_loop, "iT", "v");
 }
 // Native-Java transition
 Value* SharkBuilder::check_special_condition_for_native_trans() {
   return make_function(
     (address) JavaThread::check_special_condition_for_native_trans,
     "T", "v");
 }
 // Low-level non-VM calls
 // The ARM-specific code here is to work around unimplemented
 // atomic exchange and memory barrier intrinsics in LLVM.
 //
 // Delegating to external functions for these would normally
 // incur a speed penalty, but Linux on ARM is a special case
 // in that atomic operations on that platform are handled by
 // external functions anyway.  It would be *preferable* for
 // the calls to be hidden away in LLVM, but it's not hurting
 // performance so having the calls here is acceptable.
 //
 // If you are building Shark on a platform without atomic
 // exchange and/or memory barrier intrinsics then it is only
 // acceptable to mimic this approach if your platform cannot
 // perform these operations without delegating to a function.
 #ifdef ARM
 static jint zero_cmpxchg_int(volatile jint *ptr, jint oldval, jint newval) {
   return Atomic::cmpxchg(newval, ptr, oldval);
 }
 #endif // ARM
 Value* SharkBuilder::cmpxchg_int() {
   return make_function(
 #ifdef ARM
     (address) zero_cmpxchg_int,
 #else
     "llvm.atomic.cmp.swap.i32.p0i32",
 #endif // ARM
     "Iii", "i");
 }
 #ifdef ARM
 static intptr_t zero_cmpxchg_ptr(volatile intptr_t* ptr,
                                  intptr_t           oldval,
                                  intptr_t           newval) {
   return Atomic::cmpxchg_ptr(newval, ptr, oldval);
 }
 #endif // ARM
 Value* SharkBuilder::cmpxchg_ptr() {
   return make_function(
 #ifdef ARM
     (address) zero_cmpxchg_ptr,
 #else
     "llvm.atomic.cmp.swap.i" LP64_ONLY("64") NOT_LP64("32") ".p0i" LP64_ONLY("64") NOT_LP64("32"),
 #endif // ARM
     "Xxx", "x");
 }
 Value* SharkBuilder::frame_address() {
   return make_function("llvm.frameaddress", "i", "C");
 }
 Value* SharkBuilder::memory_barrier() {
   return make_function(
 #ifdef ARM
     (address) 0xffff0fa0, // __kernel_dmb
 #else
     "llvm.memory.barrier",
 #endif // ARM
     "11111", "v");
 }
 Value* SharkBuilder::memset() {
 #if SHARK_LLVM_VERSION >= 28
   // LLVM 2.8 added a fifth isVolatile field for memset
   // introduced with LLVM r100304
   return make_function("llvm.memset.i32", "Cciii", "v");
 #else
   return make_function("llvm.memset.i32", "Ccii", "v");
 #endif
 }
 Value* SharkBuilder::unimplemented() {
   return make_function((address) report_unimplemented, "Ci", "v");
 }
 Value* SharkBuilder::should_not_reach_here() {
   return make_function((address) report_should_not_reach_here, "Ci", "v");
 }
 Value* SharkBuilder::dump() {
   return make_function((address) SharkRuntime::dump, "Cx", "v");
 }
 // Public interface to low-level non-VM calls
 CallInst* SharkBuilder::CreateCmpxchgInt(Value* exchange_value,
                                          Value* dst,
                                          Value* compare_value) {
   return CreateCall3(cmpxchg_int(), dst, compare_value, exchange_value);
 }
 CallInst* SharkBuilder::CreateCmpxchgPtr(Value* exchange_value,
                                          Value* dst,
                                          Value* compare_value) {
   return CreateCall3(cmpxchg_ptr(), dst, compare_value, exchange_value);
 }
 CallInst* SharkBuilder::CreateGetFrameAddress() {
   return CreateCall(frame_address(), LLVMValue::jint_constant(0));
 }
 CallInst *SharkBuilder::CreateMemoryBarrier(int flags) {
   Value *args[] = {
     LLVMValue::bit_constant((flags & BARRIER_LOADLOAD) ? 1 : 0),
     LLVMValue::bit_constant((flags & BARRIER_LOADSTORE) ? 1 : 0),
     LLVMValue::bit_constant((flags & BARRIER_STORELOAD) ? 1 : 0),
     LLVMValue::bit_constant((flags & BARRIER_STORESTORE) ? 1 : 0),
     LLVMValue::bit_constant(1)};
   return CreateCall(memory_barrier(), args, args + 5);
 }
 CallInst* SharkBuilder::CreateMemset(Value* dst,
                                      Value* value,
                                      Value* len,
                                      Value* align) {
 #if SHARK_LLVM_VERSION >= 28
   return CreateCall5(memset(), dst, value, len, align,
                      LLVMValue::jint_constant(0));
 #else
   return CreateCall4(memset(), dst, value, len, align);
 #endif
 }
 CallInst* SharkBuilder::CreateUnimplemented(const char* file, int line) {
   return CreateCall2(
     unimplemented(),
     CreateIntToPtr(
       LLVMValue::intptr_constant((intptr_t) file),
       PointerType::getUnqual(SharkType::jbyte_type())),
     LLVMValue::jint_constant(line));
 }
 CallInst* SharkBuilder::CreateShouldNotReachHere(const char* file, int line) {
   return CreateCall2(
     should_not_reach_here(),
     CreateIntToPtr(
       LLVMValue::intptr_constant((intptr_t) file),
       PointerType::getUnqual(SharkType::jbyte_type())),
     LLVMValue::jint_constant(line));
 }
 #ifndef PRODUCT
 CallInst* SharkBuilder::CreateDump(Value* value) {
   const char *name;
   if (value->hasName())
     // XXX this leaks, but it's only debug code
     name = strdup(value->getName().str().c_str());
   else
     name = "unnamed_value";
   if (isa<PointerType>(value->getType()))
     value = CreatePtrToInt(value, SharkType::intptr_type());
   else if (value->getType()->
 #if SHARK_LLVM_VERSION >= 27
            isIntegerTy()
 #else
            isInteger()
 #endif
            )
     value = CreateIntCast(value, SharkType::intptr_type(), false);
   else
     Unimplemented();
   return CreateCall2(
     dump(),
     CreateIntToPtr(
       LLVMValue::intptr_constant((intptr_t) name),
       PointerType::getUnqual(SharkType::jbyte_type())),
     value);
 }
 #endif // PRODUCT
 // HotSpot memory barriers
 void SharkBuilder::CreateUpdateBarrierSet(BarrierSet* bs, Value* field) {
   if (bs->kind() != BarrierSet::CardTableModRef)
     Unimplemented();
   CreateStore(
     LLVMValue::jbyte_constant(CardTableModRefBS::dirty_card),
     CreateIntToPtr(
       CreateAdd(
         LLVMValue::intptr_constant(
           (intptr_t) ((CardTableModRefBS *) bs)->byte_map_base),
         CreateLShr(
           CreatePtrToInt(field, SharkType::intptr_type()),
           LLVMValue::intptr_constant(CardTableModRefBS::card_shift))),
       PointerType::getUnqual(SharkType::jbyte_type())));
 }
 // Helpers for accessing the code buffer
 Value* SharkBuilder::code_buffer_address(int offset) {
   return CreateAdd(
     code_buffer()->base_pc(),
     LLVMValue::intptr_constant(offset));
 }
 Value* SharkBuilder::CreateInlineOop(jobject object, const char* name) {
   return CreateLoad(
     CreateIntToPtr(
       code_buffer_address(code_buffer()->inline_oop(object)),
       PointerType::getUnqual(SharkType::oop_type())),
     name);
 }
 Value* SharkBuilder::CreateInlineData(void*       data,
                                       size_t      size,
                                       const Type* type,
                                       const char* name) {
   return CreateIntToPtr(
     code_buffer_address(code_buffer()->inline_data(data, size)),
     type,
     name);
 }
 // Helpers for creating basic blocks.
 BasicBlock* SharkBuilder::GetBlockInsertionPoint() const {
   BasicBlock *cur = GetInsertBlock();
   // BasicBlock::Create takes an insertBefore argument, so
   // we need to find the block _after_ the current block
   Function::iterator iter = cur->getParent()->begin();
   Function::iterator end  = cur->getParent()->end();
   while (iter != end) {
     iter++;
     if (&*iter == cur) {
       iter++;
       break;
     }
   }
   if (iter == end)
     return NULL;
   else
     return iter;
 }
 BasicBlock* SharkBuilder::CreateBlock(BasicBlock* ip, const char* name) const {
   return BasicBlock::Create(
     SharkContext::current(), name, GetInsertBlock()->getParent(), ip);
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/shark/sharkBuilder.cpp@d2ede61b7a12 (annotated)

src/share/vm/shark/sharkBuilder.cpp