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comparison src/cpu/x86/vm/sharedRuntime_x86_64.cpp @ 9112:6c33b2076d7c

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minor HotSpot deoptimization cleanups
author Christian Haeubl <haeubl@ssw.jku.at>
date Mon, 08 Apr 2013 17:48:46 +0200
parents b9a918201d47
children 01958088b87d
comparison
equal deleted inserted replaced
8892:2c0c708a0ad6 9112:6c33b2076d7c
3328 // Normal deoptimization. Save exec mode for unpack_frames. 3328 // Normal deoptimization. Save exec mode for unpack_frames.
3329 __ movl(r14, Deoptimization::Unpack_deopt); // callee-saved 3329 __ movl(r14, Deoptimization::Unpack_deopt); // callee-saved
3330 __ jmp(cont); 3330 __ jmp(cont);
3331 3331
3332 int reexecute_offset = __ pc() - start; 3332 int reexecute_offset = __ pc() - start;
3333 #ifdef GRAALVM
3334 // Graal does not use this kind of deoptimization
3335 __ should_not_reach_here();
3336 #endif
3333 3337
3334 // Reexecute case 3338 // Reexecute case
3335 // return address is the pc describes what bci to do re-execute at 3339 // return address is the pc describes what bci to do re-execute at
3336 3340
3337 // No need to update map as each call to save_live_registers will produce identical oopmap 3341 // No need to update map as each call to save_live_registers will produce identical oopmap
3338 (void) RegisterSaver::save_live_registers(masm, 0, &frame_size_in_words); 3342 (void) RegisterSaver::save_live_registers(masm, 0, &frame_size_in_words);
3339 3343
3340 __ movl(r14, Deoptimization::Unpack_reexecute); // callee-saved 3344 __ movl(r14, Deoptimization::Unpack_reexecute); // callee-saved
3341 __ jmp(cont); 3345 __ jmp(cont);
3346
3347 #ifdef GRAAL
3348 int implicit_exception_uncommon_trap_offset = __ pc() - start;
3349 // pc where the exception happened is in ScratchA
3350 __ pushptr(Address(r15_thread, in_bytes(JavaThread::ScratchA_offset())));
3351
3352 int uncommon_trap_offset = __ pc() - start;
3353
3354 // Save everything in sight.
3355 RegisterSaver::save_live_registers(masm, 0, &frame_size_in_words);
3356 // fetch_unroll_info needs to call last_java_frame()
3357 __ set_last_Java_frame(noreg, noreg, NULL);
3358
3359 __ movl(c_rarg1, Address(r15_thread, in_bytes(ThreadShadow::pending_deoptimization_offset())));
3360 __ movl(Address(r15_thread, in_bytes(ThreadShadow::pending_deoptimization_offset())), -1);
3361
3362 __ movl(r14, (int32_t)Deoptimization::Unpack_reexecute);
3363 __ mov(c_rarg0, r15_thread);
3364 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, Deoptimization::uncommon_trap)));
3365 oop_maps->add_gc_map( __ pc()-start, map->deep_copy());
3366
3367 __ reset_last_Java_frame(false, false);
3368
3369 Label after_fetch_unroll_info_call;
3370 __ jmp(after_fetch_unroll_info_call);
3371 #endif // GRAAL
3342 3372
3343 int exception_offset = __ pc() - start; 3373 int exception_offset = __ pc() - start;
3344 3374
3345 // Prolog for exception case 3375 // Prolog for exception case
3346 3376
3393 __ testptr(rax, rax); 3423 __ testptr(rax, rax);
3394 __ jcc(Assembler::zero, no_pending_exception); 3424 __ jcc(Assembler::zero, no_pending_exception);
3395 __ stop("must not have pending exception here"); 3425 __ stop("must not have pending exception here");
3396 __ bind(no_pending_exception); 3426 __ bind(no_pending_exception);
3397 #endif 3427 #endif
3398
3399 #ifdef GRAAL
3400 __ jmp(cont);
3401
3402 int implicit_exception_uncommon_trap_offset = __ pc() - start;
3403 // pc where the exception happened is in ScratchA
3404 __ pushptr(Address(r15_thread, in_bytes(JavaThread::ScratchA_offset())));
3405
3406 int uncommon_trap_offset = __ pc() - start;
3407
3408 // Save everything in sight.
3409 RegisterSaver::save_live_registers(masm, 0, &frame_size_in_words);
3410 // fetch_unroll_info needs to call last_java_frame()
3411 __ set_last_Java_frame(noreg, noreg, NULL);
3412
3413 __ movl(c_rarg1, Address(r15_thread, in_bytes(ThreadShadow::pending_deoptimization_offset())));
3414 __ movl(Address(r15_thread, in_bytes(ThreadShadow::pending_deoptimization_offset())), -1);
3415
3416 __ movl(r14, (int32_t)Deoptimization::Unpack_reexecute);
3417 __ mov(c_rarg0, r15_thread);
3418 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, Deoptimization::uncommon_trap)));
3419 oop_maps->add_gc_map( __ pc()-start, map->deep_copy());
3420
3421 __ reset_last_Java_frame(false, false);
3422
3423 Label after_fetch_unroll_info_call;
3424 __ jmp(after_fetch_unroll_info_call);
3425 #endif // GRAAL
3426 3428
3427 __ bind(cont); 3429 __ bind(cont);
3428 3430
3429 // Call C code. Need thread and this frame, but NOT official VM entry 3431 // Call C code. Need thread and this frame, but NOT official VM entry
3430 // crud. We cannot block on this call, no GC can happen. 3432 // crud. We cannot block on this call, no GC can happen.