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InvokeWithException: make next successor a special begin node which has the same locationidentity as the invoke InvokeWithExceptionNode has the unpleasant property that it is a ControlSplit and MemoryCheckPoint at the same time. In terms of scheduling, a node cannot be placed after a ControlSplit node as it denotes the end of a block. Thus, instead of connecting a FloatingReadNode to the InvokeWithException node directly (as lastLocationAccess), we point rather to the BeginNode (non-exceptional case) or ExceptionBeginNode. To preserve consistency regarding memory dependencies, the former node must be also a MemoryCheckPoint.
author Bernhard Urban <bernhard.urban@jku.at>
date Wed, 02 Oct 2013 11:16:21 +0200
parents 980532a806a5
children de6a9e811145
line wrap: on
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!!
!! Copyright (c) 2005, 2008, Oracle and/or its affiliates. All rights reserved.
!! 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.
!!

    !! Possibilities:
    !! -- membar
    !! -- CAS (SP + BIAS, G0, G0)
    !! -- wr %g0, %asi

    .global SpinPause
    .align  32
SpinPause:
    retl
    mov %g0, %o0


 
    .globl _Copy_conjoint_jlongs_atomic
    .align 32
    .global   _Copy_conjoint_jlongs_atomic
 _Copy_conjoint_jlongs_atomic:
         cmp     %o0, %o1
         bleu    4f
         sll     %o2, 3, %o4
         ba      2f
    1:
         subcc   %o4, 8, %o4
         std     %o2, [%o1]
         add     %o0, 8, %o0
         add     %o1, 8, %o1
    2:
         bge,a   1b
         ldd     [%o0], %o2
         ba      5f
         nop
    3:
         std     %o2, [%o1+%o4]
    4:
         subcc   %o4, 8, %o4
         bge,a   3b
         ldd     [%o0+%o4], %o2
    5:      
         retl
         nop
 
 
  
    .globl _raw_thread_id
    .align 32
 _raw_thread_id:
    .register %g7, #scratch
        retl
        mov     %g7, %o0
 

    .globl _flush_reg_windows
    .align 32
 _flush_reg_windows:
        ta 0x03
        retl
        mov     %fp, %o0