/[MITgcm]/MITgcm/eesupp/src/fool_the_compiler.F
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Contents of /MITgcm/eesupp/src/fool_the_compiler.F

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Revision 1.10 - (show annotations) (download)
Tue Jul 15 22:00:28 2014 UTC (9 years, 9 months ago) by jmc
Branch: MAIN
CVS Tags: checkpoint65z, checkpoint65x, checkpoint65y, checkpoint65r, checkpoint65s, checkpoint65p, checkpoint65q, checkpoint65v, checkpoint65w, checkpoint65t, checkpoint65u, checkpoint65j, checkpoint65k, checkpoint65h, checkpoint65i, checkpoint65n, checkpoint65l, checkpoint65m, checkpoint65b, checkpoint65c, checkpoint65a, checkpoint65f, checkpoint65g, checkpoint65d, checkpoint65e, checkpoint65, checkpoint66g, checkpoint66f, checkpoint66e, checkpoint66d, checkpoint66c, checkpoint66b, checkpoint66a, checkpoint66o, checkpoint66n, checkpoint66m, checkpoint66l, checkpoint66k, checkpoint66j, checkpoint66i, checkpoint66h, checkpoint65o, HEAD
Changes since 1.9: +26 -3 lines
new version "FOOL_THE_COMPILER_RL" with _RL argument

1 C $Header: /u/gcmpack/MITgcm/eesupp/src/fool_the_compiler.F,v 1.9 2009/08/02 20:16:14 jmc Exp $
2 C $Name: $
3
4 #include "CPP_EEOPTIONS.h"
5
6 C-- File fool_the_compiler.F: Routines to prevent compiler to skip pieces of code
7 C-- Contents
8 C-- o FOOL_THE_COMPILER
9 C-- o FOOL_THE_COMPILER_R8
10 C-- o FOOL_THE_COMPILER_RL
11
12 C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
13 CBOP
14
15 C !ROUTINE: FOOL_THE_COMPILER
16
17 C !INTERFACE:
18 SUBROUTINE FOOL_THE_COMPILER( foolishArg )
19 C !DESCRIPTION:
20 C *=================================================================*
21 C | SUBROUTINE FOOL\_THE\_COMPILER
22 C | o Dummy routine used to supress compiler behavior.
23 C *=================================================================*
24 C | Routine is used to stop compiler optimizations in which global
25 C | data is held in a register while it is updated by a separate
26 C | thread. Calling this routine introduces the possibility of side
27 C | effects on global data ensuring that memory locs. are reread.
28 C *=================================================================*
29 IMPLICIT NONE
30 CEOP
31 INTEGER foolishArg
32 RETURN
33 END
34 C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
35 CBOP
36
37 C !ROUTINE: FOOL_THE_COMPILER_R8
38
39 C !INTERFACE:
40 SUBROUTINE FOOL_THE_COMPILER_R8( foolishArg )
41 C !DESCRIPTION:
42 C *=================================================================*
43 C | SUBROUTINE FOOL\_THE\_COMPILER\_R8
44 C | o Dummy routine used to supress compiler behavior.
45 C *=================================================================*
46 C | Routine is used to stop compiler optimizations in which global
47 C | data is held in a register while it is updated by a separate
48 C | thread. Calling this routine introduces the possibility of side
49 C | effects on global data ensuring that memory locs. are reread.
50 C *=================================================================*
51 IMPLICIT NONE
52 CEOP
53 Real*8 foolishArg
54 RETURN
55 END
56 C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
57 CBOP
58
59 C !ROUTINE: FOOL_THE_COMPILER_RL
60
61 C !INTERFACE:
62 SUBROUTINE FOOL_THE_COMPILER_RL( foolishArg )
63 C !DESCRIPTION:
64 C *=================================================================*
65 C | SUBROUTINE FOOL\_THE\_COMPILER\_RL
66 C | o Dummy routine used to supress compiler behavior.
67 C *=================================================================*
68 C | Routine is used to stop compiler optimizations in which global
69 C | data is held in a register while it is updated by a separate
70 C | thread. Calling this routine introduces the possibility of side
71 C | effects on global data ensuring that memory locs. are reread.
72 C *=================================================================*
73 IMPLICIT NONE
74 CEOP
75 _RL foolishArg
76 RETURN
77 END

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