target/5378: ICE: unrecognizable insn prefetch

[ritzert@t-online.de]

>Number:         5378
>Category:       target
>Synopsis:       ICE: unrecognizable insn prefetch
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Jan 14 10:46:02 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     ritzert@t-online.de
>Release:        gcc version 3.1 20020114 (experimental)
>Organization:
>Environment:
Linux 2.4.16, Athlon
>Description:
# gcc -c a.c -fprefetch-loop-arrays -march=athlon -O2
a.c: In function `KDE_IceOpenConnection':
a.c:15: unrecognizable insn:
(insn 154 81 31 (prefetch (plus:SI (reg/f:SI 72)
            (const_int 384 [0x180]))
        (const_int 1 [0x1])
        (const_int 3 [0x3])) -1 (nil)
    (nil))
a.c:15: Internal compiler error in extract_insn, at recog.c:2129
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
>How-To-Repeat:
Compile the attached file with
gcc -c a.c -fprefetch-loop-arrays -march=athlon -O2
>Fix:
Do not use optimization or -fprefetch-loop-arrays.
>Release-Note:
>Audit-Trail:
>Unformatted:
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