c/7047: -march=2.0 often fails

[L-marks@nwu.edu]

>Number:         7047
>Category:       c
>Synopsis:       -march=2.0 often fails
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Jun 16 06:46:27 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     L. D. Marks
>Release:        gcc 3.1
>Organization:
>Environment:
HPUX
>Description:
The PA 2.0 option -march=2.0 often fails, even with gcc code itself../../gcc-3.1/gcc/sched-rgn.c: In function `init_ready_list':
Example of output
../../gcc-3.1/gcc/sched-rgn.c:2569: insn does not satisfy its constraints:
(insn 1090 1088 106 (set (reg:SI 69 %fr22R)
        (mem/f:SI (lo_sum:SI (reg/f:SI 5 %r5 [142])
                (symbol_ref:SI ("rgn_nr_edges"))) [3 rgn_nr_edges+0 S4 A32])) 68 {*pa.md:2088} (nil)
    (nil))
../../gcc-3.1/gcc/sched-rgn.c:2569: Internal compiler error in reload_cse_simplify_operands, at reload1.c:8368
>How-To-Repeat:
In stage 2 (or 1 or other code)
stage2/xgcc -Bstage2/ -B/usr/local/hppa2.0-hp-hpux10.20/bin/ -c -DIN_GCC    -O3 -fomit-frame-pointer -march=2.0 -mlinker-opt -D_HPUX_SOURCE -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wtraditional -pedantic -Wno-long-long  -DHAVE_CONFIG_H    -I. -I. -I../../gcc-3.1/gcc -I../../gcc-3.1/gcc/. -I../../gcc-3.1/gcc/config -I../../gcc-3.1/gcc/../include ../../gcc-3.1/gcc/sched-rgn.c -o sched-rgn.o
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: