target/6362: mips-irix6 gcc-3.1 C testsuite failure with -mips4 in compile/920501-4.c

[ghazi@caip.rutgers.edu]

>Number:         6362
>Category:       target
>Synopsis:       mips-irix6 gcc-3.1 C testsuite failure with -mips4 in compile/920501-4.c
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          ice-on-legal-code
>Submitter-Id:   net
>Arrival-Date:   Thu Apr 18 09:56:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Kaveh Ghazi
>Release:        gcc version 3.1 20020417 (prerelease)
>Organization:
>Environment:
mips-sgi-irix6.2 native as/ld
>Description:
When I run the testsuite with -mips4, I get this additional failure:

 > FAIL: gcc.c-torture/compile/920501-4.c,  -O1  

See: http://gcc.gnu.org/ml/gcc-testresults/2002-04/msg00671.html

When I compile it by hand, I get:
 > xgcc -mips4 -c -O 920501-4.c
 > 920501-4.c: In function `foo':
 > 920501-4.c:49: Internal compiler error in gen_reload_outcc, at insn-emit.c:7493

This failure does not occur with e.g. gcc-2.8.1

>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
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