fortran/2661: Testsuite failure g77.f-torture/execute/970625-2.f - irix6.5 -mabi=64

[David.Billinghurst@riotinto.com]

>Number:         2661
>Category:       fortran
>Synopsis:       Testsuite failure g77.f-torture/execute/970625-2.f - irix6.5 -mabi=64
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Apr 26 18:56:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     David Billinghurst
>Release:        gcc 3.1
>Organization:
>Environment:
mips-sgi-irix6.5
>Description:
New g77 testsuite failure on trunk from early April with -mabi=64

FAIL: g77.f-torture/execute/970625-2.f compilation,  -O2

Error message is:
/exd4/billingd/src/gcc-mainline/gcc/testsuite/g77.f-torture/execute/970625-2.f: In program `subroutine':
/exd4/billingd/src/gcc-mainline/gcc/testsuite/g77.f-torture/execute/970625-2.f:50: Internal compiler error in subreg_regno_offset, at rtlanal.c:2692


Also fails with compiler options:
* -O3 -fomit-frame-pointer 
* -O3 -fomit-frame-pointer -funroll-loops 
* -O3-fomit-frame-pointer -funroll-all-loops -finline-functions 
* -O3 -g 
* -Os 

Does not fail with:
default -n32 ABI 
-mabi=64 with -O0 or -O1

CVS test results show:
* passes on 20010403
* failed on 20010404

I will try find exactly when the problem started.
>How-To-Repeat:
g77 -mabi=64 -O2 970625-2.f 
>Fix:

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