[Bug rtl-optimization/46894] New: [4.6 Regression] vector fails on powerpc-darwin9

[iains at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46894

           Summary: [4.6 Regression] vector fails on powerpc-darwin9
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: iains@gcc.gnu.org
                CC: rth@gcc.gnu.org
              Host: powerpc-apple-darwin9
            Target: powerpc-apple-darwin9
             Build: powerpc-apple-darwin9


Created attachment 22716
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22716
asm files for r165239 (OK) and r165240 (fails) for reduced testcase

the commit of :

http://gcc.gnu.org/ml/gcc-cvs/2010-10/msg00423.html

caused:

FAIL: gcc.dg/compat/vector-1 c_compat_x_tst.o-c_compat_y_tst.o execute 
FAIL: gcc.dg/compat/vector-2 c_compat_x_tst.o-c_compat_y_tst.o execute 
FAIL: tmpdir-gcc.dg-struct-layout-1/t025 c_compat_x_tst.o-c_compat_y_tst.o
execute 
FAIL: tmpdir-gcc.dg-struct-layout-1/t027 c_compat_x_tst.o-c_compat_y_tst.o
execute 
FAIL: tmpdir-gcc.dg-struct-layout-1/t028 c_compat_x_tst.o-c_compat_y_tst.o
execute 

at m32 on powerpc-darwin9 [tests are OK at m64].

I've reduced the first fail in gcc.dg/compat/vector-1

 >> TEST (32, qi, 90)

 (attaching asm files).
There are no changes in the .i files between the revisions 165239 and 165240.