[Bug tdep/11251] New: Can't print $mm0 in 64bit

["hjl dot tools at gmail dot com" <sourceware-bugzilla at sourceware dot org>]

On Linux/ia32, I can do



(gdb) r
Starting program: /export/home/hjl/bugs/gdb/avx/32 

Breakpoint 1, main () at arg-1.c:25
25	  test (n1, n2, n3);
Missing separate debuginfos, use: debuginfo-install glibc-2.11.1-1.6.f12.i686
(gdb) p $mm0
$1 = {uint64 = 0, v2_int32 = {0, 0}, v4_int16 = {0, 0, 0, 0}, v8_int8 = {0, 0, 
    0, 0, 0, 0, 0, 0}}
(gdb) 

But on Linux/x86-64, I got

(gdb) r
Starting program: /export/home/hjl/bugs/gdb/avx/64 

Breakpoint 1, main () at arg-1.c:25
25	  test (n1, n2, n3);
Missing separate debuginfos, use: debuginfo-install glibc-2.11.1-1.6.f12.x86_64
(gdb) p $mm0
$2 = void
(gdb)

-- 
           Summary: Can't print $mm0 in 64bit
           Product: gdb
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tdep
        AssignedTo: unassigned at sourceware dot org
        ReportedBy: hjl dot tools at gmail dot com
                CC: gdb-prs at sourceware dot org
GCC target triplet: x86_64-*-linux-gnu


http://sourceware.org/bugzilla/show_bug.cgi?id=11251

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