[Bug testsuite/28504] FAIL: gdb.arch/i386-sse.exp: check contents of data[2]

["vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=28504

--- Comment #3 from Tom de Vries <vries at gcc dot gnu.org> ---
Hit this again, on a different machine:
...
Linux cloud113 5.15.2-1-default #1 SMP Sat Nov 13 14:10:12 UTC 2021 (26a203b)
x86_64 x86_64 x86_64 GNU/Linux^M
...

Same cpu though:
...
model name      : Intel(R) Xeon(R) CPU           E5506  @ 2.13GHz^M
...

I've also added an extra check, after the register set to verify the register
contents.  I've also enabled some debug prints, so we got:
...
(gdb) PASS: gdb.arch/i386-sse.exp: check float contents of %xmm1 after add
set var $xmm2.v4_float[0] = 2 + 10^M
-> multi-thread->log_command (...)^M
<- multi-thread->log_command (set var $xmm2.v4_float[0] = 2 + 10)^M
-> multi-thread->thread_address_space (...)^M
<- multi-thread->thread_address_space (23546) = 1^M
-> multi-thread->thread_address_space (...)^M
<- multi-thread->thread_address_space (23546) = 1^M
-> multi-thread->prepare_to_store (...)^M
<- multi-thread->prepare_to_store (0x55fb8deb8ae0)^M
-> multi-thread->store_registers (...)^M
<- multi-thread->store_registers (0x55fb8deb8ae0, 42)^M
target_store_registers (xmm2) = 00004041000000000000000000000000^M
-> multi-thread->thread_architecture (...)^M
<- multi-thread->thread_architecture (23546) = i386:x86-64^M
-> multi-thread->thread_address_space (...)^M
<- multi-thread->thread_address_space (23546) = 1^M
-> multi-thread->get_unwinder (...)^M
<- multi-thread->get_unwinder () = 0x0^M
-> multi-thread->get_tailcall_unwinder (...)^M
<- multi-thread->get_tailcall_unwinder () = 0x0^M
-> multi-thread->thread_address_space (...)^M
<- multi-thread->thread_address_space (23546) = 1^M
-> multi-thread->fetch_registers (...)^M
<- multi-thread->fetch_registers (0x55fb8deb8ae0, 16)^M
target_fetch_registers (rip) = 5316400000000000 0x401653 4200019^M
multi-thread:target_xfer_partial (3, (null), 0x55fb8e0cfc80, 0x0,
0x7fffffffd6e8, 8) = 1, 8, bytes =^M
 c0 d5 dc f7 ff 7f 00 00^M
(gdb) PASS: gdb.arch/i386-sse.exp: set %xmm2
print $xmm2.v4_float^M
-> multi-thread->log_command (...)^M
<- multi-thread->log_command (print $xmm2.v4_float)^M
-> multi-thread->thread_address_space (...)^M
<- multi-thread->thread_address_space (23546) = 1^M
-> multi-thread->fetch_registers (...)^M
<- multi-thread->fetch_registers (0x55fb8deb8ae0, 42)^M
target_fetch_registers (xmm2) = 00000000000000000000000000000000^M
-> multi-thread->supports_memory_tagging (...)^M
<- multi-thread->supports_memory_tagging () = false^M
$36 = {0, 0, 0, 0}^M
(gdb) FAIL: gdb.arch/i386-sse.exp: check float contents of %xmm2 after add
...

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