tcg: incorrect assemble instructions generated for op_cmp_vec on loongarch64
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## Host environment
- Operating system: Debian<!-- Windows 10 21H1, Fedora 37, etc. -->
- OS/kernel version: Debian Sid<!-- For POSIX hosts, use `uname -a` -->
- Architecture: loongarch64<!-- x86, ARM, s390x, etc. -->
- QEMU flavor: qemu-ppc64le<!-- qemu-system-x86_64, qemu-aarch64, qemu-img, etc. -->
- QEMU version: 11.0.1<!-- e.g. `qemu-system-x86_64 --version` -->
- QEMU command line:
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command line arguments in /var/log/libvirt/qemu/$GUEST.log.
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```
qemu-ppc64el /usr/bin/busybox ash -c ": /usr/bin/*"
```
## Emulated/Virtualized environment
- Operating system: N/A <!-- Windows 10 21H1, Fedora 37, etc. -->
- OS/kernel version: N/A <!-- For POSIX guests, use `uname -a`. -->
- Architecture: ppc64le <!-- x86, ARM, s390x, etc. -->
## Description of problem
<!-- Describe the problem, including any error/crash messages seen. -->
qemu exits abnormally with:
```
qemu-ppc64el: QEMU internal SIGILL {code=128, addr=(nil)}
Illegal instruction qemu-ppc64el /usr/bin/busybox ash -c ": /usr/bin/*"
```
## Steps to reproduce
1. Install `qemu-user` and `busybox:ppc64el`
2. Run the above command
## Additional information
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The relevant tcg op codes and generated instructions logged with `-d op,out_asm` are:
```
---- 00007fffeecb9e2c 0000000000000000 0000000000000000
ld_vec v128,e8,tmp9,env,$0xa520
ld_vec v128,e8,tmp10,env,$0xa510
cmp_vec v128,e8,tmp12,tmp9,v128$0x0,eq
cmp_vec v128,e8,tmp13,tmp10,v128$0x0,eq
cmp_vec v128,e8,tmp11,tmp9,tmp10,ne
or_vec v128,e8,tmp11,tmp11,tmp12
-- guest addr 0x00007fffeecb9e2c
0x7fffe61675c4: 14000154 lu12i_w r20, 10
0x7fffe61675c8: 03948294 ori r20, r20, 1312
0x7fffe61675cc: 384052e0 vldx v0, r23, r20
0x7fffe61675d0: 14000154 lu12i_w r20, 10
0x7fffe61675d4: 03944294 ori r20, r20, 1296
0x7fffe61675d8: 384052e1 vldx v1, r23, r20
0x7fffe61675dc: 72800002 vseqi_b v2, v0, 0x0
0x7fffe61675e0: 72800023 vseqi_b v3, v1, 0x0
0x7fffe61675e4: 00000020 illegal
0x7fffe61675e8: 71268800 vor_v v0, v0, v2
0x7fffe61675ec: 71268c00 vor_v v0, v0, v3
0x7fffe61675f0: 14000154 lu12i_w r20, 10
```
It seems that the translation of `cmp_vec ... ne` is not correct. In https://gitlab.com/qemu-project/qemu/-/blob/v11.0.1/tcg/loongarch64/tcg-target.c.inc#L2349-2386 , it can been seen that the handling of `TCG_COND_NE` on non-const values is not correct.
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issue
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