[PATCH PR95569] ICE in tmmark：verify_ssa failed

[qianchao]

Hi

Commit eb72dc663e9070b281be83a80f6f838a3a878822 introduces a ICE on AArch64. 
See the discussion on the bug for details.
Bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95569
        
Trivial patch fixing the ICE attached.

Bootstrap and tested on aarch64 platform. No new regression witnessed. ok for 
trunk?

2020-06-09  Qian Chao  <qianch...@huawei.com>

gcc/:

        PR tree-optimization/95569
        * trans-mem.c (expand_assign_tm): Ensure that rtmp is marked 
TREE_ADDRESSABLE.
        * testsuite/gcc.dg/tm/pr51472.c: New test.

PR95569-v0.patch
Description: PR95569-v0.patch