[Bug target/91269] [9/10 regression] unaligned floating-point register with -mcpu=niagara4 -fcall-used-g6

[slyfox at inbox dot ru]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91269

--- Comment #17 from Sergei Trofimovich <slyfox at inbox dot ru> ---
Created attachment 46906
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46906&action=edit
bug-lz4-8.3.0.c

Here is a bug-lz4-8.3.0.c that exposes suspiciously similar failure on sparc64
gcc-8.3.0 on lz4-1.8.3 package:

  $ LANG=C sparc64-unknown-linux-gnu-gcc-8.3.0 -O2 -pipe -mcpu=niagara4 -fPIC
-c bug-lz4-8.3.0.c -o bug-lz4-8.3.0.o

  {standard input}: Assembler messages:
  {standard input}:365: Error: Illegal operands