[Bug target/84828] ICE in verify_flow_info at gcc/cfghooks.c:265

["marxin at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84828

--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
I have a very similar issue:

$ g++ /home/marxin/Programming/gcc/gcc/testsuite/g++.dg/ext/pr84828.C /dev/null
-mno-sse -Og
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/ext/pr84828.C: In function
‘void foo(float, double)’:
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/ext/pr84828.C:10:35: error:
output constraint 0 must specify a single register
       asm volatile ("" : "+f" (c)); // { dg-error "must specify a single
register" }
                                   ^
during RTL pass: stack
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/ext/pr84828.C:13:1: internal
compiler error: in move_for_stack_reg, at reg-stack.c:1108
 }
 ^
0xd5f7ca move_for_stack_reg
        ../../gcc/reg-stack.c:1108
0xd60ead subst_stack_regs
        ../../gcc/reg-stack.c:2438
0xd610a0 convert_regs_1
        ../../gcc/reg-stack.c:3072
0xd610a0 convert_regs_2
        ../../gcc/reg-stack.c:3207
0xd627f8 convert_regs
        ../../gcc/reg-stack.c:3242
0xd627f8 reg_to_stack
        ../../gcc/reg-stack.c:3367
0xd627f8 rest_of_handle_stack_regs
        ../../gcc/reg-stack.c:3422
0xd627f8 execute
        ../../gcc/reg-stack.c:3453

Should I open another PR?