https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116507

Zdenek Sojka <zsojka at seznam dot cz> changed:

           What    |Removed                     |Added
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                 CC|                            |zsojka at seznam dot cz

--- Comment #2 from Zdenek Sojka <zsojka at seznam dot cz> ---
Created attachment 59597
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59597&action=edit
ugly testcase failing in {*movhi_aarch64}

I am not creating a separate PR for this, since the testcase is quite long, but
it might be useful for you.

$ aarch64-unknown-linux-gnu-gcc -O2 -ffast-math testcase.c -w
testcase.c: In function 'foo0':
testcase.c:36:1: error: insn does not satisfy its constraints:
   36 | }
      | ^
(insn 46 190 191 2 (set (reg:HI 4 x4 [172])
        (mem/v/j/c:HI (plus:DI (reg/f:DI 6 x6 [96])
                (const_int -257 [0xfffffffffffffeff])) [1 +0 S2 A8]))
"testcase.c":21:17 68 {*movhi_aarch64}
     (nil))
during RTL pass: reload
testcase.c:36:1: internal compiler error: in extract_constrain_insn, at
recog.cc:2783
0x270564e internal_error(char const*, ...)

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