https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116507
Zdenek Sojka <zsojka at seznam dot cz> changed: What |Removed |Added ---------------------------------------------------------------------------- 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*, ...)