https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91498
Arseny Solokha <asolokha at gmx dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |asolokha at gmx dot com --- Comment #9 from Arseny Solokha <asolokha at gmx dot com> --- (In reply to H.J. Lu from comment #7) > Our SPEC CPU 2017 failed with > > 39 util.c:205:1: error: invalid rtl sharing found in the insn > 40 205 | } > 41 | ^ > 42 (insn 29 28 3 2 (set (subreg:V2DI (reg:DI 91) 0) > 43 (vec_concat:V2DI (mem/c:DI (plus:DI (reg/f:DI 19 frame) > 44 (const_int -8 [0xfffffffffffffff8])) [0 S8 A64]) > 45 (const_int 0 [0]))) "util.c":134:1 -1 > 46 (nil)) > 47 util.c:205:1: error: shared rtx > 48 (mem/c:DI (plus:DI (reg/f:DI 19 frame) > 49 (const_int -8 [0xfffffffffffffff8])) [0 S8 A64]) > 50 during RTL pass: stv > > We have an invalid shared rtx. And the testcase is as simple as: int ff (int jn) { return jn > 0 ? jn : 0; } % x86_64-unknown-linux-gnu-gcc-10.0.0-alpha20190818 -march=nano-3000 -Os -c f9272pqv.c f9272pqv.c: In function 'ff': f9272pqv.c:5:1: error: invalid rtl sharing found in the insn 5 | } | ^ (insn 18 17 3 2 (set (subreg:V4SI (reg:SI 87) 0) (vec_merge:V4SI (vec_duplicate:V4SI (mem/c:SI (plus:DI (reg/f:DI 19 frame) (const_int -4 [0xfffffffffffffffc])) [0 S4 A32])) (const_vector:V4SI [ (const_int 0 [0]) repeated x4 ]) (const_int 1 [0x1]))) "f9272pqv.c":3:1 -1 (nil)) f9272pqv.c:5:1: error: shared rtx (mem/c:SI (plus:DI (reg/f:DI 19 frame) (const_int -4 [0xfffffffffffffffc])) [0 S4 A32]) during RTL pass: stv f9272pqv.c:5:1: internal compiler error: internal consistency failure 0x9f3eca verify_rtx_sharing /var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190818/work/gcc-10-20190818/gcc/emit-rtl.c:2927 0x9f3dba verify_rtx_sharing /var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190818/work/gcc-10-20190818/gcc/emit-rtl.c:2942 0x9f3dba verify_rtx_sharing /var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190818/work/gcc-10-20190818/gcc/emit-rtl.c:2942 0x9f3dba verify_rtx_sharing /var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190818/work/gcc-10-20190818/gcc/emit-rtl.c:2942 0x9f4178 verify_insn_sharing /var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190818/work/gcc-10-20190818/gcc/emit-rtl.c:3013 0x9f79ed verify_rtl_sharing() /var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190818/work/gcc-10-20190818/gcc/emit-rtl.c:3036 0xc7a8f3 execute_function_todo /var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190818/work/gcc-10-20190818/gcc/passes.c:2004 0xc7b536 execute_todo /var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190818/work/gcc-10-20190818/gcc/passes.c:2037