| Summary: | [11 Regression] ICE in extract_constrain_insn, at recog.c:2670 since r11-7526-g9105757a59b89019 | ||
|---|---|---|---|
| Product: | gcc | Reporter: | Martin Liška <marxin> |
| Component: | target | Assignee: | Not yet assigned to anyone <unassigned> |
| Status: | RESOLVED DUPLICATE | ||
| Severity: | normal | CC: | vmakarov, vmakarov |
| Priority: | P1 | Keywords: | ice-on-valid-code |
| Version: | 11.0 | ||
| Target Milestone: | 11.0 | ||
| See Also: | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99467 | ||
| Host: | x86_64-linux-gnu | Target: | |
| Build: | Known to work: | ||
| Known to fail: | Last reconfirmed: | 2021-03-08 00:00:00 | |
| Bug Depends on: | |||
| Bug Blocks: | 99467 | ||
Looks like a dup. (In reply to Richard Biener from comment #1) > Looks like a dup. I haven't found a PR that would start with the revision.. |
The following fails, it's reduced from qemu package: $ cat qemu.i struct saveBDAstate { short vbe_mode; }; void __set_seg_ES(); struct saveBDAstate bda_save_restore(struct saveBDAstate *data) { struct saveBDAstate *info = data; __set_seg_ES(); __asm__("" : "=m"(info->vbe_mode)); __asm__("" : : ""(info)); } $ gcc qemu.i -Os -m16 -S qemu.i: In function ‘bda_save_restore’: qemu.i:12:1: error: unrecognizable insn: 12 | } | ^ (insn 8 7 9 2 (parallel [ (set (mem:HI (mem/f/c:SI (plus:SI (reg/f:SI 6 bp) (const_int 12 [0xc])) [3 data+0 S4 A32]) [2 data_1(D)->vbe_mode+0 S2 A16]) (asm_operands:HI ("") ("=m") 0 [] [] [] qemu.i:10)) (clobber (reg:CC 17 flags)) ]) "qemu.i":10:3 -1 (nil)) during RTL pass: reload qemu.i:12:1: internal compiler error: in extract_constrain_insn, at recog.c:2670 0x6ff1e1 _fatal_insn(char const*, rtx_def const*, char const*, int, char const*) /home/marxin/Programming/gcc/gcc/rtl-error.c:108 0x6ff203 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*) /home/marxin/Programming/gcc/gcc/rtl-error.c:116 0x6fd485 extract_constrain_insn(rtx_insn*) /home/marxin/Programming/gcc/gcc/recog.c:2670 0xcca32f check_rtl /home/marxin/Programming/gcc/gcc/lra.c:2087 0xcceb1e lra(_IO_FILE*) /home/marxin/Programming/gcc/gcc/lra.c:2505 0xc85934 do_reload /home/marxin/Programming/gcc/gcc/ira.c:5827 0xc85934 execute /home/marxin/Programming/gcc/gcc/ira.c:6013 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions.