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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/105686] [10/11/12/13 Regression] ICE: verify_flow_info failed: missing REG_EH_REGION note at the end of bb 8 with -fnon-call-exceptions
Date: Mon, 23 May 2022 09:41:15 +0000 [thread overview]
Message-ID: <bug-105686-4-AAaX6tE6Bp@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-105686-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105686
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
CC| |ebotcazou at gcc dot gnu.org
Last reconfirmed| |2022-05-23
Priority|P3 |P2
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
@@ -67,31 +63,11 @@
179: NOTE_INSN_BASIC_BLOCK 3
9: NOTE_INSN_DELETED
183: x2:DI=[sp:DI+0x40]
- 184: x0:DI=[sp:DI+0x48]
- REG_UNUSED x0:DI
- 185: x0:DI=[sp:DI+0x50]
- REG_UNUSED x0:DI
- REG_EH_REGION 0x2
217: NOTE_INSN_BASIC_BLOCK 4
- 186: x0:DI=[sp:DI+0x58]
- REG_UNUSED x0:DI
- REG_EH_REGION 0x2
218: NOTE_INSN_BASIC_BLOCK 5
- 187: x0:DI=[sp:DI+0x60]
- REG_UNUSED x0:DI
- REG_EH_REGION 0x2
219: NOTE_INSN_BASIC_BLOCK 6
- 188: x0:DI=[sp:DI+0x68]
- REG_UNUSED x0:DI
- REG_EH_REGION 0x2
220: NOTE_INSN_BASIC_BLOCK 7
- 189: x0:DI=[sp:DI+0x70]
- REG_UNUSED x0:DI
- REG_EH_REGION 0x2
221: NOTE_INSN_BASIC_BLOCK 8
- 190: x0:DI=[sp:DI+0x78]
- REG_UNUSED x0:DI
- REG_EH_REGION 0x2
226: NOTE_INSN_BASIC_BLOCK 9
228: pc=L227
229: barrier
while there's nothing wrong with the transform, cprop-hardreg likely lacks
cleanup of EH side-effects / edges.
/* Detect obviously dead sets (via REG_UNUSED notes) and remove them. */
if (set
&& !RTX_FRAME_RELATED_P (insn)
&& NONJUMP_INSN_P (insn)
&& !may_trap_p (set)
&& find_reg_note (insn, REG_UNUSED, SET_DEST (set))
&& !side_effects_p (SET_SRC (set))
&& !side_effects_p (SET_DEST (set)))
{
bool last = insn == BB_END (bb);
delete_insn (insn);
if (last)
break;
continue;
using delete_insn_and_edges here fixes it but reg_cprop doesn't schedule
a CFG cleanup so that isn't enough.
leaving to RTL maintainers.
next prev parent reply other threads:[~2022-05-23 9:41 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-21 12:21 [Bug rtl-optimization/105686] New: " zsojka at seznam dot cz
2022-05-23 7:04 ` [Bug rtl-optimization/105686] " rguenth at gcc dot gnu.org
2022-05-23 9:41 ` rguenth at gcc dot gnu.org [this message]
2022-05-23 12:08 ` marxin at gcc dot gnu.org
2022-06-28 10:49 ` jakub at gcc dot gnu.org
2022-10-26 23:25 ` pinskia at gcc dot gnu.org
2023-05-14 22:40 ` [Bug rtl-optimization/105686] [10/11/12/13/14 " pinskia at gcc dot gnu.org
2023-05-14 22:44 ` pinskia at gcc dot gnu.org
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