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From: "mkuvyrkov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/100537] New: Bootstrap-O3 and bootstrap-debug fail
 on 32-bit ARM after gcc-12-657-ga076632e274a
Date: Tue, 11 May 2021 16:39:56 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100537

            Bug ID: 100537
           Summary: Bootstrap-O3 and bootstrap-debug fail on 32-bit ARM
                    after gcc-12-657-ga076632e274a
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mkuvyrkov at gcc dot gnu.org
  Target Milestone: ---

Patch a076632e274abe344ca7648b7c7f299273d4cbe0 appears to have broken
bootstrap-O3 and bootstrap-debug at least on 32-bit armhf.

00:33:32 In function =E2=80=98syscall.forkExec=E2=80=99:
00:33:32 go1: error: address taken, but ADDRESSABLE bit not set
00:33:32 PHI argument
00:33:32 &go..C479;
00:33:32 for PHI node
00:33:32 err$__object_78 =3D PHI <err$__object_76(58), &go..C479(59)>
00:33:32 during GIMPLE pass: fre
00:33:32 go1: internal compiler error: verify_ssa failed
00:33:32 0x9c18d7 verify_ssa(bool, bool)
00:33:32=20=20=20=20=20=20=20
/home/tcwg-buildslave/workspace/tcwg_gnu_0/abe/snapshots/gcc.git~master/gcc=
/tree-ssa.c:1214
00:33:32 0x6f8d5b execute_function_todo
00:33:32=20=20=20=20=20=20=20
/home/tcwg-buildslave/workspace/tcwg_gnu_0/abe/snapshots/gcc.git~master/gcc=
/passes.c:2049
00:33:32 0x6f9abf do_per_function
00:33:32=20=20=20=20=20=20=20
/home/tcwg-buildslave/workspace/tcwg_gnu_0/abe/snapshots/gcc.git~master/gcc=
/passes.c:1687
00:33:32 0x6f9abf execute_todo
00:33:32=20=20=20=20=20=20=20
/home/tcwg-buildslave/workspace/tcwg_gnu_0/abe/snapshots/gcc.git~master/gcc=
/passes.c:2096
00:33:32 Please submit a full bug report,
00:33:32 with preprocessed source if appropriate.
00:33:32 Please include the complete backtrace with any bug report.
00:33:32 See <https://gcc.gnu.org/bugs/> for instructions.
00:33:32 Makefile:3001: recipe for target 'syscall.lo' failed=