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From: Martin Sebor <msebor@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc r12-784] PR middle-end/100574 - ICE in size_remaining, at builtins.c Date: Thu, 13 May 2021 22:33:55 +0000 (GMT) [thread overview] Message-ID: <20210513223355.EB7E6385800A@sourceware.org> (raw) https://gcc.gnu.org/g:5380e3c137b2bb63acd789cd09d01a4edc0a01c3 commit r12-784-g5380e3c137b2bb63acd789cd09d01a4edc0a01c3 Author: Martin Sebor <msebor@redhat.com> Date: Thu May 13 16:20:45 2021 -0600 PR middle-end/100574 - ICE in size_remaining, at builtins.c gcc/ChangeLog: PR middle-end/100574 * builtins.c (access_ref::get_ref): Improve detection of PHIs with all null arguments. Diff: --- gcc/builtins.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/gcc/builtins.c b/gcc/builtins.c index 2f0efae11e8..e1b284846b1 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -362,15 +362,6 @@ access_ref::get_ref (vec<access_ref> *all_refs, same_ref.offrng[1] = phi_arg_ref.offrng[1]; } - if (phi_ref.sizrng[0] < 0) - { - /* Fail if none of the PHI's arguments resulted in updating PHI_REF - (perhaps because they have all been already visited by prior - recursive calls). */ - psnlim->leave_phi (ref); - return NULL_TREE; - } - if (!same_ref.ref && same_ref.offrng[0] != 0) /* Clear BASE0 if not all the arguments refer to the same object and if not all their offsets are zero-based. This allows the final @@ -390,6 +381,15 @@ access_ref::get_ref (vec<access_ref> *all_refs, phi_ref.parmarray = parmarray; } + if (phi_ref.sizrng[0] < 0) + { + /* Fail if none of the PHI's arguments resulted in updating PHI_REF + (perhaps because they have all been already visited by prior + recursive calls). */ + psnlim->leave_phi (ref); + return NULL_TREE; + } + /* Avoid changing *THIS. */ if (pref && pref != this) *pref = phi_ref;
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