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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/97939] ICE on sparc64 with UBsan for "i + 4096" on long: unrecognizable insn during RTL pass: vregs
Date: Sat, 28 Nov 2020 12:02:50 +0000 [thread overview]
Message-ID: <bug-97939-4-zxpy5fUFlw@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-97939-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97939
--- Comment #9 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Eric Botcazou <ebotcazou@gcc.gnu.org>:
https://gcc.gnu.org/g:c04bd12b06a21ad4a9c432c109ec2a543725ad1b
commit r11-5511-gc04bd12b06a21ad4a9c432c109ec2a543725ad1b
Author: Eric Botcazou <ebotcazou@adacore.com>
Date: Sat Nov 28 12:54:48 2020 +0100
Fix PR target/97939
The little dance around 4096 that add/sub instructions do on the SPARC
needs to be taken into account for the overflow arithmetic operations.
It cannot be done for unsigned overflow, but it can be done for signed
overflow.
gcc/ChangeLog:
PR target/97939
* config/sparc/predicates.md (arith_double_add_operand): Comment.
* config/sparc/sparc.md (uaddvdi4): Use arith_double_operand.
(addvdi4): Use arith_double_add_operand.
(addsi3): Remove useless attributes.
(addvsi4): Use arith_add_operand.
(*cmp_ccv_plus): Likewise and add second alternative accordingly.
(*cmp_ccxv_plus): Likewise.
(*cmp_ccv_plus_set): Likewise.
(*cmp_ccxv_plus_set): Likewise.
(*cmp_ccv_plus_sltu_set): Likewise.
(usubvdi4): Use arith_double_operand.
(subvdi4): Use arith_double_add_operand.
(subsi3): Remove useless attributes.
(subvsi4): Use arith_add_operand.
(*cmp_ccv_minus): Likewise and add second alternative accordingly.
(*cmp_ccxv_minus): Likewise.
(*cmp_ccv_minus_set): Likewise.
(*cmp_ccxv_minus_set): Likewise.
(*cmp_ccv_minus_sltu_set): Likewise.
(negsi2): Use register_operand.
(unegvsi3): Likewise.
(negvsi3) Likewise.
(*cmp_ccnz_neg): Likewise.
(*cmp_ccxnz_neg): Likewise.
(*cmp_ccnz_neg_set): Likewise.
(*cmp_ccxnz_neg_set): Likewise.
(*cmp_ccc_neg_set): Likewise.
(*cmp_ccxc_neg_set): Likewise.
(*cmp_ccc_neg_sltu_set): Likewise.
(*cmp_ccv_neg): Likewise.
(*cmp_ccxv_neg): Likewise.
(*cmp_ccv_neg_set): Likewise.
(*cmp_ccxv_neg_set): Likewise.
(*cmp_ccv_neg_sltu_set): Likewise.
gcc/testsuite/ChangeLog:
* gcc.target/sparc/overflow-6.c: New test.
next prev parent reply other threads:[~2020-11-28 12:02 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-23 0:48 [Bug target/97939] New: " vincent-gcc at vinc17 dot net
2020-11-23 0:49 ` [Bug target/97939] " vincent-gcc at vinc17 dot net
2020-11-23 8:04 ` ebotcazou at gcc dot gnu.org
2020-11-23 8:04 ` ebotcazou at gcc dot gnu.org
2020-11-26 8:25 ` dclarke at blastwave dot org
2020-11-27 7:55 ` dclarke at blastwave dot org
2020-11-27 9:08 ` ebotcazou at gcc dot gnu.org
2020-11-27 9:24 ` vincent-gcc at vinc17 dot net
2020-11-27 9:45 ` vincent-gcc at vinc17 dot net
2020-11-28 12:02 ` cvs-commit at gcc dot gnu.org [this message]
2020-11-28 12:03 ` cvs-commit at gcc dot gnu.org
2020-11-28 12:03 ` cvs-commit at gcc dot gnu.org
2020-11-28 12:04 ` ebotcazou at gcc dot gnu.org
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