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From: Jiu Fu Guo <guojiufu@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc(refs/users/guojiufu/heads/personal-branch)] only +-1 Date: Mon, 14 Jun 2021 03:28:18 +0000 (GMT) [thread overview] Message-ID: <20210614032818.B87673835811@sourceware.org> (raw) https://gcc.gnu.org/g:0c0e2a8eb33119e7f92dc18a7070b039467f72f1 commit 0c0e2a8eb33119e7f92dc18a7070b039467f72f1 Author: Jiufu Guo <guojiufu@linux.ibm.com> Date: Mon Jun 14 11:27:46 2021 +0800 only +-1 Diff: --- gcc/testsuite/gcc.dg/loop-split1.c | 2 +- gcc/tree-ssa-loop-split.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/gcc/testsuite/gcc.dg/loop-split1.c b/gcc/testsuite/gcc.dg/loop-split1.c index 0276b58d90a..be8ea071371 100644 --- a/gcc/testsuite/gcc.dg/loop-split1.c +++ b/gcc/testsuite/gcc.dg/loop-split1.c @@ -155,4 +155,4 @@ find_skip_diff (char *p, char *q, unsigned n, unsigned i) return i; } -/* { dg-final { scan-tree-dump-times "Loop split" 11 "lsplit" } } */ +/* { dg-final { scan-tree-dump-times "Loop split" 13 "lsplit" } } */ diff --git a/gcc/tree-ssa-loop-split.c b/gcc/tree-ssa-loop-split.c index 9b4770736c9..b247afd51a1 100644 --- a/gcc/tree-ssa-loop-split.c +++ b/gcc/tree-ssa-loop-split.c @@ -1728,7 +1728,7 @@ analyze_idx_elements (class loop *loop, edge e, idx_elements &data) if (rhs_code != PLUS_EXPR) return false; tree step = gimple_assign_rhs2 (stmt); - if (TREE_CODE (step) != INTEGER_CST) + if (!integer_minus_onep (step) && !integer_onep (step)) return false; inc_stmt = stmt; tree prev = gimple_assign_rhs1 (stmt);
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