38 lines
1.1 KiB
Diff
38 lines
1.1 KiB
Diff
From 93c4226585cc53fd86dfa3ca2d70d5b417d960b3 Mon Sep 17 00:00:00 2001
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From: xuli <xuli1@eswincomputing.com>
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Date: Tue, 22 Aug 2023 06:21:00 +0000
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Subject: [PATCH] RISCV: Fix PR111074 [GCC13 BUG]
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his patch fixes this issue happens on GCC-13.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111074
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This patch should be backported to GCC-13.
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GCC-14 has rewritten propagate_avl function, so there is no issue.
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PR target/111074
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gcc/ChangeLog:
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* config/riscv/riscv-vsetvl.cc (extract_single_source): Fix bug.
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---
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gcc/config/riscv/riscv-vsetvl.cc | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/gcc/config/riscv/riscv-vsetvl.cc b/gcc/config/riscv/riscv-vsetvl.cc
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index 789eb04b78d0..bd45cb97e63b 100644
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--- a/gcc/config/riscv/riscv-vsetvl.cc
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+++ b/gcc/config/riscv/riscv-vsetvl.cc
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@@ -1183,6 +1183,9 @@ extract_single_source (set_info *set)
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return nullptr;
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hash_set<set_info *> sets = get_all_sets (set, true, false, true);
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+ if (sets.is_empty ())
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+ return nullptr;
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+
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insn_info *first_insn = (*sets.begin ())->insn ();
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if (first_insn->is_artificial ())
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return nullptr;
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--
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2.39.3
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