38 lines
1.4 KiB
Diff
38 lines
1.4 KiB
Diff
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From 245c9ef2b8574fcaf277416d5986f46c0babbbec Mon Sep 17 00:00:00 2001
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From: Li Wei <liwei@loongson.cn>
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Date: Mon, 25 Dec 2023 11:20:23 +0800
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Subject: [PATCH] LoongArch: Fixed bug in *bstrins_<mode>_for_ior_mask
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template.
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We found that using the latest compiled gcc will cause a miscompare error
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when running spec2006 400.perlbench test with -flto turned on. After testing,
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it was found that only the LoongArch architecture will report errors.
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The first error commit was located through the git bisect command as
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r14-3773-g5b857e87201335. Through debugging, it was found that the problem
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was that the split condition of the *bstrins_<mode>_for_ior_mask template was
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empty, which should actually be consistent with the insn condition.
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gcc/ChangeLog:
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* config/loongarch/loongarch.md: Adjust.
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---
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gcc/config/loongarch/loongarch.md | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/gcc/config/loongarch/loongarch.md b/gcc/config/loongarch/loongarch.md
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index 7021105b241..2b0609f2f31 100644
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--- a/gcc/config/loongarch/loongarch.md
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+++ b/gcc/config/loongarch/loongarch.md
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@@ -1489,7 +1489,7 @@
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"loongarch_pre_reload_split () && \
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loongarch_use_bstrins_for_ior_with_mask (<MODE>mode, operands)"
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"#"
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- ""
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+ "&& true"
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[(set (match_dup 0) (match_dup 1))
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(set (zero_extract:GPR (match_dup 0) (match_dup 2) (match_dup 4))
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(match_dup 3))]
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--
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2.33.0
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