42 lines
1.6 KiB
Diff
42 lines
1.6 KiB
Diff
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From 59824f1062d77d0e02ea82d47415bf95c235de87 Mon Sep 17 00:00:00 2001
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From: chenxiaolong <chenxl04200420@163.com>
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Date: Thu, 15 Jun 2023 02:46:24 +0000
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Subject: [PATCH 046/124] LoongArch: Change the default value of
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LARCH_CALL_RATIO to 6.
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During the regression testing of the LoongArch architecture GCC, it was found
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that the tests in the pr90883.C file failed. The problem was modulated and
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found that the error was caused by setting the macro LARCH_CALL_RATIO to a too
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large value. Combined with the actual LoongArch architecture, the different
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thresholds for meeting the test conditions were tested using the engineering method
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(SPEC CPU 2006), and the results showed that its optimal threshold should be set
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to 6.
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gcc/ChangeLog:
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* config/loongarch/loongarch.h (LARCH_CALL_RATIO): Modify the value
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of macro LARCH_CALL_RATIO on LoongArch to make it perform optimally.
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Signed-off-by: Peng Fan <fanpeng@loongson.cn>
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Signed-off-by: ticat_fp <fanpeng@loongson.cn>
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---
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gcc/config/loongarch/loongarch.h | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/gcc/config/loongarch/loongarch.h b/gcc/config/loongarch/loongarch.h
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index 44ebadfaa..0e35d4dec 100644
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--- a/gcc/config/loongarch/loongarch.h
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+++ b/gcc/config/loongarch/loongarch.h
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@@ -1073,7 +1073,7 @@ typedef struct {
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/* The base cost of a memcpy call, for MOVE_RATIO and friends. These
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values were determined experimentally by benchmarking with CSiBE.
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*/
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-#define LARCH_CALL_RATIO 8
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+#define LARCH_CALL_RATIO 6
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/* Any loop-based implementation of cpymemsi will have at least
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LARCH_MAX_MOVE_OPS_PER_LOOP_ITER memory-to-memory
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--
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2.33.0
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