b453407cdf
below is the patch list: - math: Improve layout of exp/exp10 data - AArch64: Use prefer_sve_ifuncs for SVE memset - AArch64: Add SVE memset - math: Improve layout of expf data - AArch64: Remove zva_128 from memset - AArch64: Optimize memset - AArch64: Improve generic strlen - assert: Add test for CVE-2025-0395 (cherry picked from commit a6a6276229d415c277b108ed8e6ef4f2fe517bae)
35 lines
1.2 KiB
Diff
35 lines
1.2 KiB
Diff
From 3de5112326a4274c97f154f3d335c11965ee960c Mon Sep 17 00:00:00 2001
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From: Wilco Dijkstra <wilco.dijkstra@arm.com>
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Date: Wed, 24 Jul 2024 15:17:47 +0100
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Subject: [PATCH] math: Improve layout of expf data
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GCC aligns global data to 16 bytes if their size is >= 16 bytes. This patch
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changes the exp2f_data struct slightly so that the fields are better aligned.
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As a result on targets that support them, load-pair instructions accessing
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poly_scaled and invln2_scaled are now 16-byte aligned.
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Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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(cherry picked from commit 44fa9c1080fe6a9539f0d2345b9d2ae37b8ee57a)
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---
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sysdeps/ieee754/flt-32/math_config.h | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/sysdeps/ieee754/flt-32/math_config.h b/sysdeps/ieee754/flt-32/math_config.h
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index d1b06a1a90..5904eb9bac 100644
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--- a/sysdeps/ieee754/flt-32/math_config.h
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+++ b/sysdeps/ieee754/flt-32/math_config.h
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@@ -166,9 +166,9 @@ extern const struct exp2f_data
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uint64_t tab[1 << EXP2F_TABLE_BITS];
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double shift_scaled;
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double poly[EXP2F_POLY_ORDER];
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- double shift;
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double invln2_scaled;
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double poly_scaled[EXP2F_POLY_ORDER];
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+ double shift;
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} __exp2f_data attribute_hidden;
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#define LOGF_TABLE_BITS 4
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--
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2.27.0
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