44 lines
1.5 KiB
Diff
44 lines
1.5 KiB
Diff
From 7f703cf758c4f185dd62f2a4f463002bb514af16 Mon Sep 17 00:00:00 2001
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From: Xi Ruoyao <xry111@xry111.site>
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Date: Sun, 27 Aug 2023 00:36:51 +0800
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Subject: [PATCH 13/29] LoongArch: Micro-optimize LD_PCREL
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We are requiring Binutils >= 2.41, so explicit relocation syntax is
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always supported by the assembler. Use it to reduce one instruction.
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Signed-off-by: Xi Ruoyao <xry111@xry111.site>
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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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sysdeps/unix/sysv/linux/loongarch/pointer_guard.h | 10 ++++------
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1 file changed, 4 insertions(+), 6 deletions(-)
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diff --git a/sysdeps/unix/sysv/linux/loongarch/pointer_guard.h b/sysdeps/unix/sysv/linux/loongarch/pointer_guard.h
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index b25e353b..d6c78687 100644
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--- a/sysdeps/unix/sysv/linux/loongarch/pointer_guard.h
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+++ b/sysdeps/unix/sysv/linux/loongarch/pointer_guard.h
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@@ -19,17 +19,15 @@
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#ifndef POINTER_GUARD_H
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#define POINTER_GUARD_H
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-/* Load a got-relative EXPR into G, using T.
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- Note G and T are register names. */
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+/* Load a got-relative EXPR into register G. */
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#define LD_GLOBAL(G, EXPR) \
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la.global G, EXPR; \
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REG_L G, G, 0;
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-/* Load a pc-relative EXPR into G, using T.
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- Note G and T are register names. */
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+/* Load a pc-relative EXPR into register G. */
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#define LD_PCREL(G, EXPR) \
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- la.pcrel G, EXPR; \
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- REG_L G, G, 0;
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+ pcalau12i G, %pc_hi20(EXPR); \
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+ REG_L G, G, %pc_lo12(EXPR);
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#if (IS_IN (rtld) \
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|| (!defined SHARED && (IS_IN (libc) \
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--
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2.33.0
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