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