File _service:tar_scm:LoongArch-Micro-optimize-LD_PC... of Package glibc

File _service:tar_scm:LoongArch-Micro-optimize-LD_PCREL.patch of Package glibc (Revision 756e0ca71b8eecd09f8ca555e0cce4dd)

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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