diff mbox series

[v2,09/11] RISC-V: memset() size optimized version: Use compressed registers

Message ID 20250410112308.77247-10-marlene.fally@gmail.com
State New
Headers
Series newlib: RISC-V: Optimize memory and string functions for code size |

Commit Message

m fally April 10, 2025, 11:23 a.m. UTC 
  From: Eric Salem <ericsalem@gmail.com>

Swap register t1 with a3, so that the affected instructions can be compressed.

Reviewed-by: Christian Herber <christian.herber@oss.nxp.com>
Reviewed-by: m fally <marlene.fally@gmail.com>
Signed-off-by: Eric Salem <ericsalem@gmail.com>
---
 newlib/libc/machine/riscv/memset.S | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/newlib/libc/machine/riscv/memset.S b/newlib/libc/machine/riscv/memset.S
index a717ae7fb..fac0f73a2 100644
--- a/newlib/libc/machine/riscv/memset.S
+++ b/newlib/libc/machine/riscv/memset.S
@@ -14,13 +14,13 @@ 
 .type	memset, @function
 memset:
 #if defined(PREFER_SIZE_OVER_SPEED) || defined(__OPTIMIZE_SIZE__)
-  mv t1, a0
+  mv a3, a0
   beqz a2, 2f
 
 1:
-  sb a1, 0(t1)
+  sb a1, 0(a3)
   add   a2, a2, -1
-  add   t1, t1, 1
+  add   a3, a3, 1
   bnez a2, 1b
 
 2: