[gcc(refs/vendors/riscv/heads/gcc-15-with-riscv-opts)] RISC-V: Since the loop increment i++ is unreachable, the loop body will never execute more than once

[Jeff Law via Gcc-cvs]

https://gcc.gnu.org/g:99d801c0191641da7b313517454cf8f6b9d39415

commit 99d801c0191641da7b313517454cf8f6b9d39415
Author: Jin Ma <ji...@linux.alibaba.com>
Date:   Fri May 16 15:27:13 2025 +0800

    RISC-V: Since the loop increment i++ is unreachable, the loop body will 
never execute more than once
    
    Reported-by: huangcunjian <huangcunjian.hu...@alibaba-inc.com>
    
    gcc/ChangeLog:
    
            * config/riscv/riscv.cc (riscv_gpr_save_operation_p): Remove
            break and fixbug for elt index.
    
    (cherry picked from commit 55cfd1c8fa2ad2c5d91eadd14daa35f695779a2b)

Diff:
---
 gcc/config/riscv/riscv.cc | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/gcc/config/riscv/riscv.cc b/gcc/config/riscv/riscv.cc
index fd51472dbeaa..b2794252291e 100644
--- a/gcc/config/riscv/riscv.cc
+++ b/gcc/config/riscv/riscv.cc
@@ -11580,11 +11580,10 @@ riscv_gpr_save_operation_p (rtx op)
          /* Two CLOBBER and USEs, must check the order.  */
          unsigned expect_code = i < 3 ? CLOBBER : USE;
          if (GET_CODE (elt) != expect_code
-             || !REG_P (XEXP (elt, 1))
-             || (REGNO (XEXP (elt, 1)) != gpr_save_reg_order[i]))
+             || !REG_P (XEXP (elt, 0))
+             || (REGNO (XEXP (elt, 0)) != gpr_save_reg_order[i]))
            return false;
        }
-       break;
     }
   return true;
 }