[PATCH] RISC-V: Fix wrong partial subreg check for bsetidisi

[Lin Sinan via Gcc-patches]

From: Lin Sinan <sinan....@linux.alibaba.com>

The partial subreg check should be for subreg operand(operand 1) instead of
the immediate operand(operand 2). This change also fix pr68648.c in zbs.

gcc/ChangeLog:

        * config/riscv/bitmanip.md: Fix wrong index in the check.

---
 gcc/config/riscv/bitmanip.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/config/riscv/bitmanip.md b/gcc/config/riscv/bitmanip.md
index 14d18edbe62..58a86bd929f 100644
--- a/gcc/config/riscv/bitmanip.md
+++ b/gcc/config/riscv/bitmanip.md
@@ -442,7 +442,7 @@
        (ior:DI (sign_extend:DI (match_operand:SI 1 "register_operand" "r"))
                (match_operand 2 "single_bit_mask_operand" "i")))]
   "TARGET_ZBS && TARGET_64BIT
-   && !partial_subreg_p (operands[2])"
+   && !partial_subreg_p (operands[1])"
   "bseti\t%0,%1,%S2"
   [(set_attr "type" "bitmanip")])
 
-- 
2.34.1