[PATCH] RISC-V: Fix warning in riscv.md

[juzhe . zhong]

From: Juzhe-Zhong <juzhe.zh...@rivai.ai>

Notice there is warning:
../../../riscv-gcc/gcc/config/riscv/riscv.md:1356:32: warning: comparison 
between signed and unsigned integer expressions [-Wsign-compare]
       if (INTVAL (operands[2]) == GET_MODE_MASK (HImode))
../../../riscv-gcc/gcc/config/riscv/riscv.md:1358:37: warning: comparison 
between signed and unsigned integer expressions [-Wsign-compare]
       else if (INTVAL (operands[2]) == GET_MODE_MASK (SImode))
../../../riscv-gcc/gcc/config/riscv/riscv.md: In function ???rtx_def* 
gen_anddi3(rtx, rtx, rtx)???:
../../../riscv-gcc/gcc/config/riscv/riscv.md:1356:32: warning: comparison 
between signed and unsigned integer expressions [-Wsign-compare]
       if (INTVAL (operands[2]) == GET_MODE_MASK (HImode))
../../../riscv-gcc/gcc/config/riscv/riscv.md:1358:37: warning: comparison 
between signed and unsigned integer expressions [-Wsign-compare]
       else if (INTVAL (operands[2]) == GET_MODE_MASK (SImode))

Add unsigned conversion to fix this warning.

gcc/ChangeLog:

        * config/riscv/riscv.md: Fix signed and unsigned comparison warning.

---
 gcc/config/riscv/riscv.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/config/riscv/riscv.md b/gcc/config/riscv/riscv.md
index aba203318a7..3d71f59c3a9 100644
--- a/gcc/config/riscv/riscv.md
+++ b/gcc/config/riscv/riscv.md
@@ -1353,9 +1353,9 @@
   if (CONST_INT_P (operands[2]))
     {
       enum machine_mode tmode = VOIDmode;
-      if (INTVAL (operands[2]) == GET_MODE_MASK (HImode))
+      if ((unsigned HOST_WIDE_INT) INTVAL (operands[2]) == GET_MODE_MASK 
(HImode))
        tmode = HImode;
-      else if (INTVAL (operands[2]) == GET_MODE_MASK (SImode))
+      else if ((unsigned HOST_WIDE_INT) INTVAL (operands[2]) == GET_MODE_MASK 
(SImode))
        tmode = SImode;
 
       if (tmode != VOIDmode)
-- 
2.36.3