Use explicit casts for ext32s opcodes.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/tci.c | 20 ++------------------
 1 file changed, 2 insertions(+), 18 deletions(-)

diff --git a/tcg/tci.c b/tcg/tci.c
index 72ec63e18e..9c8395397a 100644
--- a/tcg/tci.c
+++ b/tcg/tci.c
@@ -57,13 +57,6 @@ static tcg_target_ulong tci_read_reg(const tcg_target_ulong *regs, TCGReg index)
     return regs[index];
 }
 
-#if TCG_TARGET_REG_BITS == 64
-static int32_t tci_read_reg32s(const tcg_target_ulong *regs, TCGReg index)
-{
-    return (int32_t)tci_read_reg(regs, index);
-}
-#endif
-
 #if TCG_TARGET_REG_BITS == 64
 static uint64_t tci_read_reg64(const tcg_target_ulong *regs, TCGReg index)
 {
@@ -149,15 +142,6 @@ static uint64_t tci_read_r64(const tcg_target_ulong *regs,
     return tci_uint64(tci_read_r(regs, tb_ptr), low);
 }
 #elif TCG_TARGET_REG_BITS == 64
-/* Read indexed register (32 bit signed) from bytecode. */
-static int32_t tci_read_r32s(const tcg_target_ulong *regs,
-                             const uint8_t **tb_ptr)
-{
-    int32_t value = tci_read_reg32s(regs, **tb_ptr);
-    *tb_ptr += 1;
-    return value;
-}
-
 /* Read indexed register (64 bit) from bytecode. */
 static uint64_t tci_read_r64(const tcg_target_ulong *regs,
                              const uint8_t **tb_ptr)
@@ -887,8 +871,8 @@ uintptr_t QEMU_DISABLE_CFI tcg_qemu_tb_exec(CPUArchState *env,
 #endif
         case INDEX_op_ext_i32_i64:
             t0 = *tb_ptr++;
-            t1 = tci_read_r32s(regs, &tb_ptr);
-            tci_write_reg(regs, t0, t1);
+            t1 = tci_read_r(regs, &tb_ptr);
+            tci_write_reg(regs, t0, (int32_t)t1);
             break;
 #if TCG_TARGET_HAS_ext32u_i64
         case INDEX_op_ext32u_i64:
-- 
2.25.1