tcg: Add tcg_constant_ptr

Similar to tcg_const_ptr, defer to tcg_constant_{i32,i64}.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

include/tcg/tcg.h

@@ -1056,9 +1056,11 @@ TCGv_vec tcg_constant_vec_matching(TCGv_vec match, unsigned vece, int64_t val);
 #if UINTPTR_MAX == UINT32_MAX
 # define tcg_const_ptr(x)        ((TCGv_ptr)tcg_const_i32((intptr_t)(x)))
 # define tcg_const_local_ptr(x)  ((TCGv_ptr)tcg_const_local_i32((intptr_t)(x)))
+# define tcg_constant_ptr(x)     ((TCGv_ptr)tcg_constant_i32((intptr_t)(x)))
 #else
 # define tcg_const_ptr(x)        ((TCGv_ptr)tcg_const_i64((intptr_t)(x)))
 # define tcg_const_local_ptr(x)  ((TCGv_ptr)tcg_const_local_i64((intptr_t)(x)))
+# define tcg_constant_ptr(x)     ((TCGv_ptr)tcg_constant_i64((intptr_t)(x)))
 #endif
 
 TCGLabel *gen_new_label(void);