x86: Use HOST_WIDE_INT_(0|M1)U to initialize unsigned HOST_WIDE_INT

Use HOST_WIDE_INT_0U, instead of 0, HOST_WIDE_INT_M1U, instead of -1, to
initialize unsigned HOST_WIDE_INT.

	* config/i386/i386-expand.cc (ix86_expand_set_or_cpymem): Use
	HOST_WIDE_INT_0U and HOST_WIDE_INT_M1U to initialize unsigned
	HOST_WIDE_INT.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>

Author: hjl-tools

gcc/config/i386/i386-expand.cc

@@ -9515,9 +9515,9 @@ ix86_expand_set_or_cpymem (rtx dst, rtx src, rtx count_exp, rtx val_exp,
   machine_mode move_mode = VOIDmode;
   int unroll_factor = 1;
   /* TODO: Once value ranges are available, fill in proper data.  */
-  unsigned HOST_WIDE_INT min_size = 0;
-  unsigned HOST_WIDE_INT max_size = -1;
-  unsigned HOST_WIDE_INT probable_max_size = -1;
+  unsigned HOST_WIDE_INT min_size = HOST_WIDE_INT_0U;
+  unsigned HOST_WIDE_INT max_size = HOST_WIDE_INT_M1U;
+  unsigned HOST_WIDE_INT probable_max_size = HOST_WIDE_INT_M1U;
   bool misaligned_prologue_used = false;
   addr_space_t dst_as, src_as = ADDR_SPACE_GENERIC;