--- a/gcc/machmode.def	Fri Oct 27 22:46:09 2017 +0900
+++ b/gcc/machmode.def	Thu Oct 25 07:37:49 2018 +0900
@@ -1,6 +1,6 @@
 /* This file contains the definitions and documentation for the
    machine modes used in the GNU compiler.
-   Copyright (C) 1987-2017 Free Software Foundation, Inc.
+   Copyright (C) 1987-2018 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -142,6 +142,17 @@
 	than two bytes (if CLASS is FLOAT).  CLASS must be INT or
 	FLOAT.  The names follow the same rule as VECTOR_MODE uses.
 
+     VECTOR_MODES_WITH_PREFIX (PREFIX, CLASS, WIDTH);
+	Like VECTOR_MODES, but start the mode names with PREFIX instead
+	of the usual "V".
+
+     VECTOR_BOOL_MODE (NAME, COUNT, BYTESIZE)
+        Create a vector mode called NAME that contains COUNT boolean
+        elements and occupies BYTESIZE bytes in total.  Each boolean
+        element occupies (COUNT * BITS_PER_UNIT) / BYTESIZE bits, with
+        the element at index 0 occupying the lsb of the first byte in
+        memory.  Only the lowest bit of each element is significant.
+
      COMPLEX_MODES (CLASS);
         For all modes presently declared in class CLASS, construct
 	corresponding complex modes.  Modes smaller than one byte
@@ -163,6 +174,12 @@
 	Unlike a FORMAT argument, if you are adjusting a float format
 	you must put an & in front of the name of each format structure.
 
+     ADJUST_NUNITS (MODE, EXPR);
+	Like the above, but set the number of nunits of MODE to EXPR.
+	This changes the size and precision of the mode in proportion
+	to the change in the number of units; for example, doubling
+	the number of units doubles the size and precision as well.
+
    Note: If a mode is ever made which is more than 255 bytes wide,
    machmode.h and genmodes.c will have to be changed to allocate
    more space for the mode_size and mode_alignment arrays.  */
@@ -243,6 +260,7 @@
 
 /* Complex modes.  */
 COMPLEX_MODES (INT);
+COMPLEX_MODES (PARTIAL_INT);
 COMPLEX_MODES (FLOAT);
 
 /* Decimal floating point modes.  */