This was missed in the big intN patch set I did last year; it only shows up if you have a target with an N-bit type that isn't also used for a pointer type but is used for unwinding (which is a change I also have pending, hence I noticed ;). Tested on x86-64 and msp430 (with the pending patch) with no regressions. Ok?
* lto-lang.c (lto_type_for_size): Include intN types. (lto_type_for_mode): Likewise. Index: gcc/lto/lto-lang.c =================================================================== --- gcc/lto/lto-lang.c (revision 224364) +++ gcc/lto/lto-lang.c (working copy) @@ -827,12 +827,14 @@ lto_post_options (const char **pfilename /* Return an integer type with PRECISION bits of precision, that is unsigned if UNSIGNEDP is nonzero, otherwise signed. */ static tree lto_type_for_size (unsigned precision, int unsignedp) { + int i; + if (precision == TYPE_PRECISION (integer_type_node)) return unsignedp ? unsigned_type_node : integer_type_node; if (precision == TYPE_PRECISION (signed_char_type_node)) return unsignedp ? unsigned_char_type_node : signed_char_type_node; @@ -844,12 +846,18 @@ lto_type_for_size (unsigned precision, i if (precision == TYPE_PRECISION (long_long_integer_type_node)) return unsignedp ? long_long_unsigned_type_node : long_long_integer_type_node; + for (i = 0; i < NUM_INT_N_ENTS; i ++) + if (int_n_enabled_p[i] + && precision == int_n_data[i].bitsize) + return (unsignedp ? int_n_trees[i].unsigned_type + : int_n_trees[i].signed_type); + if (precision <= TYPE_PRECISION (intQI_type_node)) return unsignedp ? unsigned_intQI_type_node : intQI_type_node; if (precision <= TYPE_PRECISION (intHI_type_node)) return unsignedp ? unsigned_intHI_type_node : intHI_type_node; @@ -873,12 +881,13 @@ lto_type_for_size (unsigned precision, i then UNSIGNEDP selects between saturating and nonsaturating types. */ static tree lto_type_for_mode (machine_mode mode, int unsigned_p) { tree t; + int i; if (mode == TYPE_MODE (integer_type_node)) return unsigned_p ? unsigned_type_node : integer_type_node; if (mode == TYPE_MODE (signed_char_type_node)) return unsigned_p ? unsigned_char_type_node : signed_char_type_node; @@ -889,12 +898,18 @@ lto_type_for_mode (machine_mode mode, in if (mode == TYPE_MODE (long_integer_type_node)) return unsigned_p ? long_unsigned_type_node : long_integer_type_node; if (mode == TYPE_MODE (long_long_integer_type_node)) return unsigned_p ? long_long_unsigned_type_node : long_long_integer_type_node; + for (i = 0; i < NUM_INT_N_ENTS; i ++) + if (int_n_enabled_p[i] + && mode == int_n_data[i].m) + return (unsigned_p ? int_n_trees[i].unsigned_type + : int_n_trees[i].signed_type); + if (mode == QImode) return unsigned_p ? unsigned_intQI_type_node : intQI_type_node; if (mode == HImode) return unsigned_p ? unsigned_intHI_type_node : intHI_type_node;