http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55066
Bug #: 55066
Summary: lto integer-cst change causes ICE
Classification: Unclassified
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: andi-...@firstfloor.org
A large LTO allyes kernel build (no small test case
unfortunately) recently started ICEing during the LTO phase with
linux-lto-2.6/drivers/isdn/hardware/eicon/message.c:12035:0: internal compiler
error: in widest_int_cst_value, at tree.c:10214
static byte mixer_request(dword Id, word Number, DIVA_CAPI_ADAPTER *a, PLCI
*plci, APPL *appl, API_PARSE *msg)
^
0x8c05f8 widest_int_cst_value(tree_node const*)
../../gcc/gcc/tree.c:10213
0x81987f find_bswap_1
../../gcc/gcc/tree-ssa-math-opts.c:1669
0x819a23 find_bswap_1
../../gcc/gcc/tree-ssa-math-opts.c:1733
0x81a194 find_bswap
../../gcc/gcc/tree-ssa-math-opts.c:1779
0x81a194 execute_optimize_bswap
../../gcc/gcc/tree-ssa-math-opts.c:1905
Please submit a full bug report,
I bisected it down to this change from Richi:
2012-10-18 Richard Guenther <rguent...@suse.de>
* lto-streamer.h (enum LTO_tags): Add LTO_integer_cst.
* lto-streamer-in.c (lto_input_tree): Use it.
* lto-streamer-out.c (lto_output_tree): Likewise, for
!TREE_OVERFLOW integer constants only.
* tree-streamer-in.c (unpack_ts_int_cst_value_fields): New function.
(unpack_value_fields): Call it.
(streamer_read_integer_cst): Simplify.
* tree-streamer-out.c (pack_ts_int_cst_value_fields): New function.
(streamer_pack_tree_bitfields): Call it.
(streamer_write_integer_cst): Adjust.
