https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67912
Bug ID: 67912
Summary: [6 regression] ICE in gen_lowpart_common, at
emit-rtl.c:1399
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: ro at gcc dot gnu.org
CC: hubicka at gcc dot gnu.org
Target Milestone: ---
Host: i386-pc-solaris2.*
Target: i386-pc-solaris2.*
Build: i386-pc-solaris2.*
Solaris/x86 bootstrap is currently broken compiling the 64-bit s-regpat.adb:
$ /var/gcc/regression/trunk/10-gcc/build/./gcc/xgcc
-B/var/gcc/regression/trunk/10-gcc/build/./gcc/
-B/vol/gcc/i386-pc-solaris2.10/bin/ -B/vol/gcc/i386-pc-solaris2.10/lib/
-isystem /vol/gcc/i386-pc-solaris2.10/include -isystem
/vol/gcc/i386-pc-solaris2.10/sys-include -c -g -O2 -m64 -fpic -W -Wall
-gnatpg -nostdinc -m64 s-regpat.adb -o s-regpat.o
+===========================GNAT BUG DETECTED==============================+
| 6.0.0 20151009 (experimental) [trunk revision 228636] (i386-pc-solaris2.10)
GCC error:|
| in gen_lowpart_common, at emit-rtl.c:1399 |
| Error detected around s-regpat.adb:1029:22
This happens already with the stage1 compiler, though. A reghunt determined
that
this patch
2015-10-07 Jan Hubicka <hubi...@ucw.cz>
* expr.c (store_expr_with_bounds): Handle aggregate moves from
BLKmode.
* gimple-expr.c (useless_type_conversion_p): Do not use TYPE_CANONICAL
to define gimple type system; compare aggregates only by size.
is the culprit.
Rainer
