I tried using -fmodulo-sched and managed to get an ICE. The test case is based
on some gzip code.
$ ~/toolchain/install/bin/gcc -v
Using built-in specs.
Target: powerpc-linux
Configured with: /home/anton/toolchain/gcc/gcc/configure --build=powerpc-linux
--host=powerpc-linux --target=powerpc-linux --enable-targets=powerpc64-linux
--enable-languages=c,c++,fortran --prefix=/home/anton/toolchain/install
Thread model: posix
gcc version 4.2.0 20060219 (experimental)
$ cat foo.c
unsigned int foo(unsigned int code, int len)
{
unsigned int res = 0;
do {
res |= code & 1;
} while (--len > 0);
return res;
}
$ ~/toolchain/install/bin/gcc -O3 -fmodulo-sched -c foo.c foo.c: In function
'foo':
foo.c:8: internal compiler error: in add_deps_for_def, at ddg.c:243
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
It only ICE's with -m32, -m64 compiles OK.
--
Summary: Swing modulo scheduling results in ICE
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: anton at samba dot org
GCC target triplet: powerpc64-linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26375
