The following is a regression observed with build == host == i686-pc-mingw32
and target == x86_64-pc-mingw32, built from mainline sources. It used to pass
with a build dated 2007-11-30.
$ cat Codelet.f90
program test
integer, parameter :: wp = 4
complex(wp), parameter :: i = (0._wp, 1._wp)
complex(wp) :: c(12)
integer :: m, N
N = 12
c = (/(exp(i*m),m=1,N)/)
print *, c(1)
end
$ x86_64-pc-mingw32-gfortran Codelet.f90 -O2 -c
Codelet.f90: In function 'test':
Codelet.f90:9: error: invalid rtl sharing found in the insn
(insn 155 154 156 2 Codelet.f90:8 (set (subreg:DI (reg:SC 108) 0)
(reg:DI 154)) -1 (nil))
Codelet.f90:9: error: shared rtx
(subreg:DI (reg:SC 108) 0)
Codelet.f90:9: internal compiler error: internal consistency failure
$ x86_64-pc-mingw32-gfortran -v
Using built-in specs.
Target: x86_64-pc-mingw32
Configured with: ../../trunk/configure --prefix=/home/FX/irun64
--build=i586-pc-mingw32 --target=x86_64-pc-mingw32 --with-gmp=/home/FX/local
--enable-languages=c,fortran --disable-werror --disable-nls --enable-threads
Thread model: win32
gcc version 4.4.0 20080421 (experimental) [trunk revision 134506] (GCC)
--
Summary: [4.4 regression] invalid rtl with -O2
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: fxcoudert at gcc dot gnu dot org
GCC build triplet: i686-pc-mingw32
GCC host triplet: i686-pc-mingw32
GCC target triplet: x86_64-pc-mingw32
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36006
