GCC trunk gets an internal compiler error when building SPEC CPU2000 test
173.applu on powerpc64-linux with options "-O2 -fgraphite-identity
-ftree-vectorize" for either -m32 or -m64. Here's a minimized testcase:
subroutine foo (ldmx,ldmy,nx,ny,v)
implicit real*8 (a-h, o-z)
dimension v(5,ldmx,ldmy,*)
dimension tmat(5,5)
k = 2
do j = 2, ny-1
do i = 2, nx-1
do ip = 1, 4
do m = ip+1, 5
v(m,i,j,k) = v(m,i,j,k) * m
end do
end do
do m = 5, 1, -1
do l = m+1, 5
v(m,i,j,k) = v(l,i,j,k)
end do
v(m,i,j,k) = m
end do
end do
end do
return
end
elm3b149% /home/janis/tools/gcc-trunk-anonsvn/bin/gfortran -c -O2
-fgraphite-identity -ftree-vectorize bug.f
bug.f: In function foo:
bug.f:1:0: internal compiler error: tree check: expected ssa_name, have
var_decl in rename_map_elt_info, at sese.c:81
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
The benchmark and testcase compile cleanly with GCC 4.4.2. The failure
begins with this patch:
http://gcc.gnu.org/viewcvs?view=rev&rev=156711
r156711 | spop | 2010-02-11 19:42:38 +0000 (Thu, 11 Feb 2010)
--
Summary: ICE in rename_map_elt_info for Graphite, vect in
173.applu
Product: gcc
Version: 4.5.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: janis at gcc dot gnu dot org
GCC target triplet: powerpc64-linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43097
