https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95338
Bug ID: 95338
Summary: [9/10/11 Regression] ICE in eliminate_stmt, at
tree-ssa-sccvn.c:5974
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: gs...@t-online.de
Target Milestone: ---
Changed between 20181202 and 20181209, with option -O1 :
$ cat z1.f90
module m
contains
function f(x)
integer :: x
integer :: f
real :: g
f = x
return
entry g(x)
g = x
end
end
program p
use m
print *, f(1)
print *, g(1)
end
$ gfortran-11-20200524 -c z1.f90 -O2 -ff2c
$
$ gfortran-11-20200524 -c z1.f90 -O1 -ff2c
during GIMPLE pass: fre
z1.f90:6:0:
6 | real :: g
|
internal compiler error: in eliminate_stmt, at tree-ssa-sccvn.c:5974
0xd40f45 eliminate_dom_walker::eliminate_stmt(basic_block_def*,
gimple_stmt_iterator*)
../../gcc/tree-ssa-sccvn.c:5974
0xd45a90 process_bb
../../gcc/tree-ssa-sccvn.c:7173
0xd46fe1 do_rpo_vn
../../gcc/tree-ssa-sccvn.c:7657
0xd47f8a execute
../../gcc/tree-ssa-sccvn.c:7811
Configured with --enable-checking=yes :
$ gfortran-11-20200524 -c z1.f90 -O1 -ff2c
z1.f90:6:0:
6 | real :: g
|
Error: non-trivial conversion in 'component_ref'
real(kind=8)
real(kind=4)
D.3943 = __result.g;
z1.f90:6:0: internal compiler error: 'verify_gimple' failed
0xd9b27d verify_gimple_in_seq(gimple*)
../../gcc/tree-cfg.c:5113
0xa526b1 gimplify_body(tree_node*, bool)
../../gcc/gimplify.c:14919
0xa52967 gimplify_function_tree(tree_node*)
../../gcc/gimplify.c:14990
0x88d9e7 cgraph_node::analyze()
../../gcc/cgraphunit.c:671
0x890e21 analyze_functions
../../gcc/cgraphunit.c:1231
0x892042 symbol_table::finalize_compilation_unit()
../../gcc/cgraphunit.c:2975
