------- Comment #3 from rguenth at gcc dot gnu dot org 2006-04-17 10:51 -------
Hmm, looks more like a tree sharing problem
Breakpoint 5, fold_ternary (code=CALL_EXPR, type=0xb7d5fa6c, op0=0xb7d55540,
op1=0xb7dd9048, op2=0x0)
at /space/rguenther/src/svn/gcc-4_1-branch/gcc/fold-const.c:9945
9945 tree arg0 = NULL_TREE, arg1 = NULL_TREE;
(gdb) call debug_tree(op1)
<tree_list 0xb7dd9048
value <call_expr 0xb7dd1028
type <real_type 0xb7d5fa6c double sizes-gimplified DF
size <integer_cst 0xb7d50540 constant invariant 64>
unit size <integer_cst 0xb7d50558 constant invariant 8>
align 64 symtab 0 alias set -1 precision 64
pointer_to_this <pointer_type 0xb7d5fb80>>
nothrow
arg 0 <addr_expr 0xb7d55240 type <pointer_type 0xb7dcf3f4>
readonly constant invariant arg 0 <function_decl 0xb7d80d80
__builtin_pow>>
arg 1 <tree_list 0xb7dd67e0 value <call_expr 0xb7dd1028>
chain <tree_list 0xb7dd67c8
value <real_cst 0xb7dd6798 type <real_type 0xb7d5fa6c double>
constant invariant 2.0e+0>>>
t.c:5>
chain <tree_list 0xb7dd9030
value <real_cst 0xb7dd9000 type <real_type 0xb7d5fa6c double>
constant invariant 3.2e+1>>>
we are self-referencing and so built up an infinite chain of pow (pow (..., 2)
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|missed-optimization |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27136
