------- Comment #1 from rguenth at gcc dot gnu dot org 2006-11-06 14:58 -------
#1 0x00000000008aad40 in find_or_generate_expression (block=0x2b50ce8c4c80,
expr=0x2b50ce8d9210, stmts=0x2b50ce8d9ab0)
at /space//rguenther/src/svn/gcc-4_1-branch/gcc/tree-ssa-pre.c:1468
1468 gcc_assert (UNARY_CLASS_P (genop)
(gdb) bt
#2 0x00000000008aaf71 in create_expression_by_pieces (block=0x2b50ce8c4c80,
expr=0xd0cd10, stmts=0x2b50ce8d9ab0)
at /space//rguenther/src/svn/gcc-4_1-branch/gcc/tree-ssa-pre.c:1545
#3 0x00000000008ab873 in insert_into_preds_of_block (block=0x2b50ce8c4400,
node=0xd147d8, avail=0xd169d0, tmpname=0xa84d8f "prephitmp")
at /space//rguenther/src/svn/gcc-4_1-branch/gcc/tree-ssa-pre.c:1684
#4 0x00000000008abff3 in insert_aux (block=0x2b50ce8c4400)
at /space//rguenther/src/svn/gcc-4_1-branch/gcc/tree-ssa-pre.c:1883
#5 0x00000000008ac0d8 in insert_aux (block=0x2b50ce8c4c80)
at /space//rguenther/src/svn/gcc-4_1-branch/gcc/tree-ssa-pre.c:1915
#6 0x00000000008ac0d8 in insert_aux (block=0x2b50ce8c4100)
at /space//rguenther/src/svn/gcc-4_1-branch/gcc/tree-ssa-pre.c:1915
#7 0x00000000008ac0d8 in insert_aux (block=0x2b50ce8c4000)
at /space//rguenther/src/svn/gcc-4_1-branch/gcc/tree-ssa-pre.c:1915
#8 0x00000000008ac1a9 in insert ()
at /space//rguenther/src/svn/gcc-4_1-branch/gcc/tree-ssa-pre.c:1937
(gdb) call debug_tree (genop)
<ssa_name 0x2b50ce8cc930
type <integer_type 0x2b50ce708580 unsigned int sizes-gimplified public
unsigned SI
size <integer_cst 0x2b50ce6f9a50 constant invariant 32>
unit size <integer_cst 0x2b50ce6f9570 constant invariant 4>
align 32 symtab 0 alias set -1 precision 32 min <integer_cst
0x2b50ce6f9b40 0> max <integer_cst 0x2b50ce6f9b10 4294967295>
pointer_to_this <pointer_type 0x2b50ce8bf000>>
var <var_decl 0x2b50ce8bf4d0 D.1626> def_stmt <modify_expr 0x2b50ce8c3870>
version 39
value 0x2b50ce8d9210>
gcc_assert (UNARY_CLASS_P (genop)
|| BINARY_CLASS_P (genop)
|| COMPARISON_CLASS_P (genop)
|| REFERENCE_CLASS_P (genop)
|| TREE_CODE (genop) == CALL_EXPR);
(gdb) up
(gdb) call debug_generic_expr (expr)
VH.25 * VH.30
Created value VH.24 for extD.1610_5
Created value VH.25 for *VH.24
Created value VH.30 for D.1626_39
...
compute_antic required 3 iterations
Found partial redundancy for expression VH.25 * VH.30
Skipping insertion of phi for partial redundancy: Looks like an induction
variable
we obviously don't expect an SSA name here... but why are we value-numbering
loads in 4.1 here?
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dberlin at gcc dot gnu dot
| |org
Known to fail| |4.1.0 4.1.1 4.1.2
Known to work| |4.0.3 4.2.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29740
