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From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/28814] [4.1/4.2 regression] in compare_values, at tree-vrp.c:415 Date: Wed, 23 Aug 2006 10:26:00 -0000 [thread overview] Message-ID: <20060823102604.4820.qmail@sourceware.org> (raw) In-Reply-To: <bug-28814-13133@http.gcc.gnu.org/bugzilla/> ------- Comment #5 from rguenth at gcc dot gnu dot org 2006-08-23 10:26 ------- We have mismatched types coming into #4 0x086244c4 in vrp_evaluate_conditional (cond=0xb7d2b168, use_equiv_p=1 '\001') at /space/rguenther/src/svn/sse-revert/gcc/tree-vrp.c:3717 3717 return compare_name_with_value (TREE_CODE (cond), op0, op1); (gdb) call debug_tree (cond) <eq_expr 0xb7d2b168 type <boolean_type 0xb7d364ac _Bool public unsigned QI size <integer_cst 0xb7d241f8 constant invariant 8> unit size <integer_cst 0xb7d24210 constant invariant 1> align 8 symtab 0 alias set -1 precision 1 min <integer_cst 0xb7d245e8 0> max <integer_cst 0xb7d24618 1>> arg 0 <ssa_name 0xb7dbb270 type <integer_type 0xb7d362e0 unsigned int sizes-gimplified public unsigned SI size <integer_cst 0xb7d243f0 constant invariant 32> unit size <integer_cst 0xb7d24180 constant invariant 4> align 32 symtab 0 alias set -1 precision 32 min <integer_cst 0xb7d24468 0> max <integer_cst 0xb7d24450 4294967295>> visited var <var_decl 0xb7d30108 r9887> def_stmt <nop_expr 0xb7db8240> version 1> arg 1 <integer_cst 0xb7d24d98 type <pointer_type 0xb7d368fc> constant invariant 1> t.i:11> #5 0x0821544f in fold_predicate_in (stmt=0xb7d330c8) at /space/rguenther/src/svn/sse-revert/gcc/tree-ssa-propagate.c:1045 1045 val = vrp_evaluate_conditional (*pred_p, true); (gdb) call debug_generic_expr (stmt) if (r9887D.1606_1 == 1B) goto <L0>; else goto <L1>; which fold produces here: /* If this is an EQ or NE comparison of a constant with a PLUS_EXPR or a MINUS_EXPR of a constant, we can convert it into a comparison with a revised constant as long as no overflow occurs. */ if (TREE_CODE (arg1) == INTEGER_CST && (TREE_CODE (arg0) == PLUS_EXPR || TREE_CODE (arg0) == MINUS_EXPR) && TREE_CODE (TREE_OPERAND (arg0, 1)) == INTEGER_CST && 0 != (tem = const_binop (TREE_CODE (arg0) == PLUS_EXPR ? MINUS_EXPR : PLUS_EXPR, arg1, TREE_OPERAND (arg0, 1), 0)) && ! TREE_CONSTANT_OVERFLOW (tem)) return fold_build2 (code, type, TREE_OPERAND (arg0, 0), tem); tem is of pointer type, but arg0 is of type unsigned int. I have a fix. -- rguenth at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|unassigned at gcc dot gnu |rguenth at gcc dot gnu dot |dot org |org Status|NEW |ASSIGNED Last reconfirmed|2006-08-23 07:05:53 |2006-08-23 10:26:04 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28814
next prev parent reply other threads:[~2006-08-23 10:26 UTC|newest] Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top 2006-08-22 21:53 [Bug c/28814] New: ICE when compiling Stalin under 4.1 but not 4.0 gcc-bugzilla at gcc dot gnu dot org 2006-08-23 7:06 ` [Bug tree-optimization/28814] [4.1/4.2 regression] in compare_values, at tree-vrp.c:415 tbm at gcc dot gnu dot org 2006-08-23 8:12 ` pinskia at gcc dot gnu dot org 2006-08-23 9:38 ` tbm at gcc dot gnu dot org 2006-08-23 10:26 ` rguenth at gcc dot gnu dot org [this message] 2006-08-23 14:16 ` [Bug middle-end/28814] " patchapp at dberlin dot org 2006-08-25 22:01 ` rguenth at gcc dot gnu dot org 2006-08-25 22:02 ` [Bug middle-end/28814] [4.1 " rguenth at gcc dot gnu dot org 2006-09-01 21:49 ` rguenth at gcc dot gnu dot org 2006-09-01 21:49 ` rguenth at gcc dot gnu dot org
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