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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/47566] ICE in vn_reference_lookup Date: Tue, 01 Feb 2011 15:36:00 -0000 [thread overview] Message-ID: <bug-47566-4-bqHg3yvqr4@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-47566-4@http.gcc.gnu.org/bugzilla/> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47566 Richard Guenther <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |ASSIGNED Last reconfirmed| |2011.02.01 15:36:11 AssignedTo|unassigned at gcc dot |rguenth at gcc dot gnu.org |gnu.org | Ever Confirmed|0 |1 --- Comment #9 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-02-01 15:36:11 UTC --- I can reproduce it. I also run into In file included from :425:0: /tmp/cp2k/makefiles/../src/realspace_grid_types.F: In function 'rs_pw_transfer_replicated': /tmp/cp2k/makefiles/../src/realspace_grid_types.F:816:0: error: non-trivial conversion at assignment struct array3_real(kind=8) struct array3_real(kind=8) # .MEM_755 = VDEF <.MEM_649> grid = D.39399_277->r; and a couple of similar ICEs in other ltrans units. Probably the known restrict vs. non-restrict bug. The bug happens when optimizing fft3d_pb, it also happens with -fno-inline so indeed the bug might be triggered by the mix of -O0 and -O3 (thus, by not running early optimizations). Seems to be -ffast-math vs. non-fast-math. We fold calls during PRE insertion which turns cabs into components (complex lowering). That folding, folded = build_call_array (currop->type, (TREE_CODE (fn) == FUNCTION_DECL ? build_fold_addr_expr (fn) : fn), nargs, args); can create arbitrary number of expressions, including for some reason non-gimple reg vars. In particular fold_builtin_cabs returns __builtin_sqrt (__builtin_pow (SAVE_EXPR <REALPART_EXPR <SAVE_EXPR <val.767_1280>>>, 2.0e+0) + __builtin_pow (SAVE_EXPR <IMAGPART_EXPR <SAVE_EXPR <val.767_1280>>>, 2.0e+0)) and then save-expr gimplification introduces the non-register temporary as a result of SSA_NAME save-expr (which is unnecessary anyway). The following fixes the ICE for me: Index: builtins.c =================================================================== --- builtins.c (revision 169476) +++ builtins.c (working copy) @@ -652,9 +652,10 @@ target_char_cast (tree cst, char *p) static tree builtin_save_expr (tree exp) { - if (TREE_ADDRESSABLE (exp) == 0 - && (TREE_CODE (exp) == PARM_DECL - || (TREE_CODE (exp) == VAR_DECL && !TREE_STATIC (exp)))) + if (TREE_CODE (exp) == SSA_NAME + || (TREE_ADDRESSABLE (exp) == 0 + && (TREE_CODE (exp) == PARM_DECL + || (TREE_CODE (exp) == VAR_DECL && !TREE_STATIC (exp))))) return exp; return save_expr (exp);
next prev parent reply other threads:[~2011-02-01 15:36 UTC|newest] Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top 2011-02-01 9:38 [Bug middle-end/47566] New: " Joost.VandeVondele at pci dot uzh.ch 2011-02-01 9:42 ` [Bug middle-end/47566] " Joost.VandeVondele at pci dot uzh.ch 2011-02-01 11:53 ` rguenth at gcc dot gnu.org 2011-02-01 12:04 ` Joost.VandeVondele at pci dot uzh.ch 2011-02-01 12:12 ` rguenth at gcc dot gnu.org 2011-02-01 12:23 ` Joost.VandeVondele at pci dot uzh.ch 2011-02-01 12:29 ` Joost.VandeVondele at pci dot uzh.ch 2011-02-01 14:47 ` rguenth at gcc dot gnu.org 2011-02-01 14:54 ` Joost.VandeVondele at pci dot uzh.ch 2011-02-01 15:36 ` rguenth at gcc dot gnu.org [this message] 2011-02-01 15:40 ` rguenth at gcc dot gnu.org 2011-02-01 15:52 ` Joost.VandeVondele at pci dot uzh.ch 2011-02-01 21:23 ` Joost.VandeVondele at pci dot uzh.ch 2011-02-02 9:59 ` rguenth at gcc dot gnu.org 2011-02-02 10:00 ` rguenth at gcc dot gnu.org
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