Hi, I am porting a private target in GCC 4.6.3 version. For my target pointer size is 24bits and word size is 32bits. Moreover a byte is 32bit
For the testcase gcc.c-torture/compile/921111-1.c i get the following ICE 921111-1.c: In function 'f': 921111-1.c:18:5: internal compiler error: in size_binop_loc, at fold-const.c:1436 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions This is the reduced testcase of the same struct vp { int wa; }; typedef struct vp *vpt; typedef struct vc { int o; vpt py[8]; } *vct; typedef struct np *npt; struct np { vct d; int di; }; int f(npt dp) { vpt *py; py = &dp->d->py[dp->di]; return (int)(py[1])->wa; } The ICE happens in tree_slp_vectorizer pass. The following is the tree dump just before that ;; Function f (f) f (struct np * dp) { struct vp * D.1232; int D.1230; unsigned int D.1228; int D.1227; struct vc * D.1225; <bb 2>: D.1225_2 = dp_1(D)->d; D.1227_4 = dp_1(D)->di; D.1228_5 = (unsigned int) D.1227_4; D.1232_9 = MEM[(struct vp * *)D.1225_2 + 4B].py[D.1228_5]{lb: 0 sz: 4}; D.1230_10 = D.1232_9->wa; return D.1230_10; } The ICE happens for D.1232_9 = MEM[(struct vp * *)D.1225_2 + 4B].py[D.1228_5]{lb: 0 sz: 4}; This is due to the addition of the new code in tree-data-ref.c (this is was not there in 4.5 series) if (TREE_CODE (base) == MEM_REF) { if (!integer_zerop (TREE_OPERAND (base, 1))) { if (!poffset) { double_int moff = mem_ref_offset (base); poffset = double_int_to_tree (sizetype, moff); } else poffset = size_binop (PLUS_EXPR, poffset, TREE_OPERAND (base, 1)); } base = TREE_OPERAND (base, 0); } else base = build_fold_addr_expr (base); the assert check in size_binop fails gcc_assert (int_binop_types_match_p (code, TREE_TYPE (arg0), TREE_TYPE (arg1))); This is because the mode of arg0 and arg1 are different, one is Pmode and other is word_mode. This is present in m32c target which also has different Pmode and word_mode. Is this a know failure? I cannot find a bug entry for this issue. Should i report this? Regards, Shafi
