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1; RUN: llc < %s2; Infinite loop in the dag combiner, reduced from 176.gcc. 3%struct._obstack_chunk = type { ptr, ptr, [4 x i8] }4 %struct.anon = type { i32 }5 %struct.lang_decl = type opaque6 %struct.lang_type = type { i32, [1 x ptr] }7 %struct.obstack = type { i32, ptr, ptr, ptr, ptr, i32, i32, ptr, ptr, ptr, i8 }8 %struct.rtx_def = type { i16, i8, i8, [1 x %struct.anon] }9 %struct.tree_common = type { ptr, ptr, i8, i8, i8, i8 }10 %struct.tree_decl = type { [12 x i8], ptr, i32, ptr, i32, i8, i8, i8, i8, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, %struct.anon, { ptr }, ptr, ptr }11 %struct.tree_list = type { [12 x i8], ptr, ptr }12 %struct.tree_node = type { %struct.tree_decl }13 %struct.tree_type = type { [12 x i8], ptr, ptr, ptr, i32, i8, i8, i8, i8, i32, ptr, ptr, %struct.anon, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }14@void_type_node = external global ptr ; <ptr> [#uses=1]15@char_type_node = external global ptr ; <ptr> [#uses=1]16@short_integer_type_node = external global ptr ; <ptr> [#uses=1]17@short_unsigned_type_node = external global ptr ; <ptr> [#uses=1]18@float_type_node = external global ptr ; <ptr> [#uses=1]19@signed_char_type_node = external global ptr ; <ptr> [#uses=1]20@unsigned_char_type_node = external global ptr ; <ptr> [#uses=1]21 22define fastcc i32 @self_promoting_args_p(ptr %parms) {23entry:24 %tmp915 = icmp eq ptr %parms, null ; <i1> [#uses=1]25 br i1 %tmp915, label %return, label %cond_true92.preheader26 27cond_true: ; preds = %cond_true9228 %tmp9.not = icmp ne ptr %tmp2, %tmp7 ; <i1> [#uses=1]29 %tmp14 = icmp eq ptr %tmp2, null ; <i1> [#uses=1]30 %bothcond = or i1 %tmp9.not, %tmp14 ; <i1> [#uses=1]31 br i1 %bothcond, label %return, label %cond_next1832 33cond_next12: ; preds = %cond_true9234 %tmp14.old = icmp eq ptr %tmp2, null ; <i1> [#uses=1]35 br i1 %tmp14.old, label %return, label %cond_next1836 37cond_next18: ; preds = %cond_next12, %cond_true38 %tmp21 = getelementptr %struct.tree_type, ptr %tmp2, i32 0, i32 17 ; <ptr> [#uses=1]39 %tmp22 = load ptr, ptr %tmp21 ; <ptr> [#uses=6]40 %tmp24 = icmp eq ptr %tmp22, %tmp23 ; <i1> [#uses=1]41 br i1 %tmp24, label %return, label %cond_next2842 43cond_next28: ; preds = %cond_next1844 %tmp = getelementptr %struct.tree_common, ptr %tmp2, i32 0, i32 2 ; <ptr> [#uses=1]45 %tmp.upgrd.2 = load i32, ptr %tmp ; <i32> [#uses=1]46 %tmp32 = trunc i32 %tmp.upgrd.2 to i8 ; <i8> [#uses=1]47 %tmp33 = icmp eq i8 %tmp32, 7 ; <i1> [#uses=1]48 br i1 %tmp33, label %cond_true34, label %cond_next8449 50cond_true34: ; preds = %cond_next2851 %tmp40 = icmp eq ptr %tmp22, %tmp39 ; <i1> [#uses=1]52 %tmp49 = icmp eq ptr %tmp22, %tmp48 ; <i1> [#uses=1]53 %bothcond6 = or i1 %tmp40, %tmp49 ; <i1> [#uses=1]54 %tmp58 = icmp eq ptr %tmp22, %tmp57 ; <i1> [#uses=1]55 %bothcond7 = or i1 %bothcond6, %tmp58 ; <i1> [#uses=1]56 %tmp67 = icmp eq ptr %tmp22, %tmp66 ; <i1> [#uses=1]57 %bothcond8 = or i1 %bothcond7, %tmp67 ; <i1> [#uses=1]58 %tmp76 = icmp eq ptr %tmp22, %tmp75 ; <i1> [#uses=1]59 %bothcond9 = or i1 %bothcond8, %tmp76 ; <i1> [#uses=2]60 %brmerge = or i1 %bothcond9, %tmp.upgrd.6 ; <i1> [#uses=1]61 %bothcond9.upgrd.3 = zext i1 %bothcond9 to i32 ; <i32> [#uses=1]62 %.mux = xor i32 %bothcond9.upgrd.3, 1 ; <i32> [#uses=1]63 br i1 %brmerge, label %return, label %cond_true9264 65cond_next84: ; preds = %cond_next2866 br i1 %tmp.upgrd.6, label %return, label %cond_true9267 68cond_true92.preheader: ; preds = %entry69 %tmp7 = load ptr, ptr @void_type_node ; <ptr> [#uses=1]70 %tmp23 = load ptr, ptr @float_type_node ; <ptr> [#uses=1]71 %tmp39 = load ptr, ptr @char_type_node ; <ptr> [#uses=1]72 %tmp48 = load ptr, ptr @signed_char_type_node ; <ptr> [#uses=1]73 %tmp57 = load ptr, ptr @unsigned_char_type_node ; <ptr> [#uses=1]74 %tmp66 = load ptr, ptr @short_integer_type_node ; <ptr> [#uses=1]75 %tmp75 = load ptr, ptr @short_unsigned_type_node ; <ptr> [#uses=1]76 br label %cond_true9277 78cond_true92: ; preds = %cond_true92.preheader, %cond_next84, %cond_true3479 %t.0.0 = phi ptr [ %parms, %cond_true92.preheader ], [ %tmp6, %cond_true34 ], [ %tmp6, %cond_next84 ] ; <ptr> [#uses=2]80 %tmp.upgrd.5 = getelementptr %struct.tree_list, ptr %t.0.0, i32 0, i32 2 ; <ptr> [#uses=1]81 %tmp2 = load ptr, ptr %tmp.upgrd.5 ; <ptr> [#uses=5]82 %tmp5 = getelementptr %struct.tree_common, ptr %t.0.0, i32 0, i32 0 ; <ptr> [#uses=1]83 %tmp6 = load ptr, ptr %tmp5 ; <ptr> [#uses=3]84 %tmp.upgrd.6 = icmp eq ptr %tmp6, null ; <i1> [#uses=3]85 br i1 %tmp.upgrd.6, label %cond_true, label %cond_next1286 87return: ; preds = %cond_next84, %cond_true34, %cond_next18, %cond_next12, %cond_true, %entry88 %retval.0 = phi i32 [ 1, %entry ], [ 1, %cond_next84 ], [ %.mux, %cond_true34 ], [ 0, %cond_next18 ], [ 0, %cond_next12 ], [ 0, %cond_true ] ; <i32> [#uses=1]89 ret i32 %retval.090}91