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; RUN: llc < %s
; Infinite loop in the dag combiner, reduced from 176.gcc.
%struct._obstack_chunk = type { i8*, %struct._obstack_chunk*, [4 x i8] }
%struct.anon = type { i32 }
%struct.lang_decl = type opaque
%struct.lang_type = type { i32, [1 x %struct.tree_node*] }
%struct.obstack = type { i32, %struct._obstack_chunk*, i8*, i8*, i8*, i32, i32, %struct._obstack_chunk* (...)*, void (...)*, i8*, i8 }
%struct.rtx_def = type { i16, i8, i8, [1 x %struct.anon] }
%struct.tree_common = type { %struct.tree_node*, %struct.tree_node*, i8, i8, i8, i8 }
%struct.tree_decl = type { [12 x i8], i8*, i32, %struct.tree_node*, i32, i8, i8, i8, i8, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.rtx_def*, %struct.anon, { %struct.rtx_def* }, %struct.tree_node*, %struct.lang_decl* }
%struct.tree_list = type { [12 x i8], %struct.tree_node*, %struct.tree_node* }
%struct.tree_node = type { %struct.tree_decl }
%struct.tree_type = type { [12 x i8], %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, i32, i8, i8, i8, i8, i32, %struct.tree_node*, %struct.tree_node*, %struct.anon, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.obstack*, %struct.lang_type* }
@void_type_node = external global %struct.tree_node* ; <%struct.tree_node**> [#uses=1]
@char_type_node = external global %struct.tree_node* ; <%struct.tree_node**> [#uses=1]
@short_integer_type_node = external global %struct.tree_node* ; <%struct.tree_node**> [#uses=1]
@short_unsigned_type_node = external global %struct.tree_node* ; <%struct.tree_node**> [#uses=1]
@float_type_node = external global %struct.tree_node* ; <%struct.tree_node**> [#uses=1]
@signed_char_type_node = external global %struct.tree_node* ; <%struct.tree_node**> [#uses=1]
@unsigned_char_type_node = external global %struct.tree_node* ; <%struct.tree_node**> [#uses=1]
define fastcc i32 @self_promoting_args_p(%struct.tree_node* %parms) {
entry:
%tmp915 = icmp eq %struct.tree_node* %parms, null ; <i1> [#uses=1]
br i1 %tmp915, label %return, label %cond_true92.preheader
cond_true: ; preds = %cond_true92
%tmp9.not = icmp ne %struct.tree_node* %tmp2, %tmp7 ; <i1> [#uses=1]
%tmp14 = icmp eq %struct.tree_node* %tmp2, null ; <i1> [#uses=1]
%bothcond = or i1 %tmp9.not, %tmp14 ; <i1> [#uses=1]
br i1 %bothcond, label %return, label %cond_next18
cond_next12: ; preds = %cond_true92
%tmp14.old = icmp eq %struct.tree_node* %tmp2, null ; <i1> [#uses=1]
br i1 %tmp14.old, label %return, label %cond_next18
cond_next18: ; preds = %cond_next12, %cond_true
%tmp20 = bitcast %struct.tree_node* %tmp2 to %struct.tree_type* ; <%struct.tree_type*> [#uses=1]
%tmp21 = getelementptr %struct.tree_type, %struct.tree_type* %tmp20, i32 0, i32 17 ; <%struct.tree_node**> [#uses=1]
%tmp22 = load %struct.tree_node*, %struct.tree_node** %tmp21 ; <%struct.tree_node*> [#uses=6]
%tmp24 = icmp eq %struct.tree_node* %tmp22, %tmp23 ; <i1> [#uses=1]
br i1 %tmp24, label %return, label %cond_next28
cond_next28: ; preds = %cond_next18
%tmp30 = bitcast %struct.tree_node* %tmp2 to %struct.tree_common* ; <%struct.tree_common*> [#uses=1]
%tmp = getelementptr %struct.tree_common, %struct.tree_common* %tmp30, i32 0, i32 2 ; <i8*> [#uses=1]
%tmp.upgrd.1 = bitcast i8* %tmp to i32* ; <i32*> [#uses=1]
%tmp.upgrd.2 = load i32, i32* %tmp.upgrd.1 ; <i32> [#uses=1]
%tmp32 = trunc i32 %tmp.upgrd.2 to i8 ; <i8> [#uses=1]
%tmp33 = icmp eq i8 %tmp32, 7 ; <i1> [#uses=1]
br i1 %tmp33, label %cond_true34, label %cond_next84
cond_true34: ; preds = %cond_next28
%tmp40 = icmp eq %struct.tree_node* %tmp22, %tmp39 ; <i1> [#uses=1]
%tmp49 = icmp eq %struct.tree_node* %tmp22, %tmp48 ; <i1> [#uses=1]
%bothcond6 = or i1 %tmp40, %tmp49 ; <i1> [#uses=1]
%tmp58 = icmp eq %struct.tree_node* %tmp22, %tmp57 ; <i1> [#uses=1]
%bothcond7 = or i1 %bothcond6, %tmp58 ; <i1> [#uses=1]
%tmp67 = icmp eq %struct.tree_node* %tmp22, %tmp66 ; <i1> [#uses=1]
%bothcond8 = or i1 %bothcond7, %tmp67 ; <i1> [#uses=1]
%tmp76 = icmp eq %struct.tree_node* %tmp22, %tmp75 ; <i1> [#uses=1]
%bothcond9 = or i1 %bothcond8, %tmp76 ; <i1> [#uses=2]
%brmerge = or i1 %bothcond9, %tmp.upgrd.6 ; <i1> [#uses=1]
%bothcond9.upgrd.3 = zext i1 %bothcond9 to i32 ; <i32> [#uses=1]
%.mux = xor i32 %bothcond9.upgrd.3, 1 ; <i32> [#uses=1]
br i1 %brmerge, label %return, label %cond_true92
cond_next84: ; preds = %cond_next28
br i1 %tmp.upgrd.6, label %return, label %cond_true92
cond_true92.preheader: ; preds = %entry
%tmp7 = load %struct.tree_node*, %struct.tree_node** @void_type_node ; <%struct.tree_node*> [#uses=1]
%tmp23 = load %struct.tree_node*, %struct.tree_node** @float_type_node ; <%struct.tree_node*> [#uses=1]
%tmp39 = load %struct.tree_node*, %struct.tree_node** @char_type_node ; <%struct.tree_node*> [#uses=1]
%tmp48 = load %struct.tree_node*, %struct.tree_node** @signed_char_type_node ; <%struct.tree_node*> [#uses=1]
%tmp57 = load %struct.tree_node*, %struct.tree_node** @unsigned_char_type_node ; <%struct.tree_node*> [#uses=1]
%tmp66 = load %struct.tree_node*, %struct.tree_node** @short_integer_type_node ; <%struct.tree_node*> [#uses=1]
%tmp75 = load %struct.tree_node*, %struct.tree_node** @short_unsigned_type_node ; <%struct.tree_node*> [#uses=1]
br label %cond_true92
cond_true92: ; preds = %cond_true92.preheader, %cond_next84, %cond_true34
%t.0.0 = phi %struct.tree_node* [ %parms, %cond_true92.preheader ], [ %tmp6, %cond_true34 ], [ %tmp6, %cond_next84 ] ; <%struct.tree_node*> [#uses=2]
%tmp.upgrd.4 = bitcast %struct.tree_node* %t.0.0 to %struct.tree_list* ; <%struct.tree_list*> [#uses=1]
%tmp.upgrd.5 = getelementptr %struct.tree_list, %struct.tree_list* %tmp.upgrd.4, i32 0, i32 2 ; <%struct.tree_node**> [#uses=1]
%tmp2 = load %struct.tree_node*, %struct.tree_node** %tmp.upgrd.5 ; <%struct.tree_node*> [#uses=5]
%tmp4 = bitcast %struct.tree_node* %t.0.0 to %struct.tree_common* ; <%struct.tree_common*> [#uses=1]
%tmp5 = getelementptr %struct.tree_common, %struct.tree_common* %tmp4, i32 0, i32 0 ; <%struct.tree_node**> [#uses=1]
%tmp6 = load %struct.tree_node*, %struct.tree_node** %tmp5 ; <%struct.tree_node*> [#uses=3]
%tmp.upgrd.6 = icmp eq %struct.tree_node* %tmp6, null ; <i1> [#uses=3]
br i1 %tmp.upgrd.6, label %cond_true, label %cond_next12
return: ; preds = %cond_next84, %cond_true34, %cond_next18, %cond_next12, %cond_true, %entry
%retval.0 = phi i32 [ 1, %entry ], [ 1, %cond_next84 ], [ %.mux, %cond_true34 ], [ 0, %cond_next18 ], [ 0, %cond_next12 ], [ 0, %cond_true ] ; <i32> [#uses=1]
ret i32 %retval.0
}
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