; Make sure this doesn't turn into an infinite loop
; RUN: opt < %s -passes=simplifycfg,instsimplify,simplifycfg -simplifycfg-require-and-preserve-domtree=1 | llvm-dis | FileCheck %s
%struct.anon = type { i32, i32, i32, i32, [1024 x i8] }
@_zero_ = external global ptr ; <ptr> [#uses=2]
@_one_ = external global ptr ; <ptr> [#uses=4]
@str = internal constant [4 x i8] c"%d\0A\00" ; <ptr> [#uses=0]
declare i32 @bc_compare(ptr, ptr)
declare void @free_num(ptr)
declare ptr @copy_num(ptr)
declare void @init_num(ptr)
declare ptr @new_num(i32, i32)
declare void @int2num(ptr, i32)
declare void @bc_multiply(ptr, ptr, ptr, i32)
declare void @bc_raise(ptr, ptr, ptr, i32)
declare i32 @bc_divide(ptr, ptr, ptr, i32)
declare void @bc_add(ptr, ptr, ptr)
declare i32 @_do_compare(ptr, ptr, i32, i32)
declare i32 @printf(ptr, ...)
define i32 @bc_sqrt(ptr %num, i32 %scale) {
entry:
%guess = alloca ptr ; <ptr> [#uses=7]
%guess1 = alloca ptr ; <ptr> [#uses=7]
%point5 = alloca ptr ; <ptr> [#uses=3]
%tmp = load ptr, ptr %num ; <ptr> [#uses=1]
%tmp1 = load ptr, ptr @_zero_ ; <ptr> [#uses=1]
%tmp.upgrd.1 = call i32 @bc_compare( ptr %tmp, ptr %tmp1 ) ; <i32> [#uses=2]
%tmp.upgrd.2 = icmp slt i32 %tmp.upgrd.1, 0 ; <i1> [#uses=1]
br i1 %tmp.upgrd.2, label %cond_true, label %cond_false
cond_true: ; preds = %entry
ret i32 0
cond_false: ; preds = %entry
%tmp5 = icmp eq i32 %tmp.upgrd.1, 0 ; <i1> [#uses=1]
br i1 %tmp5, label %cond_true6, label %cond_next13
cond_true6: ; preds = %cond_false
call void @free_num( ptr %num )
%tmp8 = load ptr, ptr @_zero_ ; <ptr> [#uses=1]
%tmp9 = call ptr @copy_num( ptr %tmp8 ) ; <ptr> [#uses=1]
store ptr %tmp9, ptr %num
ret i32 1
cond_next13: ; preds = %cond_false
%tmp15 = load ptr, ptr %num ; <ptr> [#uses=1]
%tmp16 = load ptr, ptr @_one_ ; <ptr> [#uses=1]
%tmp17 = call i32 @bc_compare( ptr %tmp15, ptr %tmp16 ) ; <i32> [#uses=2]
%tmp19 = icmp eq i32 %tmp17, 0 ; <i1> [#uses=1]
br i1 %tmp19, label %cond_true20, label %cond_next27
cond_true20: ; preds = %cond_next13
call void @free_num( ptr %num )
%tmp22 = load ptr, ptr @_one_ ; <ptr> [#uses=1]
%tmp23 = call ptr @copy_num( ptr %tmp22 ) ; <ptr> [#uses=1]
store ptr %tmp23, ptr %num
ret i32 1
cond_next27: ; preds = %cond_next13
%tmp29 = load ptr, ptr %num ; <ptr> [#uses=1]
%tmp30 = getelementptr %struct.anon, ptr %tmp29, i32 0, i32 2 ; <ptr> [#uses=1]
%tmp31 = load i32, ptr %tmp30 ; <i32> [#uses=2]
%tmp33 = icmp sge i32 %tmp31, %scale ; <i1> [#uses=1]
%max = select i1 %tmp33, i32 %tmp31, i32 %scale ; <i32> [#uses=4]
%tmp35 = add i32 %max, 2 ; <i32> [#uses=0]
call void @init_num( ptr %guess )
call void @init_num( ptr %guess1 )
%tmp36 = call ptr @new_num( i32 1, i32 1 ) ; <ptr> [#uses=2]
store ptr %tmp36, ptr %point5
%tmp.upgrd.3 = getelementptr %struct.anon, ptr %tmp36, i32 0, i32 4, i32 1 ; <ptr> [#uses=1]
store i8 5, ptr %tmp.upgrd.3
%tmp39 = icmp slt i32 %tmp17, 0 ; <i1> [#uses=1]
br i1 %tmp39, label %cond_true40, label %cond_false43
cond_true40: ; preds = %cond_next27
%tmp41 = load ptr, ptr @_one_ ; <ptr> [#uses=1]
%tmp42 = call ptr @copy_num( ptr %tmp41 ) ; <ptr> [#uses=1]
store ptr %tmp42, ptr %guess
br label %bb80.outer
cond_false43: ; preds = %cond_next27
call void @int2num( ptr %guess, i32 10 )
%tmp45 = load ptr, ptr %num ; <ptr> [#uses=1]
%tmp46 = getelementptr %struct.anon, ptr %tmp45, i32 0, i32 1 ; <ptr> [#uses=1]
%tmp47 = load i32, ptr %tmp46 ; <i32> [#uses=1]
call void @int2num( ptr %guess1, i32 %tmp47 )
%tmp48 = load ptr, ptr %guess1 ; <ptr> [#uses=1]
%tmp49 = load ptr, ptr %point5 ; <ptr> [#uses=1]
call void @bc_multiply( ptr %tmp48, ptr %tmp49, ptr %guess1, i32 %max )
%tmp51 = load ptr, ptr %guess1 ; <ptr> [#uses=1]
%tmp52 = getelementptr %struct.anon, ptr %tmp51, i32 0, i32 2 ; <ptr> [#uses=1]
store i32 0, ptr %tmp52
%tmp53 = load ptr, ptr %guess ; <ptr> [#uses=1]
%tmp54 = load ptr, ptr %guess1 ; <ptr> [#uses=1]
call void @bc_raise( ptr %tmp53, ptr %tmp54, ptr %guess, i32 %max )
br label %bb80.outer
bb80.outer: ; preds = %cond_true83, %cond_false43, %cond_true40
%done.1.ph = phi i32 [ 1, %cond_true83 ], [ 0, %cond_true40 ], [ 0, %cond_false43 ] ; <i32> [#uses=1]
br label %bb80
bb80: ; preds = %cond_true83, %bb80.outer
%tmp82 = icmp eq i32 %done.1.ph, 0 ; <i1> [#uses=1]
br i1 %tmp82, label %cond_true83, label %bb86
cond_true83: ; preds = %bb80
%tmp71 = call i32 @_do_compare( ptr null, ptr null, i32 0, i32 1 ) ; <i32> [#uses=1]
%tmp76 = icmp eq i32 %tmp71, 0 ; <i1> [#uses=1]
br i1 %tmp76, label %bb80.outer, label %bb80
; CHECK: bb86
bb86: ; preds = %bb80
call void @free_num( ptr %num )
%tmp88 = load ptr, ptr %guess ; <ptr> [#uses=1]
%tmp89 = load ptr, ptr @_one_ ; <ptr> [#uses=1]
%tmp92 = call i32 @bc_divide( ptr %tmp88, ptr %tmp89, ptr %num, i32 %max ) ; <i32> [#uses=0]
call void @free_num( ptr %guess )
call void @free_num( ptr %guess1 )
call void @free_num( ptr %point5 )
ret i32 1
}
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