1; RUN: llc < %s -march=x86 -mattr=+sse2 | FileCheck %s
2; Increment in loop bb.i28.i adjusted to 2, to prevent loop reversal from
3; kicking in.
4
5declare fastcc void @rdft(i32, i32, double*, i32*, double*)
6
7define fastcc void @mp_sqrt(i32 %n, i32 %radix, i32* %in, i32* %out, i32* %tmp1, i32* %tmp2, i32 %nfft, double* %tmp1fft, double* %tmp2fft, i32* %ip, double* %w) nounwind {
8entry:
9	br label %bb.i5
10
11bb.i5:		; preds = %bb.i5, %entry
12	%nfft_init.0.i = phi i32 [ 1, %entry ], [ %tmp7.i3, %bb.i5 ]		; <i32> [#uses=1]
13	%foo = phi i1 [1, %entry], [0, %bb.i5]
14	%tmp7.i3 = shl i32 %nfft_init.0.i, 1		; <i32> [#uses=2]
15	br i1 %foo, label %bb.i5, label %mp_unexp_mp2d.exit.i
16
17mp_unexp_mp2d.exit.i:		; preds = %bb.i5
18	br i1 %foo, label %cond_next.i, label %cond_true.i
19
20cond_true.i:		; preds = %mp_unexp_mp2d.exit.i
21	ret void
22
23cond_next.i:		; preds = %mp_unexp_mp2d.exit.i
24	%tmp22.i = sdiv i32 0, 2		; <i32> [#uses=2]
25	br i1 %foo, label %cond_true29.i, label %cond_next36.i
26
27cond_true29.i:		; preds = %cond_next.i
28	ret void
29
30cond_next36.i:		; preds = %cond_next.i
31	store i32 %tmp22.i, i32* null, align 4
32	%tmp8.i14.i = select i1 %foo, i32 1, i32 0		; <i32> [#uses=1]
33	br label %bb.i28.i
34
35bb.i28.i:		; preds = %bb.i28.i, %cond_next36.i
36; CHECK: %bb.i28.i
37; CHECK: addl $2
38; CHECK: addl $-2
39	%j.0.reg2mem.0.i16.i = phi i32 [ 0, %cond_next36.i ], [ %indvar.next39.i, %bb.i28.i ]		; <i32> [#uses=2]
40	%din_addr.1.reg2mem.0.i17.i = phi double [ 0.000000e+00, %cond_next36.i ], [ %tmp16.i25.i, %bb.i28.i ]		; <double> [#uses=1]
41	%tmp1.i18.i = fptosi double %din_addr.1.reg2mem.0.i17.i to i32		; <i32> [#uses=2]
42	%tmp4.i19.i = icmp slt i32 %tmp1.i18.i, %radix		; <i1> [#uses=1]
43	%x.0.i21.i = select i1 %tmp4.i19.i, i32 %tmp1.i18.i, i32 0		; <i32> [#uses=1]
44	%tmp41.sum.i = add i32 %j.0.reg2mem.0.i16.i, 2		; <i32> [#uses=0]
45	%tmp1213.i23.i = sitofp i32 %x.0.i21.i to double		; <double> [#uses=1]
46	%tmp15.i24.i = fsub double 0.000000e+00, %tmp1213.i23.i		; <double> [#uses=1]
47	%tmp16.i25.i = fmul double 0.000000e+00, %tmp15.i24.i		; <double> [#uses=1]
48	%indvar.next39.i = add i32 %j.0.reg2mem.0.i16.i, 2		; <i32> [#uses=2]
49	%exitcond40.i = icmp eq i32 %indvar.next39.i, %tmp8.i14.i		; <i1> [#uses=1]
50	br i1 %exitcond40.i, label %mp_unexp_d2mp.exit29.i, label %bb.i28.i
51
52mp_unexp_d2mp.exit29.i:		; preds = %bb.i28.i
53	%tmp46.i = sub i32 0, %tmp22.i		; <i32> [#uses=1]
54	store i32 %tmp46.i, i32* null, align 4
55	br i1 %exitcond40.i, label %bb.i.i, label %mp_sqrt_init.exit
56
57bb.i.i:		; preds = %bb.i.i, %mp_unexp_d2mp.exit29.i
58	br label %bb.i.i
59
60mp_sqrt_init.exit:		; preds = %mp_unexp_d2mp.exit29.i
61	tail call fastcc void @mp_mul_csqu( i32 0, double* %tmp1fft )
62	tail call fastcc void @rdft( i32 0, i32 -1, double* null, i32* %ip, double* %w )
63	tail call fastcc void @mp_mul_d2i( i32 0, i32 %radix, i32 0, double* %tmp1fft, i32* %tmp2 )
64	br i1 %exitcond40.i, label %cond_false.i, label %cond_true36.i
65
66cond_true36.i:		; preds = %mp_sqrt_init.exit
67	ret void
68
69cond_false.i:		; preds = %mp_sqrt_init.exit
70	tail call fastcc void @mp_round( i32 0, i32 %radix, i32 0, i32* %out )
71	tail call fastcc void @mp_add( i32 0, i32 %radix, i32* %tmp1, i32* %tmp2, i32* %tmp1 )
72	tail call fastcc void @mp_sub( i32 0, i32 %radix, i32* %in, i32* %tmp2, i32* %tmp2 )
73	tail call fastcc void @mp_round( i32 0, i32 %radix, i32 0, i32* %tmp1 )
74	tail call fastcc void @mp_mul_d2i( i32 0, i32 %radix, i32 %tmp7.i3, double* %tmp2fft, i32* %tmp2 )
75	ret void
76}
77
78declare fastcc void @mp_add(i32, i32, i32*, i32*, i32*)
79
80declare fastcc void @mp_sub(i32, i32, i32*, i32*, i32*)
81
82declare fastcc void @mp_round(i32, i32, i32, i32*)
83
84declare fastcc void @mp_mul_csqu(i32, double*)
85
86declare fastcc void @mp_mul_d2i(i32, i32, i32, double*, i32*)
87