1; Test multiplication of two f32s, producing an f64 result.
2;
3; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
4
5declare float @foo()
6
7; Check register multiplication.
8define double @f1(float %f1, float %f2) {
9; CHECK-LABEL: f1:
10; CHECK: mdebr %f0, %f2
11; CHECK: br %r14
12  %f1x = fpext float %f1 to double
13  %f2x = fpext float %f2 to double
14  %res = fmul double %f1x, %f2x
15  ret double %res
16}
17
18; Check the low end of the MDEB range.
19define double @f2(float %f1, float *%ptr) {
20; CHECK-LABEL: f2:
21; CHECK: mdeb %f0, 0(%r2)
22; CHECK: br %r14
23  %f2 = load float *%ptr
24  %f1x = fpext float %f1 to double
25  %f2x = fpext float %f2 to double
26  %res = fmul double %f1x, %f2x
27  ret double %res
28}
29
30; Check the high end of the aligned MDEB range.
31define double @f3(float %f1, float *%base) {
32; CHECK-LABEL: f3:
33; CHECK: mdeb %f0, 4092(%r2)
34; CHECK: br %r14
35  %ptr = getelementptr float *%base, i64 1023
36  %f2 = load float *%ptr
37  %f1x = fpext float %f1 to double
38  %f2x = fpext float %f2 to double
39  %res = fmul double %f1x, %f2x
40  ret double %res
41}
42
43; Check the next word up, which needs separate address logic.
44; Other sequences besides this one would be OK.
45define double @f4(float %f1, float *%base) {
46; CHECK-LABEL: f4:
47; CHECK: aghi %r2, 4096
48; CHECK: mdeb %f0, 0(%r2)
49; CHECK: br %r14
50  %ptr = getelementptr float *%base, i64 1024
51  %f2 = load float *%ptr
52  %f1x = fpext float %f1 to double
53  %f2x = fpext float %f2 to double
54  %res = fmul double %f1x, %f2x
55  ret double %res
56}
57
58; Check negative displacements, which also need separate address logic.
59define double @f5(float %f1, float *%base) {
60; CHECK-LABEL: f5:
61; CHECK: aghi %r2, -4
62; CHECK: mdeb %f0, 0(%r2)
63; CHECK: br %r14
64  %ptr = getelementptr float *%base, i64 -1
65  %f2 = load float *%ptr
66  %f1x = fpext float %f1 to double
67  %f2x = fpext float %f2 to double
68  %res = fmul double %f1x, %f2x
69  ret double %res
70}
71
72; Check that MDEB allows indices.
73define double @f6(float %f1, float *%base, i64 %index) {
74; CHECK-LABEL: f6:
75; CHECK: sllg %r1, %r3, 2
76; CHECK: mdeb %f0, 400(%r1,%r2)
77; CHECK: br %r14
78  %ptr1 = getelementptr float *%base, i64 %index
79  %ptr2 = getelementptr float *%ptr1, i64 100
80  %f2 = load float *%ptr2
81  %f1x = fpext float %f1 to double
82  %f2x = fpext float %f2 to double
83  %res = fmul double %f1x, %f2x
84  ret double %res
85}
86
87; Check that multiplications of spilled values can use MDEB rather than MDEBR.
88define float @f7(float *%ptr0) {
89; CHECK-LABEL: f7:
90; CHECK: brasl %r14, foo@PLT
91; CHECK: mdeb %f0, 16{{[04]}}(%r15)
92; CHECK: br %r14
93  %ptr1 = getelementptr float *%ptr0, i64 2
94  %ptr2 = getelementptr float *%ptr0, i64 4
95  %ptr3 = getelementptr float *%ptr0, i64 6
96  %ptr4 = getelementptr float *%ptr0, i64 8
97  %ptr5 = getelementptr float *%ptr0, i64 10
98  %ptr6 = getelementptr float *%ptr0, i64 12
99  %ptr7 = getelementptr float *%ptr0, i64 14
100  %ptr8 = getelementptr float *%ptr0, i64 16
101  %ptr9 = getelementptr float *%ptr0, i64 18
102  %ptr10 = getelementptr float *%ptr0, i64 20
103
104  %val0 = load float *%ptr0
105  %val1 = load float *%ptr1
106  %val2 = load float *%ptr2
107  %val3 = load float *%ptr3
108  %val4 = load float *%ptr4
109  %val5 = load float *%ptr5
110  %val6 = load float *%ptr6
111  %val7 = load float *%ptr7
112  %val8 = load float *%ptr8
113  %val9 = load float *%ptr9
114  %val10 = load float *%ptr10
115
116  %frob0 = fadd float %val0, %val0
117  %frob1 = fadd float %val1, %val1
118  %frob2 = fadd float %val2, %val2
119  %frob3 = fadd float %val3, %val3
120  %frob4 = fadd float %val4, %val4
121  %frob5 = fadd float %val5, %val5
122  %frob6 = fadd float %val6, %val6
123  %frob7 = fadd float %val7, %val7
124  %frob8 = fadd float %val8, %val8
125  %frob9 = fadd float %val9, %val9
126  %frob10 = fadd float %val9, %val10
127
128  store float %frob0, float *%ptr0
129  store float %frob1, float *%ptr1
130  store float %frob2, float *%ptr2
131  store float %frob3, float *%ptr3
132  store float %frob4, float *%ptr4
133  store float %frob5, float *%ptr5
134  store float %frob6, float *%ptr6
135  store float %frob7, float *%ptr7
136  store float %frob8, float *%ptr8
137  store float %frob9, float *%ptr9
138  store float %frob10, float *%ptr10
139
140  %ret = call float @foo()
141
142  %accext0 = fpext float %ret to double
143  %ext0 = fpext float %frob0 to double
144  %mul0 = fmul double %accext0, %ext0
145  %extra0 = fmul double %mul0, 1.01
146  %trunc0 = fptrunc double %extra0 to float
147
148  %accext1 = fpext float %trunc0 to double
149  %ext1 = fpext float %frob1 to double
150  %mul1 = fmul double %accext1, %ext1
151  %extra1 = fmul double %mul1, 1.11
152  %trunc1 = fptrunc double %extra1 to float
153
154  %accext2 = fpext float %trunc1 to double
155  %ext2 = fpext float %frob2 to double
156  %mul2 = fmul double %accext2, %ext2
157  %extra2 = fmul double %mul2, 1.21
158  %trunc2 = fptrunc double %extra2 to float
159
160  %accext3 = fpext float %trunc2 to double
161  %ext3 = fpext float %frob3 to double
162  %mul3 = fmul double %accext3, %ext3
163  %extra3 = fmul double %mul3, 1.31
164  %trunc3 = fptrunc double %extra3 to float
165
166  %accext4 = fpext float %trunc3 to double
167  %ext4 = fpext float %frob4 to double
168  %mul4 = fmul double %accext4, %ext4
169  %extra4 = fmul double %mul4, 1.41
170  %trunc4 = fptrunc double %extra4 to float
171
172  %accext5 = fpext float %trunc4 to double
173  %ext5 = fpext float %frob5 to double
174  %mul5 = fmul double %accext5, %ext5
175  %extra5 = fmul double %mul5, 1.51
176  %trunc5 = fptrunc double %extra5 to float
177
178  %accext6 = fpext float %trunc5 to double
179  %ext6 = fpext float %frob6 to double
180  %mul6 = fmul double %accext6, %ext6
181  %extra6 = fmul double %mul6, 1.61
182  %trunc6 = fptrunc double %extra6 to float
183
184  %accext7 = fpext float %trunc6 to double
185  %ext7 = fpext float %frob7 to double
186  %mul7 = fmul double %accext7, %ext7
187  %extra7 = fmul double %mul7, 1.71
188  %trunc7 = fptrunc double %extra7 to float
189
190  %accext8 = fpext float %trunc7 to double
191  %ext8 = fpext float %frob8 to double
192  %mul8 = fmul double %accext8, %ext8
193  %extra8 = fmul double %mul8, 1.81
194  %trunc8 = fptrunc double %extra8 to float
195
196  %accext9 = fpext float %trunc8 to double
197  %ext9 = fpext float %frob9 to double
198  %mul9 = fmul double %accext9, %ext9
199  %extra9 = fmul double %mul9, 1.91
200  %trunc9 = fptrunc double %extra9 to float
201
202  ret float %trunc9
203}
204