| blob | 77edf3c5f8c2f3ebf108e946c1e3cb0469f96713 |
1 ; Test strict 64-bit floating-point addition.
2 ;
3 ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 \
4 ; RUN: | FileCheck -check-prefix=CHECK -check-prefix=CHECK-SCALAR %s
5 ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 -verify-machineinstrs | FileCheck %s
6 declare double @foo()
7 declare double @llvm.experimental.constrained.fadd.f64(double, double, metadata, metadata)
9 ; Check register addition.
10 define double @f1(double %f1, double %f2) #0 {
11 ; CHECK-LABEL: f1:
12 ; CHECK: adbr %f0, %f2
13 ; CHECK: br %r14
14 %res = call double @llvm.experimental.constrained.fadd.f64(
15 double %f1, double %f2,
16 metadata !"round.dynamic",
17 metadata !"fpexcept.strict") #0
18 ret double %res
19 }
21 ; Check the low end of the ADB range.
22 define double @f2(double %f1, ptr %ptr) #0 {
23 ; CHECK-LABEL: f2:
24 ; CHECK: adb %f0, 0(%r2)
25 ; CHECK: br %r14
26 %f2 = load double, ptr %ptr
27 %res = call double @llvm.experimental.constrained.fadd.f64(
28 double %f1, double %f2,
29 metadata !"round.dynamic",
30 metadata !"fpexcept.strict") #0
31 ret double %res
32 }
34 ; Check the high end of the aligned ADB range.
35 define double @f3(double %f1, ptr %base) #0 {
36 ; CHECK-LABEL: f3:
37 ; CHECK: adb %f0, 4088(%r2)
38 ; CHECK: br %r14
39 %ptr = getelementptr double, ptr %base, i64 511
40 %f2 = load double, ptr %ptr
41 %res = call double @llvm.experimental.constrained.fadd.f64(
42 double %f1, double %f2,
43 metadata !"round.dynamic",
44 metadata !"fpexcept.strict") #0
45 ret double %res
46 }
48 ; Check the next doubleword up, which needs separate address logic.
49 ; Other sequences besides this one would be OK.
50 define double @f4(double %f1, ptr %base) #0 {
51 ; CHECK-LABEL: f4:
52 ; CHECK: aghi %r2, 4096
53 ; CHECK: adb %f0, 0(%r2)
54 ; CHECK: br %r14
55 %ptr = getelementptr double, ptr %base, i64 512
56 %f2 = load double, ptr %ptr
57 %res = call double @llvm.experimental.constrained.fadd.f64(
58 double %f1, double %f2,
59 metadata !"round.dynamic",
60 metadata !"fpexcept.strict") #0
61 ret double %res
62 }
64 ; Check negative displacements, which also need separate address logic.
65 define double @f5(double %f1, ptr %base) #0 {
66 ; CHECK-LABEL: f5:
67 ; CHECK: aghi %r2, -8
68 ; CHECK: adb %f0, 0(%r2)
69 ; CHECK: br %r14
70 %ptr = getelementptr double, ptr %base, i64 -1
71 %f2 = load double, ptr %ptr
72 %res = call double @llvm.experimental.constrained.fadd.f64(
73 double %f1, double %f2,
74 metadata !"round.dynamic",
75 metadata !"fpexcept.strict") #0
76 ret double %res
77 }
79 ; Check that ADB allows indices.
80 define double @f6(double %f1, ptr %base, i64 %index) #0 {
81 ; CHECK-LABEL: f6:
82 ; CHECK: sllg %r1, %r3, 3
83 ; CHECK: adb %f0, 800(%r1,%r2)
84 ; CHECK: br %r14
85 %ptr1 = getelementptr double, ptr %base, i64 %index
86 %ptr2 = getelementptr double, ptr %ptr1, i64 100
87 %f2 = load double, ptr %ptr2
88 %res = call double @llvm.experimental.constrained.fadd.f64(
89 double %f1, double %f2,
90 metadata !"round.dynamic",
91 metadata !"fpexcept.strict") #0
92 ret double %res
93 }
95 ; Check that additions of spilled values can use ADB rather than ADBR.
96 define double @f7(ptr %ptr0) #0 {
97 ; CHECK-LABEL: f7:
98 ; CHECK: brasl %r14, foo@PLT
99 ; CHECK-SCALAR: adb %f0, 160(%r15)
100 ; CHECK: br %r14
101 %ptr1 = getelementptr double, ptr %ptr0, i64 2
102 %ptr2 = getelementptr double, ptr %ptr0, i64 4
103 %ptr3 = getelementptr double, ptr %ptr0, i64 6
104 %ptr4 = getelementptr double, ptr %ptr0, i64 8
105 %ptr5 = getelementptr double, ptr %ptr0, i64 10
106 %ptr6 = getelementptr double, ptr %ptr0, i64 12
107 %ptr7 = getelementptr double, ptr %ptr0, i64 14
108 %ptr8 = getelementptr double, ptr %ptr0, i64 16
109 %ptr9 = getelementptr double, ptr %ptr0, i64 18
110 %ptr10 = getelementptr double, ptr %ptr0, i64 20
112 %val0 = load double, ptr %ptr0
113 %val1 = load double, ptr %ptr1
114 %val2 = load double, ptr %ptr2
115 %val3 = load double, ptr %ptr3
116 %val4 = load double, ptr %ptr4
117 %val5 = load double, ptr %ptr5
118 %val6 = load double, ptr %ptr6
119 %val7 = load double, ptr %ptr7
120 %val8 = load double, ptr %ptr8
121 %val9 = load double, ptr %ptr9
122 %val10 = load double, ptr %ptr10
124 %ret = call double @foo() #0
126 %add0 = call double @llvm.experimental.constrained.fadd.f64(
127 double %ret, double %val0,
128 metadata !"round.dynamic",
129 metadata !"fpexcept.strict") #0
130 %add1 = call double @llvm.experimental.constrained.fadd.f64(
131 double %add0, double %val1,
132 metadata !"round.dynamic",
133 metadata !"fpexcept.strict") #0
134 %add2 = call double @llvm.experimental.constrained.fadd.f64(
135 double %add1, double %val2,
136 metadata !"round.dynamic",
137 metadata !"fpexcept.strict") #0
138 %add3 = call double @llvm.experimental.constrained.fadd.f64(
139 double %add2, double %val3,
140 metadata !"round.dynamic",
141 metadata !"fpexcept.strict") #0
142 %add4 = call double @llvm.experimental.constrained.fadd.f64(
143 double %add3, double %val4,
144 metadata !"round.dynamic",
145 metadata !"fpexcept.strict") #0
146 %add5 = call double @llvm.experimental.constrained.fadd.f64(
147 double %add4, double %val5,
148 metadata !"round.dynamic",
149 metadata !"fpexcept.strict") #0
150 %add6 = call double @llvm.experimental.constrained.fadd.f64(
151 double %add5, double %val6,
152 metadata !"round.dynamic",
153 metadata !"fpexcept.strict") #0
154 %add7 = call double @llvm.experimental.constrained.fadd.f64(
155 double %add6, double %val7,
156 metadata !"round.dynamic",
157 metadata !"fpexcept.strict") #0
158 %add8 = call double @llvm.experimental.constrained.fadd.f64(
159 double %add7, double %val8,
160 metadata !"round.dynamic",
161 metadata !"fpexcept.strict") #0
162 %add9 = call double @llvm.experimental.constrained.fadd.f64(
163 double %add8, double %val9,
164 metadata !"round.dynamic",
165 metadata !"fpexcept.strict") #0
166 %add10 = call double @llvm.experimental.constrained.fadd.f64(
167 double %add9, double %val10,
168 metadata !"round.dynamic",
169 metadata !"fpexcept.strict") #0
171 ret double %add10
172 }
174 attributes #0 = { strictfp }