1; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt -wasm-keep-registers | FileCheck %s
2
3; Usually MIPS hosts uses a legacy (non IEEE 754-2008) encoding for NaNs.
4; Tests like `nan_f32` failed in attempt to compare hard-coded IEEE 754-2008
5; NaN value and a legacy NaN value provided by a system.
6; XFAIL: mips-, mipsel-, mips64-, mips64el-
7
8; Test that basic immediates assemble as expected.
9
10target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
11target triple = "wasm32-unknown-unknown"
12
13; CHECK-LABEL: zero_i32:
14; CHECK-NEXT: .functype zero_i32 () -> (i32){{$}}
15; CHECK-NEXT: i32.const $push[[NUM:[0-9]+]]=, 0{{$}}
16; CHECK-NEXT: return $pop[[NUM]]{{$}}
17define i32 @zero_i32() {
18  ret i32 0
19}
20
21; CHECK-LABEL: one_i32:
22; CHECK-NEXT: .functype one_i32 () -> (i32){{$}}
23; CHECK-NEXT: i32.const $push[[NUM:[0-9]+]]=, 1{{$}}
24; CHECK-NEXT: return $pop[[NUM]]{{$}}
25define i32 @one_i32() {
26  ret i32 1
27}
28
29; CHECK-LABEL: max_i32:
30; CHECK-NEXT: .functype max_i32 () -> (i32){{$}}
31; CHECK-NEXT: i32.const $push[[NUM:[0-9]+]]=, 2147483647{{$}}
32; CHECK-NEXT: return $pop[[NUM]]{{$}}
33define i32 @max_i32() {
34  ret i32 2147483647
35}
36
37; CHECK-LABEL: min_i32:
38; CHECK-NEXT: .functype min_i32 () -> (i32){{$}}
39; CHECK-NEXT: i32.const $push[[NUM:[0-9]+]]=, -2147483648{{$}}
40; CHECK-NEXT: return $pop[[NUM]]{{$}}
41define i32 @min_i32() {
42  ret i32 -2147483648
43}
44
45; CHECK-LABEL: zero_i64:
46; CHECK-NEXT: .functype zero_i64 () -> (i64){{$}}
47; CHECK-NEXT: i64.const $push[[NUM:[0-9]+]]=, 0{{$}}
48; CHECK-NEXT: return $pop[[NUM]]{{$}}
49define i64 @zero_i64() {
50  ret i64 0
51}
52
53; CHECK-LABEL: one_i64:
54; CHECK-NEXT: .functype one_i64 () -> (i64){{$}}
55; CHECK-NEXT: i64.const $push[[NUM:[0-9]+]]=, 1{{$}}
56; CHECK-NEXT: return $pop[[NUM]]{{$}}
57define i64 @one_i64() {
58  ret i64 1
59}
60
61; CHECK-LABEL: max_i64:
62; CHECK-NEXT: .functype max_i64 () -> (i64){{$}}
63; CHECK-NEXT: i64.const $push[[NUM:[0-9]+]]=, 9223372036854775807{{$}}
64; CHECK-NEXT: return $pop[[NUM]]{{$}}
65define i64 @max_i64() {
66  ret i64 9223372036854775807
67}
68
69; CHECK-LABEL: min_i64:
70; CHECK-NEXT: .functype min_i64 () -> (i64){{$}}
71; CHECK-NEXT: i64.const $push[[NUM:[0-9]+]]=, -9223372036854775808{{$}}
72; CHECK-NEXT: return $pop[[NUM]]{{$}}
73define i64 @min_i64() {
74  ret i64 -9223372036854775808
75}
76
77; CHECK-LABEL: negzero_f32:
78; CHECK-NEXT: .functype negzero_f32 () -> (f32){{$}}
79; CHECK-NEXT: f32.const $push[[NUM:[0-9]+]]=, -0x0p0{{$}}
80; CHECK-NEXT: return $pop[[NUM]]{{$}}
81define float @negzero_f32() {
82  ret float -0.0
83}
84
85; CHECK-LABEL: zero_f32:
86; CHECK-NEXT: .functype zero_f32 () -> (f32){{$}}
87; CHECK-NEXT: f32.const $push[[NUM:[0-9]+]]=, 0x0p0{{$}}
88; CHECK-NEXT: return $pop[[NUM]]{{$}}
89define float @zero_f32() {
90  ret float 0.0
91}
92
93; CHECK-LABEL: one_f32:
94; CHECK-NEXT: .functype one_f32 () -> (f32){{$}}
95; CHECK-NEXT: f32.const $push[[NUM:[0-9]+]]=, 0x1p0{{$}}
96; CHECK-NEXT: return $pop[[NUM]]{{$}}
97define float @one_f32() {
98  ret float 1.0
99}
100
101; CHECK-LABEL: two_f32:
102; CHECK-NEXT: .functype two_f32 () -> (f32){{$}}
103; CHECK-NEXT: f32.const $push[[NUM:[0-9]+]]=, 0x1p1{{$}}
104; CHECK-NEXT: return $pop[[NUM]]{{$}}
105define float @two_f32() {
106  ret float 2.0
107}
108
109; CHECK-LABEL: nan_f32:
110; CHECK-NEXT: .functype nan_f32 () -> (f32){{$}}
111; CHECK-NEXT: f32.const $push[[NUM:[0-9]+]]=, nan{{$}}
112; CHECK-NEXT: return $pop[[NUM]]{{$}}
113define float @nan_f32() {
114  ret float 0x7FF8000000000000
115}
116
117; CHECK-LABEL: negnan_f32:
118; CHECK-NEXT: .functype negnan_f32 () -> (f32){{$}}
119; CHECK-NEXT: f32.const $push[[NUM:[0-9]+]]=, -nan{{$}}
120; CHECK-NEXT: return $pop[[NUM]]{{$}}
121define float @negnan_f32() {
122  ret float 0xFFF8000000000000
123}
124
125; CHECK-LABEL: inf_f32:
126; CHECK-NEXT: .functype inf_f32 () -> (f32){{$}}
127; CHECK-NEXT: f32.const $push[[NUM:[0-9]+]]=, infinity{{$}}
128; CHECK-NEXT: return $pop[[NUM]]{{$}}
129define float @inf_f32() {
130  ret float 0x7FF0000000000000
131}
132
133; CHECK-LABEL: neginf_f32:
134; CHECK-NEXT: .functype neginf_f32 () -> (f32){{$}}
135; CHECK-NEXT: f32.const $push[[NUM:[0-9]+]]=, -infinity{{$}}
136; CHECK-NEXT: return $pop[[NUM]]{{$}}
137define float @neginf_f32() {
138  ret float 0xFFF0000000000000
139}
140
141; CHECK-LABEL: custom_nan_f32:
142; CHECK-NEXT: .functype custom_nan_f32 () -> (f32){{$}}
143; CHECK-NEXT: f32.const $push[[NUM:[0-9]+]]=, -nan:0x6bcdef{{$}}
144; CHECK-NEXT: return $pop[[NUM]]{{$}}
145define float @custom_nan_f32() {
146  ret float 0xFFFD79BDE0000000
147}
148
149; TODO: LLVM's MC layer stores f32 operands as host doubles, requiring a
150; conversion, so the bits of the NaN are not fully preserved.
151
152; CHECK-LABEL: custom_nans_f32:
153; CHECK-NEXT: .functype custom_nans_f32 () -> (f32){{$}}
154; CHECK-NEXT: f32.const $push[[NUM:[0-9]+]]=, -nan:0x6bcdef{{$}}
155; CHECK-NEXT: return $pop[[NUM]]{{$}}
156define float @custom_nans_f32() {
157  ret float 0xFFF579BDE0000000
158}
159
160; CHECK-LABEL: negzero_f64:
161; CHECK-NEXT: .functype negzero_f64 () -> (f64){{$}}
162; CHECK-NEXT: f64.const $push[[NUM:[0-9]+]]=, -0x0p0{{$}}
163; CHECK-NEXT: return $pop[[NUM]]{{$}}
164define double @negzero_f64() {
165  ret double -0.0
166}
167
168; CHECK-LABEL: zero_f64:
169; CHECK-NEXT: .functype zero_f64 () -> (f64){{$}}
170; CHECK-NEXT: f64.const $push[[NUM:[0-9]+]]=, 0x0p0{{$}}
171; CHECK-NEXT: return $pop[[NUM]]{{$}}
172define double @zero_f64() {
173  ret double 0.0
174}
175
176; CHECK-LABEL: one_f64:
177; CHECK-NEXT: .functype one_f64 () -> (f64){{$}}
178; CHECK-NEXT: f64.const $push[[NUM:[0-9]+]]=, 0x1p0{{$}}
179; CHECK-NEXT: return $pop[[NUM]]{{$}}
180define double @one_f64() {
181  ret double 1.0
182}
183
184; CHECK-LABEL: two_f64:
185; CHECK-NEXT: .functype two_f64 () -> (f64){{$}}
186; CHECK-NEXT: f64.const $push[[NUM:[0-9]+]]=, 0x1p1{{$}}
187; CHECK-NEXT: return $pop[[NUM]]{{$}}
188define double @two_f64() {
189  ret double 2.0
190}
191
192; CHECK-LABEL: nan_f64:
193; CHECK-NEXT: .functype nan_f64 () -> (f64){{$}}
194; CHECK-NEXT: f64.const $push[[NUM:[0-9]+]]=, nan{{$}}
195; CHECK-NEXT: return $pop[[NUM]]{{$}}
196define double @nan_f64() {
197  ret double 0x7FF8000000000000
198}
199
200; CHECK-LABEL: negnan_f64:
201; CHECK-NEXT: .functype negnan_f64 () -> (f64){{$}}
202; CHECK-NEXT: f64.const $push[[NUM:[0-9]+]]=, -nan{{$}}
203; CHECK-NEXT: return $pop[[NUM]]{{$}}
204define double @negnan_f64() {
205  ret double 0xFFF8000000000000
206}
207
208; CHECK-LABEL: inf_f64:
209; CHECK-NEXT: .functype inf_f64 () -> (f64){{$}}
210; CHECK-NEXT: f64.const $push[[NUM:[0-9]+]]=, infinity{{$}}
211; CHECK-NEXT: return $pop[[NUM]]{{$}}
212define double @inf_f64() {
213  ret double 0x7FF0000000000000
214}
215
216; CHECK-LABEL: neginf_f64:
217; CHECK-NEXT: .functype neginf_f64 () -> (f64){{$}}
218; CHECK-NEXT: f64.const $push[[NUM:[0-9]+]]=, -infinity{{$}}
219; CHECK-NEXT: return $pop[[NUM]]{{$}}
220define double @neginf_f64() {
221  ret double 0xFFF0000000000000
222}
223
224;; Custom NaN playloads are currently not always preserved because of the use of
225;; native doubles in the MC layer. TODO: fix this problem or decide we don't
226;; care about preserving NaN payloads.
227
228; XXX-CHECK-LABEL: custom_nan_f64:
229; XXX-CHECK-NEXT: .functype custom_nan_f64 () -> (f64){{$}}
230; XXX-CHECK-NEXT: f64.const $push[[NUM:[0-9]+]]=, -nan:0xabcdef0123456{{$}}
231; XXX-CHECK-NEXT: return $pop[[NUM]]{{$}}
232; define double @custom_nan_f64() {
233;   ret double 0xFFFABCDEF0123456
234; }
235
236; XXX-CHECK-LABEL: custom_nans_f64:
237; XXX-CHECK-NEXT: .functype custom_nans_f64 () -> (f64){{$}}
238; XXX-CHECK-NEXT: f64.const $push[[NUM:[0-9]+]]=, -nan:0x2bcdef0123456{{$}}
239; XXX-CHECK-NEXT: return $pop[[NUM]]{{$}}
240; define double @custom_nans_f64() {
241;   ret double 0xFFF2BCDEF0123456
242; }
243