xref: /llvm-project/llvm/test/Transforms/Float2Int/basic.ll (revision 7b3e943dfc6355488a57a7feaa125f4879ba7537)
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt < %s -passes='float2int' -S | FileCheck %s -check-prefixes=CHECK,NONE
3; RUN: opt < %s -passes='float2int' -S --data-layout="n64" | FileCheck %s -check-prefixes=CHECK,ONLY64
4; RUN: opt < %s -passes='float2int' -S --data-layout="n8:16:32:64"| FileCheck %s -check-prefixes=CHECK,MULTIPLE
5; RUN: opt < %s -passes=float2int -S --data-layout="e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"| FileCheck %s -check-prefixes=CHECK,PR-79158
6
7;
8; Positive tests
9;
10
11define i16 @simple1(i8 %a) {
12; NONE-LABEL: @simple1(
13; NONE-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i32
14; NONE-NEXT:    [[T21:%.*]] = add i32 [[TMP1]], 1
15; NONE-NEXT:    [[TMP2:%.*]] = trunc i32 [[T21]] to i16
16; NONE-NEXT:    ret i16 [[TMP2]]
17;
18; ONLY64-LABEL: @simple1(
19; ONLY64-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i64
20; ONLY64-NEXT:    [[T21:%.*]] = add i64 [[TMP1]], 1
21; ONLY64-NEXT:    [[TMP2:%.*]] = trunc i64 [[T21]] to i16
22; ONLY64-NEXT:    ret i16 [[TMP2]]
23;
24; MULTIPLE-LABEL: @simple1(
25; MULTIPLE-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i16
26; MULTIPLE-NEXT:    [[T21:%.*]] = add i16 [[TMP1]], 1
27; MULTIPLE-NEXT:    ret i16 [[T21]]
28;
29; PR-79158-LABEL: @simple1(
30; PR-79158-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i16
31; PR-79158-NEXT:    [[T21:%.*]] = add i16 [[TMP1]], 1
32; PR-79158-NEXT:    ret i16 [[T21]]
33;
34  %t1 = uitofp i8 %a to float
35  %t2 = fadd float %t1, 1.0
36  %t3 = fptoui float %t2 to i16
37  ret i16 %t3
38}
39
40define i8 @simple2(i8 %a) {
41; NONE-LABEL: @simple2(
42; NONE-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i32
43; NONE-NEXT:    [[T21:%.*]] = sub i32 [[TMP1]], 1
44; NONE-NEXT:    [[TMP2:%.*]] = trunc i32 [[T21]] to i8
45; NONE-NEXT:    ret i8 [[TMP2]]
46;
47; ONLY64-LABEL: @simple2(
48; ONLY64-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i64
49; ONLY64-NEXT:    [[T21:%.*]] = sub i64 [[TMP1]], 1
50; ONLY64-NEXT:    [[TMP2:%.*]] = trunc i64 [[T21]] to i8
51; ONLY64-NEXT:    ret i8 [[TMP2]]
52;
53; MULTIPLE-LABEL: @simple2(
54; MULTIPLE-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i16
55; MULTIPLE-NEXT:    [[T21:%.*]] = sub i16 [[TMP1]], 1
56; MULTIPLE-NEXT:    [[TMP2:%.*]] = trunc i16 [[T21]] to i8
57; MULTIPLE-NEXT:    ret i8 [[TMP2]]
58;
59; PR-79158-LABEL: @simple2(
60; PR-79158-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i16
61; PR-79158-NEXT:    [[T21:%.*]] = sub i16 [[TMP1]], 1
62; PR-79158-NEXT:    [[TMP2:%.*]] = trunc i16 [[T21]] to i8
63; PR-79158-NEXT:    ret i8 [[TMP2]]
64;
65  %t1 = uitofp i8 %a to float
66  %t2 = fsub float %t1, 1.0
67  %t3 = fptoui float %t2 to i8
68  ret i8 %t3
69}
70
71define i32 @simple3(i8 %a) {
72; NONE-LABEL: @simple3(
73; NONE-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i32
74; NONE-NEXT:    [[T21:%.*]] = sub i32 [[TMP1]], 1
75; NONE-NEXT:    ret i32 [[T21]]
76;
77; ONLY64-LABEL: @simple3(
78; ONLY64-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i64
79; ONLY64-NEXT:    [[T21:%.*]] = sub i64 [[TMP1]], 1
80; ONLY64-NEXT:    [[TMP2:%.*]] = trunc i64 [[T21]] to i32
81; ONLY64-NEXT:    ret i32 [[TMP2]]
82;
83; MULTIPLE-LABEL: @simple3(
84; MULTIPLE-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i16
85; MULTIPLE-NEXT:    [[T21:%.*]] = sub i16 [[TMP1]], 1
86; MULTIPLE-NEXT:    [[TMP2:%.*]] = zext i16 [[T21]] to i32
87; MULTIPLE-NEXT:    ret i32 [[TMP2]]
88;
89; PR-79158-LABEL: @simple3(
90; PR-79158-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i16
91; PR-79158-NEXT:    [[T21:%.*]] = sub i16 [[TMP1]], 1
92; PR-79158-NEXT:    [[TMP2:%.*]] = zext i16 [[T21]] to i32
93; PR-79158-NEXT:    ret i32 [[TMP2]]
94;
95  %t1 = uitofp i8 %a to float
96  %t2 = fsub float %t1, 1.0
97  %t3 = fptoui float %t2 to i32
98  ret i32 %t3
99}
100
101define i1 @cmp(i8 %a, i8 %b) {
102; NONE-LABEL: @cmp(
103; NONE-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i32
104; NONE-NEXT:    [[TMP2:%.*]] = zext i8 [[B:%.*]] to i32
105; NONE-NEXT:    [[T31:%.*]] = icmp slt i32 [[TMP1]], [[TMP2]]
106; NONE-NEXT:    ret i1 [[T31]]
107;
108; ONLY64-LABEL: @cmp(
109; ONLY64-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i64
110; ONLY64-NEXT:    [[TMP2:%.*]] = zext i8 [[B:%.*]] to i64
111; ONLY64-NEXT:    [[T31:%.*]] = icmp slt i64 [[TMP1]], [[TMP2]]
112; ONLY64-NEXT:    ret i1 [[T31]]
113;
114; MULTIPLE-LABEL: @cmp(
115; MULTIPLE-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i16
116; MULTIPLE-NEXT:    [[TMP2:%.*]] = zext i8 [[B:%.*]] to i16
117; MULTIPLE-NEXT:    [[T31:%.*]] = icmp slt i16 [[TMP1]], [[TMP2]]
118; MULTIPLE-NEXT:    ret i1 [[T31]]
119;
120; PR-79158-LABEL: @cmp(
121; PR-79158-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i16
122; PR-79158-NEXT:    [[TMP2:%.*]] = zext i8 [[B:%.*]] to i16
123; PR-79158-NEXT:    [[T31:%.*]] = icmp slt i16 [[TMP1]], [[TMP2]]
124; PR-79158-NEXT:    ret i1 [[T31]]
125;
126  %t1 = uitofp i8 %a to float
127  %t2 = uitofp i8 %b to float
128  %t3 = fcmp ult float %t1, %t2
129  ret i1 %t3
130}
131
132define i32 @simple4(i32 %a) {
133; CHECK-LABEL: @simple4(
134; CHECK-NEXT:    [[TMP1:%.*]] = zext i32 [[A:%.*]] to i64
135; CHECK-NEXT:    [[T21:%.*]] = add i64 [[TMP1]], 1
136; CHECK-NEXT:    [[TMP2:%.*]] = trunc i64 [[T21]] to i32
137; CHECK-NEXT:    ret i32 [[TMP2]]
138;
139  %t1 = uitofp i32 %a to double
140  %t2 = fadd double %t1, 1.0
141  %t3 = fptoui double %t2 to i32
142  ret i32 %t3
143}
144
145define i32 @simple5(i8 %a, i8 %b) {
146; NONE-LABEL: @simple5(
147; NONE-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i32
148; NONE-NEXT:    [[TMP2:%.*]] = zext i8 [[B:%.*]] to i32
149; NONE-NEXT:    [[T31:%.*]] = add i32 [[TMP1]], 1
150; NONE-NEXT:    [[T42:%.*]] = mul i32 [[T31]], [[TMP2]]
151; NONE-NEXT:    ret i32 [[T42]]
152;
153; ONLY64-LABEL: @simple5(
154; ONLY64-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i64
155; ONLY64-NEXT:    [[TMP2:%.*]] = zext i8 [[B:%.*]] to i64
156; ONLY64-NEXT:    [[T31:%.*]] = add i64 [[TMP1]], 1
157; ONLY64-NEXT:    [[T42:%.*]] = mul i64 [[T31]], [[TMP2]]
158; ONLY64-NEXT:    [[TMP3:%.*]] = trunc i64 [[T42]] to i32
159; ONLY64-NEXT:    ret i32 [[TMP3]]
160;
161; MULTIPLE-LABEL: @simple5(
162; MULTIPLE-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i32
163; MULTIPLE-NEXT:    [[TMP2:%.*]] = zext i8 [[B:%.*]] to i32
164; MULTIPLE-NEXT:    [[T31:%.*]] = add i32 [[TMP1]], 1
165; MULTIPLE-NEXT:    [[T42:%.*]] = mul i32 [[T31]], [[TMP2]]
166; MULTIPLE-NEXT:    ret i32 [[T42]]
167;
168; PR-79158-LABEL: @simple5(
169; PR-79158-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i32
170; PR-79158-NEXT:    [[TMP2:%.*]] = zext i8 [[B:%.*]] to i32
171; PR-79158-NEXT:    [[T31:%.*]] = add i32 [[TMP1]], 1
172; PR-79158-NEXT:    [[T42:%.*]] = mul i32 [[T31]], [[TMP2]]
173; PR-79158-NEXT:    ret i32 [[T42]]
174;
175  %t1 = uitofp i8 %a to float
176  %t2 = uitofp i8 %b to float
177  %t3 = fadd float %t1, 1.0
178  %t4 = fmul float %t3, %t2
179  %t5 = fptoui float %t4 to i32
180  ret i32 %t5
181}
182
183define i32 @simple6(i8 %a, i8 %b) {
184; NONE-LABEL: @simple6(
185; NONE-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i32
186; NONE-NEXT:    [[TMP2:%.*]] = zext i8 [[B:%.*]] to i32
187; NONE-NEXT:    [[T31:%.*]] = sub i32 0, [[TMP1]]
188; NONE-NEXT:    [[T42:%.*]] = mul i32 [[T31]], [[TMP2]]
189; NONE-NEXT:    ret i32 [[T42]]
190;
191; ONLY64-LABEL: @simple6(
192; ONLY64-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i64
193; ONLY64-NEXT:    [[TMP2:%.*]] = zext i8 [[B:%.*]] to i64
194; ONLY64-NEXT:    [[T31:%.*]] = sub i64 0, [[TMP1]]
195; ONLY64-NEXT:    [[T42:%.*]] = mul i64 [[T31]], [[TMP2]]
196; ONLY64-NEXT:    [[TMP3:%.*]] = trunc i64 [[T42]] to i32
197; ONLY64-NEXT:    ret i32 [[TMP3]]
198;
199; MULTIPLE-LABEL: @simple6(
200; MULTIPLE-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i32
201; MULTIPLE-NEXT:    [[TMP2:%.*]] = zext i8 [[B:%.*]] to i32
202; MULTIPLE-NEXT:    [[T31:%.*]] = sub i32 0, [[TMP1]]
203; MULTIPLE-NEXT:    [[T42:%.*]] = mul i32 [[T31]], [[TMP2]]
204; MULTIPLE-NEXT:    ret i32 [[T42]]
205;
206; PR-79158-LABEL: @simple6(
207; PR-79158-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i32
208; PR-79158-NEXT:    [[TMP2:%.*]] = zext i8 [[B:%.*]] to i32
209; PR-79158-NEXT:    [[T31:%.*]] = sub i32 0, [[TMP1]]
210; PR-79158-NEXT:    [[T42:%.*]] = mul i32 [[T31]], [[TMP2]]
211; PR-79158-NEXT:    ret i32 [[T42]]
212;
213  %t1 = uitofp i8 %a to float
214  %t2 = uitofp i8 %b to float
215  %t3 = fneg float %t1
216  %t4 = fmul float %t3, %t2
217  %t5 = fptoui float %t4 to i32
218  ret i32 %t5
219}
220
221; The two chains don't interact - failure of one shouldn't
222; cause failure of the other.
223
224define i32 @multi1(i8 %a, i8 %b, i8 %c, float %d) {
225; NONE-LABEL: @multi1(
226; NONE-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i32
227; NONE-NEXT:    [[TMP2:%.*]] = zext i8 [[B:%.*]] to i32
228; NONE-NEXT:    [[FC:%.*]] = uitofp i8 [[C:%.*]] to float
229; NONE-NEXT:    [[X1:%.*]] = add i32 [[TMP1]], [[TMP2]]
230; NONE-NEXT:    [[Z:%.*]] = fadd float [[FC]], [[D:%.*]]
231; NONE-NEXT:    [[W:%.*]] = fptoui float [[Z]] to i32
232; NONE-NEXT:    [[R:%.*]] = add i32 [[X1]], [[W]]
233; NONE-NEXT:    ret i32 [[R]]
234;
235; ONLY64-LABEL: @multi1(
236; ONLY64-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i64
237; ONLY64-NEXT:    [[TMP2:%.*]] = zext i8 [[B:%.*]] to i64
238; ONLY64-NEXT:    [[FC:%.*]] = uitofp i8 [[C:%.*]] to float
239; ONLY64-NEXT:    [[X1:%.*]] = add i64 [[TMP1]], [[TMP2]]
240; ONLY64-NEXT:    [[TMP3:%.*]] = trunc i64 [[X1]] to i32
241; ONLY64-NEXT:    [[Z:%.*]] = fadd float [[FC]], [[D:%.*]]
242; ONLY64-NEXT:    [[W:%.*]] = fptoui float [[Z]] to i32
243; ONLY64-NEXT:    [[R:%.*]] = add i32 [[TMP3]], [[W]]
244; ONLY64-NEXT:    ret i32 [[R]]
245;
246; MULTIPLE-LABEL: @multi1(
247; MULTIPLE-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i16
248; MULTIPLE-NEXT:    [[TMP2:%.*]] = zext i8 [[B:%.*]] to i16
249; MULTIPLE-NEXT:    [[FC:%.*]] = uitofp i8 [[C:%.*]] to float
250; MULTIPLE-NEXT:    [[X1:%.*]] = add i16 [[TMP1]], [[TMP2]]
251; MULTIPLE-NEXT:    [[TMP3:%.*]] = zext i16 [[X1]] to i32
252; MULTIPLE-NEXT:    [[Z:%.*]] = fadd float [[FC]], [[D:%.*]]
253; MULTIPLE-NEXT:    [[W:%.*]] = fptoui float [[Z]] to i32
254; MULTIPLE-NEXT:    [[R:%.*]] = add i32 [[TMP3]], [[W]]
255; MULTIPLE-NEXT:    ret i32 [[R]]
256;
257; PR-79158-LABEL: @multi1(
258; PR-79158-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i16
259; PR-79158-NEXT:    [[TMP2:%.*]] = zext i8 [[B:%.*]] to i16
260; PR-79158-NEXT:    [[FC:%.*]] = uitofp i8 [[C:%.*]] to float
261; PR-79158-NEXT:    [[X1:%.*]] = add i16 [[TMP1]], [[TMP2]]
262; PR-79158-NEXT:    [[TMP3:%.*]] = zext i16 [[X1]] to i32
263; PR-79158-NEXT:    [[Z:%.*]] = fadd float [[FC]], [[D:%.*]]
264; PR-79158-NEXT:    [[W:%.*]] = fptoui float [[Z]] to i32
265; PR-79158-NEXT:    [[R:%.*]] = add i32 [[TMP3]], [[W]]
266; PR-79158-NEXT:    ret i32 [[R]]
267;
268  %fa = uitofp i8 %a to float
269  %fb = uitofp i8 %b to float
270  %fc = uitofp i8 %c to float
271  %x = fadd float %fa, %fb
272  %y = fptoui float %x to i32
273  %z = fadd float %fc, %d
274  %w = fptoui float %z to i32
275  %r = add i32 %y, %w
276  ret i32 %r
277}
278
279define i16 @simple_negzero(i8 %a) {
280; NONE-LABEL: @simple_negzero(
281; NONE-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i32
282; NONE-NEXT:    [[T21:%.*]] = add i32 [[TMP1]], 0
283; NONE-NEXT:    [[TMP2:%.*]] = trunc i32 [[T21]] to i16
284; NONE-NEXT:    ret i16 [[TMP2]]
285;
286; ONLY64-LABEL: @simple_negzero(
287; ONLY64-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i64
288; ONLY64-NEXT:    [[T21:%.*]] = add i64 [[TMP1]], 0
289; ONLY64-NEXT:    [[TMP2:%.*]] = trunc i64 [[T21]] to i16
290; ONLY64-NEXT:    ret i16 [[TMP2]]
291;
292; MULTIPLE-LABEL: @simple_negzero(
293; MULTIPLE-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i16
294; MULTIPLE-NEXT:    [[T21:%.*]] = add i16 [[TMP1]], 0
295; MULTIPLE-NEXT:    ret i16 [[T21]]
296;
297; PR-79158-LABEL: @simple_negzero(
298; PR-79158-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i16
299; PR-79158-NEXT:    [[T21:%.*]] = add i16 [[TMP1]], 0
300; PR-79158-NEXT:    ret i16 [[T21]]
301;
302  %t1 = uitofp i8 %a to float
303  %t2 = fadd fast float %t1, -0.0
304  %t3 = fptoui float %t2 to i16
305  ret i16 %t3
306}
307
308define i32 @simple_negative(i8 %call) {
309; NONE-LABEL: @simple_negative(
310; NONE-NEXT:    [[TMP1:%.*]] = sext i8 [[CALL:%.*]] to i32
311; NONE-NEXT:    [[MUL1:%.*]] = mul i32 [[TMP1]], -3
312; NONE-NEXT:    [[TMP2:%.*]] = trunc i32 [[MUL1]] to i8
313; NONE-NEXT:    [[CONV3:%.*]] = sext i8 [[TMP2]] to i32
314; NONE-NEXT:    ret i32 [[CONV3]]
315;
316; ONLY64-LABEL: @simple_negative(
317; ONLY64-NEXT:    [[TMP1:%.*]] = sext i8 [[CALL:%.*]] to i64
318; ONLY64-NEXT:    [[MUL1:%.*]] = mul i64 [[TMP1]], -3
319; ONLY64-NEXT:    [[TMP2:%.*]] = trunc i64 [[MUL1]] to i8
320; ONLY64-NEXT:    [[CONV3:%.*]] = sext i8 [[TMP2]] to i32
321; ONLY64-NEXT:    ret i32 [[CONV3]]
322;
323; MULTIPLE-LABEL: @simple_negative(
324; MULTIPLE-NEXT:    [[TMP1:%.*]] = sext i8 [[CALL:%.*]] to i16
325; MULTIPLE-NEXT:    [[MUL1:%.*]] = mul i16 [[TMP1]], -3
326; MULTIPLE-NEXT:    [[TMP2:%.*]] = trunc i16 [[MUL1]] to i8
327; MULTIPLE-NEXT:    [[CONV3:%.*]] = sext i8 [[TMP2]] to i32
328; MULTIPLE-NEXT:    ret i32 [[CONV3]]
329;
330; PR-79158-LABEL: @simple_negative(
331; PR-79158-NEXT:    [[TMP1:%.*]] = sext i8 [[CALL:%.*]] to i16
332; PR-79158-NEXT:    [[MUL1:%.*]] = mul i16 [[TMP1]], -3
333; PR-79158-NEXT:    [[TMP2:%.*]] = trunc i16 [[MUL1]] to i8
334; PR-79158-NEXT:    [[CONV3:%.*]] = sext i8 [[TMP2]] to i32
335; PR-79158-NEXT:    ret i32 [[CONV3]]
336;
337  %conv1 = sitofp i8 %call to float
338  %mul = fmul float %conv1, -3.000000e+00
339  %conv2 = fptosi float %mul to i8
340  %conv3 = sext i8 %conv2 to i32
341  ret i32 %conv3
342}
343
344define i16 @simple_fneg(i8 %a) {
345; NONE-LABEL: @simple_fneg(
346; NONE-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i32
347; NONE-NEXT:    [[T21:%.*]] = sub i32 0, [[TMP1]]
348; NONE-NEXT:    [[TMP2:%.*]] = trunc i32 [[T21]] to i16
349; NONE-NEXT:    ret i16 [[TMP2]]
350;
351; ONLY64-LABEL: @simple_fneg(
352; ONLY64-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i64
353; ONLY64-NEXT:    [[T21:%.*]] = sub i64 0, [[TMP1]]
354; ONLY64-NEXT:    [[TMP2:%.*]] = trunc i64 [[T21]] to i16
355; ONLY64-NEXT:    ret i16 [[TMP2]]
356;
357; MULTIPLE-LABEL: @simple_fneg(
358; MULTIPLE-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i16
359; MULTIPLE-NEXT:    [[T21:%.*]] = sub i16 0, [[TMP1]]
360; MULTIPLE-NEXT:    ret i16 [[T21]]
361;
362; PR-79158-LABEL: @simple_fneg(
363; PR-79158-NEXT:    [[TMP1:%.*]] = zext i8 [[A:%.*]] to i16
364; PR-79158-NEXT:    [[T21:%.*]] = sub i16 0, [[TMP1]]
365; PR-79158-NEXT:    ret i16 [[T21]]
366;
367  %t1 = uitofp i8 %a to float
368  %t2 = fneg fast float %t1
369  %t3 = fptoui float %t2 to i16
370  ret i16 %t3
371}
372
373;
374; Negative tests
375;
376
377; The two chains intersect, which means because one fails, no
378; transform can occur.
379
380define i32 @neg_multi1(i8 %a, i8 %b, i8 %c, float %d) {
381; CHECK-LABEL: @neg_multi1(
382; CHECK-NEXT:    [[FA:%.*]] = uitofp i8 [[A:%.*]] to float
383; CHECK-NEXT:    [[FC:%.*]] = uitofp i8 [[C:%.*]] to float
384; CHECK-NEXT:    [[X:%.*]] = fadd float [[FA]], [[FC]]
385; CHECK-NEXT:    [[Y:%.*]] = fptoui float [[X]] to i32
386; CHECK-NEXT:    [[Z:%.*]] = fadd float [[FC]], [[D:%.*]]
387; CHECK-NEXT:    [[W:%.*]] = fptoui float [[Z]] to i32
388; CHECK-NEXT:    [[R:%.*]] = add i32 [[Y]], [[W]]
389; CHECK-NEXT:    ret i32 [[R]]
390;
391  %fa = uitofp i8 %a to float
392  %fc = uitofp i8 %c to float
393  %x = fadd float %fa, %fc
394  %y = fptoui float %x to i32
395  %z = fadd float %fc, %d
396  %w = fptoui float %z to i32
397  %r = add i32 %y, %w
398  ret i32 %r
399}
400
401; The i32 * i32 = i64, which has 64 bits, which is greater than the 52 bits
402; that can be exactly represented in a double.
403
404define i64 @neg_muld(i32 %a, i32 %b) {
405; CHECK-LABEL: @neg_muld(
406; CHECK-NEXT:    [[FA:%.*]] = uitofp i32 [[A:%.*]] to double
407; CHECK-NEXT:    [[FB:%.*]] = uitofp i32 [[B:%.*]] to double
408; CHECK-NEXT:    [[MUL:%.*]] = fmul double [[FA]], [[FB]]
409; CHECK-NEXT:    [[R:%.*]] = fptoui double [[MUL]] to i64
410; CHECK-NEXT:    ret i64 [[R]]
411;
412  %fa = uitofp i32 %a to double
413  %fb = uitofp i32 %b to double
414  %mul = fmul double %fa, %fb
415  %r = fptoui double %mul to i64
416  ret i64 %r
417}
418
419; The i16 * i16 = i32, which can't be represented in a float, but can in a
420; double. This should fail, as the written code uses floats, not doubles so
421; the original result may be inaccurate.
422
423define i32 @neg_mulf(i16 %a, i16 %b) {
424; CHECK-LABEL: @neg_mulf(
425; CHECK-NEXT:    [[FA:%.*]] = uitofp i16 [[A:%.*]] to float
426; CHECK-NEXT:    [[FB:%.*]] = uitofp i16 [[B:%.*]] to float
427; CHECK-NEXT:    [[MUL:%.*]] = fmul float [[FA]], [[FB]]
428; CHECK-NEXT:    [[R:%.*]] = fptoui float [[MUL]] to i32
429; CHECK-NEXT:    ret i32 [[R]]
430;
431  %fa = uitofp i16 %a to float
432  %fb = uitofp i16 %b to float
433  %mul = fmul float %fa, %fb
434  %r = fptoui float %mul to i32
435  ret i32 %r
436}
437
438; "false" doesn't have an icmp equivalent.
439
440define i1 @neg_cmp(i8 %a, i8 %b) {
441; CHECK-LABEL: @neg_cmp(
442; CHECK-NEXT:    [[T1:%.*]] = uitofp i8 [[A:%.*]] to float
443; CHECK-NEXT:    [[T2:%.*]] = uitofp i8 [[B:%.*]] to float
444; CHECK-NEXT:    [[T3:%.*]] = fcmp false float [[T1]], [[T2]]
445; CHECK-NEXT:    ret i1 [[T3]]
446;
447  %t1 = uitofp i8 %a to float
448  %t2 = uitofp i8 %b to float
449  %t3 = fcmp false float %t1, %t2
450  ret i1 %t3
451}
452
453; Division isn't a supported operator.
454
455define i16 @neg_div(i8 %a) {
456; CHECK-LABEL: @neg_div(
457; CHECK-NEXT:    [[T1:%.*]] = uitofp i8 [[A:%.*]] to float
458; CHECK-NEXT:    [[T2:%.*]] = fdiv float [[T1]], 1.000000e+00
459; CHECK-NEXT:    [[T3:%.*]] = fptoui float [[T2]] to i16
460; CHECK-NEXT:    ret i16 [[T3]]
461;
462  %t1 = uitofp i8 %a to float
463  %t2 = fdiv float %t1, 1.0
464  %t3 = fptoui float %t2 to i16
465  ret i16 %t3
466}
467
468; 1.2 is not an integer.
469
470define i16 @neg_remainder(i8 %a) {
471; CHECK-LABEL: @neg_remainder(
472; CHECK-NEXT:    [[T1:%.*]] = uitofp i8 [[A:%.*]] to float
473; CHECK-NEXT:    [[T2:%.*]] = fadd float [[T1]], 1.250000e+00
474; CHECK-NEXT:    [[T3:%.*]] = fptoui float [[T2]] to i16
475; CHECK-NEXT:    ret i16 [[T3]]
476;
477  %t1 = uitofp i8 %a to float
478  %t2 = fadd float %t1, 1.25
479  %t3 = fptoui float %t2 to i16
480  ret i16 %t3
481}
482
483; i80 > i64, which is the largest bitwidth handleable by default.
484
485define i80 @neg_toolarge(i80 %a) {
486; CHECK-LABEL: @neg_toolarge(
487; CHECK-NEXT:    [[T1:%.*]] = uitofp i80 [[A:%.*]] to fp128
488; CHECK-NEXT:    [[T2:%.*]] = fadd fp128 [[T1]], [[T1]]
489; CHECK-NEXT:    [[T3:%.*]] = fptoui fp128 [[T2]] to i80
490; CHECK-NEXT:    ret i80 [[T3]]
491;
492  %t1 = uitofp i80 %a to fp128
493  %t2 = fadd fp128 %t1, %t1
494  %t3 = fptoui fp128 %t2 to i80
495  ret i80 %t3
496}
497
498; The sequence %t1..%t3 cannot be converted because %t4 uses %t2.
499
500define i32 @neg_calluser(i32 %value) {
501; CHECK-LABEL: @neg_calluser(
502; CHECK-NEXT:    [[T1:%.*]] = sitofp i32 [[VALUE:%.*]] to double
503; CHECK-NEXT:    [[T2:%.*]] = fadd double [[T1]], 1.000000e+00
504; CHECK-NEXT:    [[T3:%.*]] = fcmp olt double [[T2]], 0.000000e+00
505; CHECK-NEXT:    [[T4:%.*]] = tail call double @g(double [[T2]])
506; CHECK-NEXT:    [[T5:%.*]] = fptosi double [[T4]] to i32
507; CHECK-NEXT:    [[T6:%.*]] = zext i1 [[T3]] to i32
508; CHECK-NEXT:    [[T7:%.*]] = add i32 [[T6]], [[T5]]
509; CHECK-NEXT:    ret i32 [[T7]]
510;
511  %t1 = sitofp i32 %value to double
512  %t2 = fadd double %t1, 1.0
513  %t3 = fcmp olt double %t2, 0.000000e+00
514  %t4 = tail call double @g(double %t2)
515  %t5 = fptosi double %t4 to i32
516  %t6 = zext i1 %t3 to i32
517  %t7 = add i32 %t6, %t5
518  ret i32 %t7
519}
520
521declare double @g(double)
522
523define <4 x i16> @neg_vector(<4 x i8> %a) {
524; CHECK-LABEL: @neg_vector(
525; CHECK-NEXT:    [[T1:%.*]] = uitofp <4 x i8> [[A:%.*]] to <4 x float>
526; CHECK-NEXT:    [[T2:%.*]] = fptoui <4 x float> [[T1]] to <4 x i16>
527; CHECK-NEXT:    ret <4 x i16> [[T2]]
528;
529  %t1 = uitofp <4 x i8> %a to <4 x float>
530  %t2 = fptoui <4 x float> %t1 to <4 x i16>
531  ret <4 x i16> %t2
532}
533
534; Don't crash while processing unreachable (non-standard) IR.
535
536define void @PR38502() {
537; CHECK-LABEL: @PR38502(
538; CHECK-NEXT:  entry:
539; CHECK-NEXT:    ret void
540; CHECK:       bogusBB:
541; CHECK-NEXT:    [[INC1:%.*]] = fadd double [[INC:%.*]], 1.000000e+00
542; CHECK-NEXT:    [[INC]] = fadd double [[INC1]], 1.000000e+00
543; CHECK-NEXT:    [[TOBOOL:%.*]] = fcmp une double [[INC]], 0.000000e+00
544; CHECK-NEXT:    br label [[BOGUSBB:%.*]]
545;
546entry:
547  ret void
548
549bogusBB:                                          ; preds = %bogusBB
550  %inc1 = fadd double %inc, 1.000000e+00
551  %inc = fadd double %inc1, 1.000000e+00
552  %tobool = fcmp une double %inc, 0.000000e+00
553  br label %bogusBB
554}
555