xref: /llvm-project/llvm/test/Transforms/LoopVectorize/RISCV/bf16.ll (revision b2e2d8b3f6bb7c647c1e4cfe6d2765e1b0a15497) 
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
2; RUN: opt < %s -passes=loop-vectorize -mtriple riscv64 -mattr=+v -S | FileCheck %s -check-prefix=NO-ZVFBFMIN
3; RUN: opt < %s -passes=loop-vectorize -mtriple riscv64 -mattr=+v,+zvfbfmin -S | FileCheck %s -check-prefix=ZVFBFMIN
4
5define void @fadd(ptr noalias %a, ptr noalias %b, i64 %n) {
6; NO-ZVFBFMIN-LABEL: define void @fadd(
7; NO-ZVFBFMIN-SAME: ptr noalias [[A:%.*]], ptr noalias [[B:%.*]], i64 [[N:%.*]]) #[[ATTR0:[0-9]+]] {
8; NO-ZVFBFMIN-NEXT:  [[ENTRY:.*]]:
9; NO-ZVFBFMIN-NEXT:    br label %[[LOOP:.*]]
10; NO-ZVFBFMIN:       [[LOOP]]:
11; NO-ZVFBFMIN-NEXT:    [[I:%.*]] = phi i64 [ 0, %[[ENTRY]] ], [ [[I_NEXT:%.*]], %[[LOOP]] ]
12; NO-ZVFBFMIN-NEXT:    [[A_GEP:%.*]] = getelementptr bfloat, ptr [[A]], i64 [[I]]
13; NO-ZVFBFMIN-NEXT:    [[B_GEP:%.*]] = getelementptr bfloat, ptr [[B]], i64 [[I]]
14; NO-ZVFBFMIN-NEXT:    [[X:%.*]] = load bfloat, ptr [[A_GEP]], align 2
15; NO-ZVFBFMIN-NEXT:    [[Y:%.*]] = load bfloat, ptr [[B_GEP]], align 2
16; NO-ZVFBFMIN-NEXT:    [[Z:%.*]] = fadd bfloat [[X]], [[Y]]
17; NO-ZVFBFMIN-NEXT:    store bfloat [[Z]], ptr [[A_GEP]], align 2
18; NO-ZVFBFMIN-NEXT:    [[I_NEXT]] = add i64 [[I]], 1
19; NO-ZVFBFMIN-NEXT:    [[DONE:%.*]] = icmp eq i64 [[I_NEXT]], [[N]]
20; NO-ZVFBFMIN-NEXT:    br i1 [[DONE]], label %[[EXIT:.*]], label %[[LOOP]]
21; NO-ZVFBFMIN:       [[EXIT]]:
22; NO-ZVFBFMIN-NEXT:    ret void
23;
24; ZVFBFMIN-LABEL: define void @fadd(
25; ZVFBFMIN-SAME: ptr noalias [[A:%.*]], ptr noalias [[B:%.*]], i64 [[N:%.*]]) #[[ATTR0:[0-9]+]] {
26; ZVFBFMIN-NEXT:  [[ENTRY:.*]]:
27; ZVFBFMIN-NEXT:    [[TMP7:%.*]] = call i64 @llvm.vscale.i64()
28; ZVFBFMIN-NEXT:    [[TMP8:%.*]] = mul i64 [[TMP7]], 8
29; ZVFBFMIN-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N]], [[TMP8]]
30; ZVFBFMIN-NEXT:    br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
31; ZVFBFMIN:       [[VECTOR_PH]]:
32; ZVFBFMIN-NEXT:    [[TMP9:%.*]] = call i64 @llvm.vscale.i64()
33; ZVFBFMIN-NEXT:    [[TMP10:%.*]] = mul i64 [[TMP9]], 8
34; ZVFBFMIN-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[N]], [[TMP10]]
35; ZVFBFMIN-NEXT:    [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]]
36; ZVFBFMIN-NEXT:    [[TMP12:%.*]] = call i64 @llvm.vscale.i64()
37; ZVFBFMIN-NEXT:    [[TMP5:%.*]] = mul i64 [[TMP12]], 8
38; ZVFBFMIN-NEXT:    br label %[[VECTOR_BODY:.*]]
39; ZVFBFMIN:       [[VECTOR_BODY]]:
40; ZVFBFMIN-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
41; ZVFBFMIN-NEXT:    [[TMP0:%.*]] = add i64 [[INDEX]], 0
42; ZVFBFMIN-NEXT:    [[TMP1:%.*]] = getelementptr bfloat, ptr [[A]], i64 [[TMP0]]
43; ZVFBFMIN-NEXT:    [[TMP2:%.*]] = getelementptr bfloat, ptr [[B]], i64 [[TMP0]]
44; ZVFBFMIN-NEXT:    [[TMP3:%.*]] = getelementptr bfloat, ptr [[TMP1]], i32 0
45; ZVFBFMIN-NEXT:    [[WIDE_LOAD:%.*]] = load <vscale x 8 x bfloat>, ptr [[TMP3]], align 2
46; ZVFBFMIN-NEXT:    [[TMP4:%.*]] = getelementptr bfloat, ptr [[TMP2]], i32 0
47; ZVFBFMIN-NEXT:    [[WIDE_LOAD1:%.*]] = load <vscale x 8 x bfloat>, ptr [[TMP4]], align 2
48; ZVFBFMIN-NEXT:    [[TMP11:%.*]] = fadd <vscale x 8 x bfloat> [[WIDE_LOAD]], [[WIDE_LOAD1]]
49; ZVFBFMIN-NEXT:    store <vscale x 8 x bfloat> [[TMP11]], ptr [[TMP3]], align 2
50; ZVFBFMIN-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
51; ZVFBFMIN-NEXT:    [[TMP6:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
52; ZVFBFMIN-NEXT:    br i1 [[TMP6]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
53; ZVFBFMIN:       [[MIDDLE_BLOCK]]:
54; ZVFBFMIN-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]]
55; ZVFBFMIN-NEXT:    br i1 [[CMP_N]], label %[[EXIT:.*]], label %[[SCALAR_PH]]
56; ZVFBFMIN:       [[SCALAR_PH]]:
57; ZVFBFMIN-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]
58; ZVFBFMIN-NEXT:    br label %[[LOOP:.*]]
59; ZVFBFMIN:       [[LOOP]]:
60; ZVFBFMIN-NEXT:    [[I:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[I_NEXT:%.*]], %[[LOOP]] ]
61; ZVFBFMIN-NEXT:    [[A_GEP:%.*]] = getelementptr bfloat, ptr [[A]], i64 [[I]]
62; ZVFBFMIN-NEXT:    [[B_GEP:%.*]] = getelementptr bfloat, ptr [[B]], i64 [[I]]
63; ZVFBFMIN-NEXT:    [[X:%.*]] = load bfloat, ptr [[A_GEP]], align 2
64; ZVFBFMIN-NEXT:    [[Y:%.*]] = load bfloat, ptr [[B_GEP]], align 2
65; ZVFBFMIN-NEXT:    [[Z:%.*]] = fadd bfloat [[X]], [[Y]]
66; ZVFBFMIN-NEXT:    store bfloat [[Z]], ptr [[A_GEP]], align 2
67; ZVFBFMIN-NEXT:    [[I_NEXT]] = add i64 [[I]], 1
68; ZVFBFMIN-NEXT:    [[DONE:%.*]] = icmp eq i64 [[I_NEXT]], [[N]]
69; ZVFBFMIN-NEXT:    br i1 [[DONE]], label %[[EXIT]], label %[[LOOP]], !llvm.loop [[LOOP3:![0-9]+]]
70; ZVFBFMIN:       [[EXIT]]:
71; ZVFBFMIN-NEXT:    ret void
72;
73entry:
74  br label %loop
75loop:
76  %i = phi i64 [0, %entry], [%i.next, %loop]
77  %a.gep = getelementptr bfloat, ptr %a, i64 %i
78  %b.gep = getelementptr bfloat, ptr %b, i64 %i
79  %x = load bfloat, ptr %a.gep
80  %y = load bfloat, ptr %b.gep
81  %z = fadd bfloat %x, %y
82  store bfloat %z, ptr %a.gep
83  %i.next = add i64 %i, 1
84  %done = icmp eq i64 %i.next, %n
85  br i1 %done, label %exit, label %loop
86exit:
87  ret void
88}
89
90define void @vfwmaccbf16.vv(ptr noalias %a, ptr noalias %b, ptr noalias %c, i64 %n) {
91; NO-ZVFBFMIN-LABEL: define void @vfwmaccbf16.vv(
92; NO-ZVFBFMIN-SAME: ptr noalias [[A:%.*]], ptr noalias [[B:%.*]], ptr noalias [[C:%.*]], i64 [[N:%.*]]) #[[ATTR0]] {
93; NO-ZVFBFMIN-NEXT:  [[ENTRY:.*]]:
94; NO-ZVFBFMIN-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N]], 8
95; NO-ZVFBFMIN-NEXT:    br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
96; NO-ZVFBFMIN:       [[VECTOR_PH]]:
97; NO-ZVFBFMIN-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[N]], 8
98; NO-ZVFBFMIN-NEXT:    [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]]
99; NO-ZVFBFMIN-NEXT:    br label %[[VECTOR_BODY:.*]]
100; NO-ZVFBFMIN:       [[VECTOR_BODY]]:
101; NO-ZVFBFMIN-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
102; NO-ZVFBFMIN-NEXT:    [[TMP0:%.*]] = add i64 [[INDEX]], 0
103; NO-ZVFBFMIN-NEXT:    [[TMP1:%.*]] = getelementptr bfloat, ptr [[A]], i64 [[TMP0]]
104; NO-ZVFBFMIN-NEXT:    [[TMP2:%.*]] = getelementptr bfloat, ptr [[B]], i64 [[TMP0]]
105; NO-ZVFBFMIN-NEXT:    [[TMP3:%.*]] = getelementptr float, ptr [[C]], i64 [[TMP0]]
106; NO-ZVFBFMIN-NEXT:    [[TMP4:%.*]] = getelementptr bfloat, ptr [[TMP1]], i32 0
107; NO-ZVFBFMIN-NEXT:    [[WIDE_LOAD:%.*]] = load <8 x bfloat>, ptr [[TMP4]], align 2
108; NO-ZVFBFMIN-NEXT:    [[TMP5:%.*]] = getelementptr bfloat, ptr [[TMP2]], i32 0
109; NO-ZVFBFMIN-NEXT:    [[WIDE_LOAD1:%.*]] = load <8 x bfloat>, ptr [[TMP5]], align 2
110; NO-ZVFBFMIN-NEXT:    [[TMP6:%.*]] = getelementptr float, ptr [[TMP3]], i32 0
111; NO-ZVFBFMIN-NEXT:    [[WIDE_LOAD2:%.*]] = load <8 x float>, ptr [[TMP6]], align 4
112; NO-ZVFBFMIN-NEXT:    [[TMP7:%.*]] = fpext <8 x bfloat> [[WIDE_LOAD]] to <8 x float>
113; NO-ZVFBFMIN-NEXT:    [[TMP8:%.*]] = fpext <8 x bfloat> [[WIDE_LOAD1]] to <8 x float>
114; NO-ZVFBFMIN-NEXT:    [[TMP9:%.*]] = call <8 x float> @llvm.fmuladd.v8f32(<8 x float> [[TMP7]], <8 x float> [[TMP8]], <8 x float> [[WIDE_LOAD2]])
115; NO-ZVFBFMIN-NEXT:    store <8 x float> [[TMP9]], ptr [[TMP6]], align 4
116; NO-ZVFBFMIN-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 8
117; NO-ZVFBFMIN-NEXT:    [[TMP10:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
118; NO-ZVFBFMIN-NEXT:    br i1 [[TMP10]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
119; NO-ZVFBFMIN:       [[MIDDLE_BLOCK]]:
120; NO-ZVFBFMIN-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]]
121; NO-ZVFBFMIN-NEXT:    br i1 [[CMP_N]], label %[[EXIT:.*]], label %[[SCALAR_PH]]
122; NO-ZVFBFMIN:       [[SCALAR_PH]]:
123; NO-ZVFBFMIN-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]
124; NO-ZVFBFMIN-NEXT:    br label %[[LOOP:.*]]
125; NO-ZVFBFMIN:       [[LOOP]]:
126; NO-ZVFBFMIN-NEXT:    [[I:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[I_NEXT:%.*]], %[[LOOP]] ]
127; NO-ZVFBFMIN-NEXT:    [[A_GEP:%.*]] = getelementptr bfloat, ptr [[A]], i64 [[I]]
128; NO-ZVFBFMIN-NEXT:    [[B_GEP:%.*]] = getelementptr bfloat, ptr [[B]], i64 [[I]]
129; NO-ZVFBFMIN-NEXT:    [[C_GEP:%.*]] = getelementptr float, ptr [[C]], i64 [[I]]
130; NO-ZVFBFMIN-NEXT:    [[X:%.*]] = load bfloat, ptr [[A_GEP]], align 2
131; NO-ZVFBFMIN-NEXT:    [[Y:%.*]] = load bfloat, ptr [[B_GEP]], align 2
132; NO-ZVFBFMIN-NEXT:    [[Z:%.*]] = load float, ptr [[C_GEP]], align 4
133; NO-ZVFBFMIN-NEXT:    [[X_EXT:%.*]] = fpext bfloat [[X]] to float
134; NO-ZVFBFMIN-NEXT:    [[Y_EXT:%.*]] = fpext bfloat [[Y]] to float
135; NO-ZVFBFMIN-NEXT:    [[FMULADD:%.*]] = call float @llvm.fmuladd.f32(float [[X_EXT]], float [[Y_EXT]], float [[Z]])
136; NO-ZVFBFMIN-NEXT:    store float [[FMULADD]], ptr [[C_GEP]], align 4
137; NO-ZVFBFMIN-NEXT:    [[I_NEXT]] = add i64 [[I]], 1
138; NO-ZVFBFMIN-NEXT:    [[DONE:%.*]] = icmp eq i64 [[I_NEXT]], [[N]]
139; NO-ZVFBFMIN-NEXT:    br i1 [[DONE]], label %[[EXIT]], label %[[LOOP]], !llvm.loop [[LOOP3:![0-9]+]]
140; NO-ZVFBFMIN:       [[EXIT]]:
141; NO-ZVFBFMIN-NEXT:    ret void
142;
143; ZVFBFMIN-LABEL: define void @vfwmaccbf16.vv(
144; ZVFBFMIN-SAME: ptr noalias [[A:%.*]], ptr noalias [[B:%.*]], ptr noalias [[C:%.*]], i64 [[N:%.*]]) #[[ATTR0]] {
145; ZVFBFMIN-NEXT:  [[ENTRY:.*]]:
146; ZVFBFMIN-NEXT:    [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
147; ZVFBFMIN-NEXT:    [[TMP1:%.*]] = mul i64 [[TMP0]], 4
148; ZVFBFMIN-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N]], [[TMP1]]
149; ZVFBFMIN-NEXT:    br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
150; ZVFBFMIN:       [[VECTOR_PH]]:
151; ZVFBFMIN-NEXT:    [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
152; ZVFBFMIN-NEXT:    [[TMP3:%.*]] = mul i64 [[TMP2]], 4
153; ZVFBFMIN-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[N]], [[TMP3]]
154; ZVFBFMIN-NEXT:    [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]]
155; ZVFBFMIN-NEXT:    [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
156; ZVFBFMIN-NEXT:    [[TMP5:%.*]] = mul i64 [[TMP4]], 4
157; ZVFBFMIN-NEXT:    br label %[[VECTOR_BODY:.*]]
158; ZVFBFMIN:       [[VECTOR_BODY]]:
159; ZVFBFMIN-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
160; ZVFBFMIN-NEXT:    [[TMP6:%.*]] = add i64 [[INDEX]], 0
161; ZVFBFMIN-NEXT:    [[TMP7:%.*]] = getelementptr bfloat, ptr [[A]], i64 [[TMP6]]
162; ZVFBFMIN-NEXT:    [[TMP8:%.*]] = getelementptr bfloat, ptr [[B]], i64 [[TMP6]]
163; ZVFBFMIN-NEXT:    [[TMP9:%.*]] = getelementptr float, ptr [[C]], i64 [[TMP6]]
164; ZVFBFMIN-NEXT:    [[TMP10:%.*]] = getelementptr bfloat, ptr [[TMP7]], i32 0
165; ZVFBFMIN-NEXT:    [[WIDE_LOAD:%.*]] = load <vscale x 4 x bfloat>, ptr [[TMP10]], align 2
166; ZVFBFMIN-NEXT:    [[TMP11:%.*]] = getelementptr bfloat, ptr [[TMP8]], i32 0
167; ZVFBFMIN-NEXT:    [[WIDE_LOAD1:%.*]] = load <vscale x 4 x bfloat>, ptr [[TMP11]], align 2
168; ZVFBFMIN-NEXT:    [[TMP12:%.*]] = getelementptr float, ptr [[TMP9]], i32 0
169; ZVFBFMIN-NEXT:    [[WIDE_LOAD2:%.*]] = load <vscale x 4 x float>, ptr [[TMP12]], align 4
170; ZVFBFMIN-NEXT:    [[TMP13:%.*]] = fpext <vscale x 4 x bfloat> [[WIDE_LOAD]] to <vscale x 4 x float>
171; ZVFBFMIN-NEXT:    [[TMP14:%.*]] = fpext <vscale x 4 x bfloat> [[WIDE_LOAD1]] to <vscale x 4 x float>
172; ZVFBFMIN-NEXT:    [[TMP15:%.*]] = call <vscale x 4 x float> @llvm.fmuladd.nxv4f32(<vscale x 4 x float> [[TMP13]], <vscale x 4 x float> [[TMP14]], <vscale x 4 x float> [[WIDE_LOAD2]])
173; ZVFBFMIN-NEXT:    store <vscale x 4 x float> [[TMP15]], ptr [[TMP12]], align 4
174; ZVFBFMIN-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
175; ZVFBFMIN-NEXT:    [[TMP16:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
176; ZVFBFMIN-NEXT:    br i1 [[TMP16]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
177; ZVFBFMIN:       [[MIDDLE_BLOCK]]:
178; ZVFBFMIN-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]]
179; ZVFBFMIN-NEXT:    br i1 [[CMP_N]], label %[[EXIT:.*]], label %[[SCALAR_PH]]
180; ZVFBFMIN:       [[SCALAR_PH]]:
181; ZVFBFMIN-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]
182; ZVFBFMIN-NEXT:    br label %[[LOOP:.*]]
183; ZVFBFMIN:       [[LOOP]]:
184; ZVFBFMIN-NEXT:    [[I:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[I_NEXT:%.*]], %[[LOOP]] ]
185; ZVFBFMIN-NEXT:    [[A_GEP:%.*]] = getelementptr bfloat, ptr [[A]], i64 [[I]]
186; ZVFBFMIN-NEXT:    [[B_GEP:%.*]] = getelementptr bfloat, ptr [[B]], i64 [[I]]
187; ZVFBFMIN-NEXT:    [[C_GEP:%.*]] = getelementptr float, ptr [[C]], i64 [[I]]
188; ZVFBFMIN-NEXT:    [[X:%.*]] = load bfloat, ptr [[A_GEP]], align 2
189; ZVFBFMIN-NEXT:    [[Y:%.*]] = load bfloat, ptr [[B_GEP]], align 2
190; ZVFBFMIN-NEXT:    [[Z:%.*]] = load float, ptr [[C_GEP]], align 4
191; ZVFBFMIN-NEXT:    [[X_EXT:%.*]] = fpext bfloat [[X]] to float
192; ZVFBFMIN-NEXT:    [[Y_EXT:%.*]] = fpext bfloat [[Y]] to float
193; ZVFBFMIN-NEXT:    [[FMULADD:%.*]] = call float @llvm.fmuladd.f32(float [[X_EXT]], float [[Y_EXT]], float [[Z]])
194; ZVFBFMIN-NEXT:    store float [[FMULADD]], ptr [[C_GEP]], align 4
195; ZVFBFMIN-NEXT:    [[I_NEXT]] = add i64 [[I]], 1
196; ZVFBFMIN-NEXT:    [[DONE:%.*]] = icmp eq i64 [[I_NEXT]], [[N]]
197; ZVFBFMIN-NEXT:    br i1 [[DONE]], label %[[EXIT]], label %[[LOOP]], !llvm.loop [[LOOP5:![0-9]+]]
198; ZVFBFMIN:       [[EXIT]]:
199; ZVFBFMIN-NEXT:    ret void
200;
201entry:
202  br label %loop
203loop:
204  %i = phi i64 [0, %entry], [%i.next, %loop]
205  %a.gep = getelementptr bfloat, ptr %a, i64 %i
206  %b.gep = getelementptr bfloat, ptr %b, i64 %i
207  %c.gep = getelementptr float, ptr %c, i64 %i
208  %x = load bfloat, ptr %a.gep
209  %y = load bfloat, ptr %b.gep
210  %z = load float, ptr %c.gep
211  %x.ext = fpext bfloat %x to float
212  %y.ext = fpext bfloat %y to float
213  %fmuladd = call float @llvm.fmuladd.f32(float %x.ext, float %y.ext, float %z)
214  store float %fmuladd, ptr %c.gep
215  %i.next = add i64 %i, 1
216  %done = icmp eq i64 %i.next, %n
217  br i1 %done, label %exit, label %loop
218exit:
219  ret void
220}
221;.
222; NO-ZVFBFMIN: [[LOOP0]] = distinct !{[[LOOP0]], [[META1:![0-9]+]], [[META2:![0-9]+]]}
223; NO-ZVFBFMIN: [[META1]] = !{!"llvm.loop.isvectorized", i32 1}
224; NO-ZVFBFMIN: [[META2]] = !{!"llvm.loop.unroll.runtime.disable"}
225; NO-ZVFBFMIN: [[LOOP3]] = distinct !{[[LOOP3]], [[META2]], [[META1]]}
226;.
227; ZVFBFMIN: [[LOOP0]] = distinct !{[[LOOP0]], [[META1:![0-9]+]], [[META2:![0-9]+]]}
228; ZVFBFMIN: [[META1]] = !{!"llvm.loop.isvectorized", i32 1}
229; ZVFBFMIN: [[META2]] = !{!"llvm.loop.unroll.runtime.disable"}
230; ZVFBFMIN: [[LOOP3]] = distinct !{[[LOOP3]], [[META2]], [[META1]]}
231; ZVFBFMIN: [[LOOP4]] = distinct !{[[LOOP4]], [[META1]], [[META2]]}
232; ZVFBFMIN: [[LOOP5]] = distinct !{[[LOOP5]], [[META2]], [[META1]]}
233;.
234