1; RUN: opt < %s  -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -dce -instcombine -S | FileCheck --check-prefix VEC4_INTERL1 %s
2; RUN: opt < %s  -loop-vectorize -force-vector-interleave=2 -force-vector-width=4 -dce -instcombine -S | FileCheck --check-prefix VEC4_INTERL2 %s
3; RUN: opt < %s  -loop-vectorize -force-vector-interleave=2 -force-vector-width=1 -dce -instcombine -S | FileCheck --check-prefix VEC1_INTERL2 %s
4; RUN: opt < %s  -loop-vectorize -force-vector-interleave=1 -force-vector-width=2 -dce -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -instcombine -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -keep-loops=false -S | FileCheck --check-prefix VEC2_INTERL1_PRED_STORE %s
5
6@fp_inc = common global float 0.000000e+00, align 4
7
8;void fp_iv_loop1(float init, float * __restrict__ A, int N) {
9;  float x = init;
10;  for (int i=0; i < N; ++i) {
11;    A[i] = x;
12;    x -= fp_inc;
13;  }
14;}
15
16; VEC4_INTERL1-LABEL: @fp_iv_loop1_fast_FMF(
17; VEC4_INTERL1:       vector.ph:
18; VEC4_INTERL1:         [[DOTSPLATINSERT:%.*]] = insertelement <4 x float> poison, float %init, i32 0
19; VEC4_INTERL1-NEXT:    [[DOTSPLAT:%.*]] = shufflevector <4 x float> [[DOTSPLATINSERT]], <4 x float> poison, <4 x i32> zeroinitializer
20; VEC4_INTERL1-NEXT:    [[DOTSPLATINSERT2:%.*]] = insertelement <4 x float> poison, float %fpinc, i32 0
21; VEC4_INTERL1-NEXT:    [[DOTSPLAT3:%.*]] = shufflevector <4 x float> [[DOTSPLATINSERT2]], <4 x float> poison, <4 x i32> zeroinitializer
22; VEC4_INTERL1-NEXT:    [[TMP5:%.*]] = fmul fast <4 x float> [[DOTSPLAT3]], <float 0.000000e+00, float 1.000000e+00, float 2.000000e+00, float 3.000000e+00>
23; VEC4_INTERL1-NEXT:    [[INDUCTION4:%.*]] = fsub fast <4 x float> [[DOTSPLAT]], [[TMP5]]
24; VEC4_INTERL1-NEXT:    [[TMP6:%.*]] = fmul fast float %fpinc, 4.000000e+00
25; VEC4_INTERL1-NEXT:    [[DOTSPLATINSERT5:%.*]] = insertelement <4 x float> poison, float [[TMP6]], i32 0
26; VEC4_INTERL1-NEXT:    [[DOTSPLAT6:%.*]] = shufflevector <4 x float> [[DOTSPLATINSERT5]], <4 x float> poison, <4 x i32> zeroinitializer
27; VEC4_INTERL1-NEXT:    br label %vector.body
28; VEC4_INTERL1:       vector.body:
29; VEC4_INTERL1-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %vector.ph ], [ [[INDEX_NEXT:%.*]], %vector.body ]
30; VEC4_INTERL1-NEXT:    [[VEC_IND:%.*]] = phi <4 x float> [ [[INDUCTION4]], %vector.ph ], [ [[VEC_IND_NEXT:%.*]], %vector.body ]
31; VEC4_INTERL1-NEXT:    [[TMP8:%.*]] = getelementptr inbounds float, float* %A, i64 [[INDEX]]
32; VEC4_INTERL1-NEXT:    [[TMP9:%.*]] = bitcast float* [[TMP8]] to <4 x float>*
33; VEC4_INTERL1-NEXT:    store <4 x float> [[VEC_IND]], <4 x float>* [[TMP9]], align 4
34; VEC4_INTERL1-NEXT:    [[INDEX_NEXT]] = add i64 [[INDEX]], 4
35; VEC4_INTERL1-NEXT:    [[VEC_IND_NEXT]] = fsub fast <4 x float> [[VEC_IND]], [[DOTSPLAT6]]
36; VEC4_INTERL1:         br i1 {{.*}}, label %middle.block, label %vector.body
37
38; VEC4_INTERL2-LABEL: @fp_iv_loop1_fast_FMF(
39; VEC4_INTERL2:       vector.ph:
40; VEC4_INTERL2:         [[DOTSPLATINSERT:%.*]] = insertelement <4 x float> poison, float %init, i32 0
41; VEC4_INTERL2-NEXT:    [[DOTSPLAT:%.*]] = shufflevector <4 x float> [[DOTSPLATINSERT]], <4 x float> poison, <4 x i32> zeroinitializer
42; VEC4_INTERL2-NEXT:    [[DOTSPLATINSERT3:%.*]] = insertelement <4 x float> poison, float %fpinc, i32 0
43; VEC4_INTERL2-NEXT:    [[DOTSPLAT4:%.*]] = shufflevector <4 x float> [[DOTSPLATINSERT3]], <4 x float> poison, <4 x i32> zeroinitializer
44; VEC4_INTERL2-NEXT:    [[TMP5:%.*]] = fmul fast <4 x float> [[DOTSPLAT4]], <float 0.000000e+00, float 1.000000e+00, float 2.000000e+00, float 3.000000e+00>
45; VEC4_INTERL2-NEXT:    [[INDUCTION5:%.*]] = fsub fast <4 x float> [[DOTSPLAT]], [[TMP5]]
46; VEC4_INTERL2-NEXT:    [[TMP6:%.*]] = fmul fast float %fpinc, 4.000000e+00
47; VEC4_INTERL2-NEXT:    [[DOTSPLATINSERT6:%.*]] = insertelement <4 x float> poison, float [[TMP6]], i32 0
48; VEC4_INTERL2-NEXT:    [[DOTSPLAT7:%.*]] = shufflevector <4 x float> [[DOTSPLATINSERT6]], <4 x float> poison, <4 x i32> zeroinitializer
49; VEC4_INTERL2-NEXT:    br label %vector.body
50; VEC4_INTERL2:       vector.body:
51; VEC4_INTERL2-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %vector.ph ], [ [[INDEX_NEXT:%.*]], %vector.body ]
52; VEC4_INTERL2-NEXT:    [[VEC_IND:%.*]] = phi <4 x float> [ [[INDUCTION5]], %vector.ph ], [ [[VEC_IND_NEXT:%.*]], %vector.body ]
53; VEC4_INTERL2-NEXT:    [[STEP_ADD:%.*]] = fsub fast <4 x float> [[VEC_IND]], [[DOTSPLAT7]]
54; VEC4_INTERL2-NEXT:    [[TMP9:%.*]] = getelementptr inbounds float, float* %A, i64 [[INDEX]]
55; VEC4_INTERL2-NEXT:    [[TMP10:%.*]] = bitcast float* [[TMP9]] to <4 x float>*
56; VEC4_INTERL2-NEXT:    store <4 x float> [[VEC_IND]], <4 x float>* [[TMP10]], align 4
57; VEC4_INTERL2-NEXT:    [[TMP11:%.*]] = getelementptr inbounds float, float* [[TMP9]], i64 4
58; VEC4_INTERL2-NEXT:    [[TMP12:%.*]] = bitcast float* [[TMP11]] to <4 x float>*
59; VEC4_INTERL2-NEXT:    store <4 x float> [[STEP_ADD]], <4 x float>* [[TMP12]], align 4
60; VEC4_INTERL2-NEXT:    [[INDEX_NEXT]] = add i64 [[INDEX]], 8
61; VEC4_INTERL2-NEXT:    [[VEC_IND_NEXT]] = fsub fast <4 x float> [[STEP_ADD]], [[DOTSPLAT7]]
62; VEC4_INTERL2:         br i1 {{.*}}, label %middle.block, label %vector.body
63
64; VEC1_INTERL2-LABEL: @fp_iv_loop1_fast_FMF(
65; VEC1_INTERL2:       vector.ph:
66; VEC1_INTERL2:         br label %vector.body
67; VEC1_INTERL2:       vector.body:
68; VEC1_INTERL2-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %vector.ph ], [ [[INDEX_NEXT:%.*]], %vector.body ]
69; VEC1_INTERL2-NEXT:    [[INDUCTION2:%.*]] = or i64 [[INDEX]], 1
70; VEC1_INTERL2-NEXT:    [[TMP6:%.*]] = sitofp i64 [[INDEX]] to float
71; VEC1_INTERL2-NEXT:    [[TMP7:%.*]] = fmul fast float %fpinc, [[TMP6]]
72; VEC1_INTERL2-NEXT:    [[FP_OFFSET_IDX:%.*]] = fsub fast float %init, [[TMP7]]
73; VEC1_INTERL2-NEXT:    [[TMP8:%.*]] = fsub fast float [[FP_OFFSET_IDX]], %fpinc
74; VEC1_INTERL2-NEXT:    [[TMP9:%.*]] = getelementptr inbounds float, float* %A, i64 [[INDEX]]
75; VEC1_INTERL2-NEXT:    [[TMP10:%.*]] = getelementptr inbounds float, float* %A, i64 [[INDUCTION2]]
76; VEC1_INTERL2-NEXT:    store float [[FP_OFFSET_IDX]], float* [[TMP9]], align 4
77; VEC1_INTERL2-NEXT:    store float [[TMP8]], float* [[TMP10]], align 4
78; VEC1_INTERL2-NEXT:    [[INDEX_NEXT]] = add i64 [[INDEX]], 2
79; VEC1_INTERL2:         br i1 {{.*}}, label %middle.block, label %vector.body
80
81define void @fp_iv_loop1_fast_FMF(float %init, float* noalias nocapture %A, i32 %N) {
82entry:
83  %cmp4 = icmp sgt i32 %N, 0
84  br i1 %cmp4, label %for.body.lr.ph, label %for.end
85
86for.body.lr.ph:                                   ; preds = %entry
87  %fpinc = load float, float* @fp_inc, align 4
88  br label %for.body
89
90for.body:                                         ; preds = %for.body, %for.body.lr.ph
91  %indvars.iv = phi i64 [ 0, %for.body.lr.ph ], [ %indvars.iv.next, %for.body ]
92  %x.05 = phi float [ %init, %for.body.lr.ph ], [ %add, %for.body ]
93  %arrayidx = getelementptr inbounds float, float* %A, i64 %indvars.iv
94  store float %x.05, float* %arrayidx, align 4
95  %add = fsub fast float %x.05, %fpinc
96  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
97  %lftr.wideiv = trunc i64 %indvars.iv.next to i32
98  %exitcond = icmp eq i32 %lftr.wideiv, %N
99  br i1 %exitcond, label %for.end.loopexit, label %for.body
100
101for.end.loopexit:                                 ; preds = %for.body
102  br label %for.end
103
104for.end:                                          ; preds = %for.end.loopexit, %entry
105  ret void
106}
107
108; We do not need the full 'fast' FMF to vectorize the loop, but the code can't become
109; 'fast' spontaneously - FMF should propagate from the original IR.
110
111define void @fp_iv_loop1_reassoc_FMF(float %init, float* noalias nocapture %A, i32 %N) {
112; VEC4_INTERL1-LABEL: @fp_iv_loop1_reassoc_FMF(
113; VEC4_INTERL1-NEXT:  entry:
114; VEC4_INTERL1-NEXT:    [[CMP4:%.*]] = icmp sgt i32 [[N:%.*]], 0
115; VEC4_INTERL1-NEXT:    br i1 [[CMP4]], label [[FOR_BODY_LR_PH:%.*]], label [[FOR_END:%.*]]
116; VEC4_INTERL1:       for.body.lr.ph:
117; VEC4_INTERL1-NEXT:    [[FPINC:%.*]] = load float, float* @fp_inc, align 4
118; VEC4_INTERL1-NEXT:    [[TMP0:%.*]] = add i32 [[N]], -1
119; VEC4_INTERL1-NEXT:    [[TMP1:%.*]] = zext i32 [[TMP0]] to i64
120; VEC4_INTERL1-NEXT:    [[TMP2:%.*]] = add nuw nsw i64 [[TMP1]], 1
121; VEC4_INTERL1-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[TMP0]], 3
122; VEC4_INTERL1-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
123; VEC4_INTERL1:       vector.ph:
124; VEC4_INTERL1-NEXT:    [[N_VEC:%.*]] = and i64 [[TMP2]], 8589934588
125; VEC4_INTERL1-NEXT:    [[CAST_CRD:%.*]] = sitofp i64 [[N_VEC]] to float
126; VEC4_INTERL1-NEXT:    [[TMP3:%.*]] = fmul reassoc float [[FPINC]], [[CAST_CRD]]
127; VEC4_INTERL1-NEXT:    [[IND_END:%.*]] = fsub reassoc float [[INIT:%.*]], [[TMP3]]
128; VEC4_INTERL1-NEXT:    [[DOTSPLATINSERT:%.*]] = insertelement <4 x float> poison, float [[INIT]], i32 0
129; VEC4_INTERL1-NEXT:    [[DOTSPLAT:%.*]] = shufflevector <4 x float> [[DOTSPLATINSERT]], <4 x float> poison, <4 x i32> zeroinitializer
130; VEC4_INTERL1-NEXT:    [[DOTSPLATINSERT2:%.*]] = insertelement <4 x float> poison, float [[FPINC]], i32 0
131; VEC4_INTERL1-NEXT:    [[DOTSPLAT3:%.*]] = shufflevector <4 x float> [[DOTSPLATINSERT2]], <4 x float> poison, <4 x i32> zeroinitializer
132; VEC4_INTERL1-NEXT:    [[TMP4:%.*]] = fmul reassoc <4 x float> [[DOTSPLAT3]], <float 0.000000e+00, float 1.000000e+00, float 2.000000e+00, float 3.000000e+00>
133; VEC4_INTERL1-NEXT:    [[INDUCTION:%.*]] = fsub reassoc <4 x float> [[DOTSPLAT]], [[TMP4]]
134; VEC4_INTERL1-NEXT:    [[TMP5:%.*]] = fmul reassoc float [[FPINC]], 4.000000e+00
135; VEC4_INTERL1-NEXT:    [[DOTSPLATINSERT4:%.*]] = insertelement <4 x float> poison, float [[TMP5]], i32 0
136; VEC4_INTERL1-NEXT:    [[DOTSPLAT5:%.*]] = shufflevector <4 x float> [[DOTSPLATINSERT4]], <4 x float> poison, <4 x i32> zeroinitializer
137; VEC4_INTERL1-NEXT:    br label [[VECTOR_BODY:%.*]]
138; VEC4_INTERL1:       vector.body:
139; VEC4_INTERL1-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
140; VEC4_INTERL1-NEXT:    [[VEC_IND:%.*]] = phi <4 x float> [ [[INDUCTION]], [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
141; VEC4_INTERL1-NEXT:    [[TMP6:%.*]] = getelementptr inbounds float, float* [[A:%.*]], i64 [[INDEX]]
142; VEC4_INTERL1-NEXT:    [[TMP7:%.*]] = bitcast float* [[TMP6]] to <4 x float>*
143; VEC4_INTERL1-NEXT:    store <4 x float> [[VEC_IND]], <4 x float>* [[TMP7]], align 4
144; VEC4_INTERL1-NEXT:    [[INDEX_NEXT]] = add i64 [[INDEX]], 4
145; VEC4_INTERL1-NEXT:    [[VEC_IND_NEXT]] = fsub reassoc <4 x float> [[VEC_IND]], [[DOTSPLAT5]]
146; VEC4_INTERL1-NEXT:    [[TMP8:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
147; VEC4_INTERL1-NEXT:    br i1 [[TMP8]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP4:!llvm.loop !.*]]
148; VEC4_INTERL1:       middle.block:
149; VEC4_INTERL1-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[TMP2]], [[N_VEC]]
150; VEC4_INTERL1-NEXT:    br i1 [[CMP_N]], label [[FOR_END_LOOPEXIT:%.*]], label [[SCALAR_PH]]
151; VEC4_INTERL1:       scalar.ph:
152; VEC4_INTERL1-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[FOR_BODY_LR_PH]] ]
153; VEC4_INTERL1-NEXT:    [[BC_RESUME_VAL1:%.*]] = phi float [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ [[INIT]], [[FOR_BODY_LR_PH]] ]
154; VEC4_INTERL1-NEXT:    br label [[FOR_BODY:%.*]]
155; VEC4_INTERL1:       for.body:
156; VEC4_INTERL1-NEXT:    [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
157; VEC4_INTERL1-NEXT:    [[X_05:%.*]] = phi float [ [[BC_RESUME_VAL1]], [[SCALAR_PH]] ], [ [[ADD:%.*]], [[FOR_BODY]] ]
158; VEC4_INTERL1-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[INDVARS_IV]]
159; VEC4_INTERL1-NEXT:    store float [[X_05]], float* [[ARRAYIDX]], align 4
160; VEC4_INTERL1-NEXT:    [[ADD]] = fsub reassoc float [[X_05]], [[FPINC]]
161; VEC4_INTERL1-NEXT:    [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
162; VEC4_INTERL1-NEXT:    [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32
163; VEC4_INTERL1-NEXT:    [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]]
164; VEC4_INTERL1-NEXT:    br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT]], label [[FOR_BODY]], [[LOOP5:!llvm.loop !.*]]
165; VEC4_INTERL1:       for.end.loopexit:
166; VEC4_INTERL1-NEXT:    br label [[FOR_END]]
167; VEC4_INTERL1:       for.end:
168; VEC4_INTERL1-NEXT:    ret void
169;
170; VEC4_INTERL2-LABEL: @fp_iv_loop1_reassoc_FMF(
171; VEC4_INTERL2-NEXT:  entry:
172; VEC4_INTERL2-NEXT:    [[CMP4:%.*]] = icmp sgt i32 [[N:%.*]], 0
173; VEC4_INTERL2-NEXT:    br i1 [[CMP4]], label [[FOR_BODY_LR_PH:%.*]], label [[FOR_END:%.*]]
174; VEC4_INTERL2:       for.body.lr.ph:
175; VEC4_INTERL2-NEXT:    [[FPINC:%.*]] = load float, float* @fp_inc, align 4
176; VEC4_INTERL2-NEXT:    [[TMP0:%.*]] = add i32 [[N]], -1
177; VEC4_INTERL2-NEXT:    [[TMP1:%.*]] = zext i32 [[TMP0]] to i64
178; VEC4_INTERL2-NEXT:    [[TMP2:%.*]] = add nuw nsw i64 [[TMP1]], 1
179; VEC4_INTERL2-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[TMP0]], 7
180; VEC4_INTERL2-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
181; VEC4_INTERL2:       vector.ph:
182; VEC4_INTERL2-NEXT:    [[N_VEC:%.*]] = and i64 [[TMP2]], 8589934584
183; VEC4_INTERL2-NEXT:    [[CAST_CRD:%.*]] = sitofp i64 [[N_VEC]] to float
184; VEC4_INTERL2-NEXT:    [[TMP3:%.*]] = fmul reassoc float [[FPINC]], [[CAST_CRD]]
185; VEC4_INTERL2-NEXT:    [[IND_END:%.*]] = fsub reassoc float [[INIT:%.*]], [[TMP3]]
186; VEC4_INTERL2-NEXT:    [[DOTSPLATINSERT:%.*]] = insertelement <4 x float> poison, float [[INIT]], i32 0
187; VEC4_INTERL2-NEXT:    [[DOTSPLAT:%.*]] = shufflevector <4 x float> [[DOTSPLATINSERT]], <4 x float> poison, <4 x i32> zeroinitializer
188; VEC4_INTERL2-NEXT:    [[DOTSPLATINSERT2:%.*]] = insertelement <4 x float> poison, float [[FPINC]], i32 0
189; VEC4_INTERL2-NEXT:    [[DOTSPLAT3:%.*]] = shufflevector <4 x float> [[DOTSPLATINSERT2]], <4 x float> poison, <4 x i32> zeroinitializer
190; VEC4_INTERL2-NEXT:    [[TMP4:%.*]] = fmul reassoc <4 x float> [[DOTSPLAT3]], <float 0.000000e+00, float 1.000000e+00, float 2.000000e+00, float 3.000000e+00>
191; VEC4_INTERL2-NEXT:    [[INDUCTION:%.*]] = fsub reassoc <4 x float> [[DOTSPLAT]], [[TMP4]]
192; VEC4_INTERL2-NEXT:    [[TMP5:%.*]] = fmul reassoc float [[FPINC]], 4.000000e+00
193; VEC4_INTERL2-NEXT:    [[DOTSPLATINSERT4:%.*]] = insertelement <4 x float> poison, float [[TMP5]], i32 0
194; VEC4_INTERL2-NEXT:    [[DOTSPLAT5:%.*]] = shufflevector <4 x float> [[DOTSPLATINSERT4]], <4 x float> poison, <4 x i32> zeroinitializer
195; VEC4_INTERL2-NEXT:    br label [[VECTOR_BODY:%.*]]
196; VEC4_INTERL2:       vector.body:
197; VEC4_INTERL2-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
198; VEC4_INTERL2-NEXT:    [[VEC_IND:%.*]] = phi <4 x float> [ [[INDUCTION]], [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
199; VEC4_INTERL2-NEXT:    [[STEP_ADD:%.*]] = fsub reassoc <4 x float> [[VEC_IND]], [[DOTSPLAT5]]
200; VEC4_INTERL2-NEXT:    [[TMP6:%.*]] = getelementptr inbounds float, float* [[A:%.*]], i64 [[INDEX]]
201; VEC4_INTERL2-NEXT:    [[TMP7:%.*]] = bitcast float* [[TMP6]] to <4 x float>*
202; VEC4_INTERL2-NEXT:    store <4 x float> [[VEC_IND]], <4 x float>* [[TMP7]], align 4
203; VEC4_INTERL2-NEXT:    [[TMP8:%.*]] = getelementptr inbounds float, float* [[TMP6]], i64 4
204; VEC4_INTERL2-NEXT:    [[TMP9:%.*]] = bitcast float* [[TMP8]] to <4 x float>*
205; VEC4_INTERL2-NEXT:    store <4 x float> [[STEP_ADD]], <4 x float>* [[TMP9]], align 4
206; VEC4_INTERL2-NEXT:    [[INDEX_NEXT]] = add i64 [[INDEX]], 8
207; VEC4_INTERL2-NEXT:    [[VEC_IND_NEXT]] = fsub reassoc <4 x float> [[STEP_ADD]], [[DOTSPLAT5]]
208; VEC4_INTERL2-NEXT:    [[TMP10:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
209; VEC4_INTERL2-NEXT:    br i1 [[TMP10]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP4:!llvm.loop !.*]]
210; VEC4_INTERL2:       middle.block:
211; VEC4_INTERL2-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[TMP2]], [[N_VEC]]
212; VEC4_INTERL2-NEXT:    br i1 [[CMP_N]], label [[FOR_END_LOOPEXIT:%.*]], label [[SCALAR_PH]]
213; VEC4_INTERL2:       scalar.ph:
214; VEC4_INTERL2-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[FOR_BODY_LR_PH]] ]
215; VEC4_INTERL2-NEXT:    [[BC_RESUME_VAL1:%.*]] = phi float [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ [[INIT]], [[FOR_BODY_LR_PH]] ]
216; VEC4_INTERL2-NEXT:    br label [[FOR_BODY:%.*]]
217; VEC4_INTERL2:       for.body:
218; VEC4_INTERL2-NEXT:    [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
219; VEC4_INTERL2-NEXT:    [[X_05:%.*]] = phi float [ [[BC_RESUME_VAL1]], [[SCALAR_PH]] ], [ [[ADD:%.*]], [[FOR_BODY]] ]
220; VEC4_INTERL2-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[INDVARS_IV]]
221; VEC4_INTERL2-NEXT:    store float [[X_05]], float* [[ARRAYIDX]], align 4
222; VEC4_INTERL2-NEXT:    [[ADD]] = fsub reassoc float [[X_05]], [[FPINC]]
223; VEC4_INTERL2-NEXT:    [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
224; VEC4_INTERL2-NEXT:    [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32
225; VEC4_INTERL2-NEXT:    [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]]
226; VEC4_INTERL2-NEXT:    br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT]], label [[FOR_BODY]], [[LOOP5:!llvm.loop !.*]]
227; VEC4_INTERL2:       for.end.loopexit:
228; VEC4_INTERL2-NEXT:    br label [[FOR_END]]
229; VEC4_INTERL2:       for.end:
230; VEC4_INTERL2-NEXT:    ret void
231;
232; VEC1_INTERL2-LABEL: @fp_iv_loop1_reassoc_FMF(
233; VEC1_INTERL2-NEXT:  entry:
234; VEC1_INTERL2-NEXT:    [[CMP4:%.*]] = icmp sgt i32 [[N:%.*]], 0
235; VEC1_INTERL2-NEXT:    br i1 [[CMP4]], label [[FOR_BODY_LR_PH:%.*]], label [[FOR_END:%.*]]
236; VEC1_INTERL2:       for.body.lr.ph:
237; VEC1_INTERL2-NEXT:    [[FPINC:%.*]] = load float, float* @fp_inc, align 4
238; VEC1_INTERL2-NEXT:    br label [[FOR_BODY:%.*]]
239; VEC1_INTERL2:       for.body:
240; VEC1_INTERL2-NEXT:    [[INDVARS_IV:%.*]] = phi i64 [ 0, [[FOR_BODY_LR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
241; VEC1_INTERL2-NEXT:    [[X_05:%.*]] = phi float [ [[INIT:%.*]], [[FOR_BODY_LR_PH]] ], [ [[ADD:%.*]], [[FOR_BODY]] ]
242; VEC1_INTERL2-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds float, float* [[A:%.*]], i64 [[INDVARS_IV]]
243; VEC1_INTERL2-NEXT:    store float [[X_05]], float* [[ARRAYIDX]], align 4
244; VEC1_INTERL2-NEXT:    [[ADD]] = fsub reassoc float [[X_05]], [[FPINC]]
245; VEC1_INTERL2-NEXT:    [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
246; VEC1_INTERL2-NEXT:    [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32
247; VEC1_INTERL2-NEXT:    [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]]
248; VEC1_INTERL2-NEXT:    br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]]
249; VEC1_INTERL2:       for.end.loopexit:
250; VEC1_INTERL2-NEXT:    br label [[FOR_END]]
251; VEC1_INTERL2:       for.end:
252; VEC1_INTERL2-NEXT:    ret void
253;
254; VEC2_INTERL1_PRED_STORE-LABEL: @fp_iv_loop1_reassoc_FMF(
255; VEC2_INTERL1_PRED_STORE-NEXT:  entry:
256; VEC2_INTERL1_PRED_STORE-NEXT:    [[CMP4:%.*]] = icmp sgt i32 [[N:%.*]], 0
257; VEC2_INTERL1_PRED_STORE-NEXT:    br i1 [[CMP4]], label [[FOR_BODY_LR_PH:%.*]], label [[FOR_END:%.*]]
258; VEC2_INTERL1_PRED_STORE:       for.body.lr.ph:
259; VEC2_INTERL1_PRED_STORE-NEXT:    [[FPINC:%.*]] = load float, float* @fp_inc, align 4
260; VEC2_INTERL1_PRED_STORE-NEXT:    [[TMP0:%.*]] = add i32 [[N]], -1
261; VEC2_INTERL1_PRED_STORE-NEXT:    [[TMP1:%.*]] = zext i32 [[TMP0]] to i64
262; VEC2_INTERL1_PRED_STORE-NEXT:    [[TMP2:%.*]] = add nuw nsw i64 [[TMP1]], 1
263; VEC2_INTERL1_PRED_STORE-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp eq i32 [[TMP0]], 0
264; VEC2_INTERL1_PRED_STORE-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[FOR_BODY:%.*]], label [[VECTOR_PH:%.*]]
265; VEC2_INTERL1_PRED_STORE:       vector.ph:
266; VEC2_INTERL1_PRED_STORE-NEXT:    [[N_VEC:%.*]] = and i64 [[TMP2]], 8589934590
267; VEC2_INTERL1_PRED_STORE-NEXT:    [[CAST_CRD:%.*]] = sitofp i64 [[N_VEC]] to float
268; VEC2_INTERL1_PRED_STORE-NEXT:    [[TMP3:%.*]] = fmul reassoc float [[FPINC]], [[CAST_CRD]]
269; VEC2_INTERL1_PRED_STORE-NEXT:    [[IND_END:%.*]] = fsub reassoc float [[INIT:%.*]], [[TMP3]]
270; VEC2_INTERL1_PRED_STORE-NEXT:    [[DOTSPLATINSERT:%.*]] = insertelement <2 x float> poison, float [[INIT]], i32 0
271; VEC2_INTERL1_PRED_STORE-NEXT:    [[DOTSPLAT:%.*]] = shufflevector <2 x float> [[DOTSPLATINSERT]], <2 x float> poison, <2 x i32> zeroinitializer
272; VEC2_INTERL1_PRED_STORE-NEXT:    [[DOTSPLATINSERT2:%.*]] = insertelement <2 x float> poison, float [[FPINC]], i32 0
273; VEC2_INTERL1_PRED_STORE-NEXT:    [[DOTSPLAT3:%.*]] = shufflevector <2 x float> [[DOTSPLATINSERT2]], <2 x float> poison, <2 x i32> zeroinitializer
274; VEC2_INTERL1_PRED_STORE-NEXT:    [[TMP4:%.*]] = fmul reassoc <2 x float> [[DOTSPLAT3]], <float 0.000000e+00, float 1.000000e+00>
275; VEC2_INTERL1_PRED_STORE-NEXT:    [[INDUCTION:%.*]] = fsub reassoc <2 x float> [[DOTSPLAT]], [[TMP4]]
276; VEC2_INTERL1_PRED_STORE-NEXT:    [[TMP5:%.*]] = fmul reassoc float [[FPINC]], 2.000000e+00
277; VEC2_INTERL1_PRED_STORE-NEXT:    [[DOTSPLATINSERT4:%.*]] = insertelement <2 x float> poison, float [[TMP5]], i32 0
278; VEC2_INTERL1_PRED_STORE-NEXT:    [[DOTSPLAT5:%.*]] = shufflevector <2 x float> [[DOTSPLATINSERT4]], <2 x float> poison, <2 x i32> zeroinitializer
279; VEC2_INTERL1_PRED_STORE-NEXT:    br label [[VECTOR_BODY:%.*]]
280; VEC2_INTERL1_PRED_STORE:       vector.body:
281; VEC2_INTERL1_PRED_STORE-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
282; VEC2_INTERL1_PRED_STORE-NEXT:    [[VEC_IND:%.*]] = phi <2 x float> [ [[INDUCTION]], [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
283; VEC2_INTERL1_PRED_STORE-NEXT:    [[TMP6:%.*]] = getelementptr inbounds float, float* [[A:%.*]], i64 [[INDEX]]
284; VEC2_INTERL1_PRED_STORE-NEXT:    [[TMP7:%.*]] = bitcast float* [[TMP6]] to <2 x float>*
285; VEC2_INTERL1_PRED_STORE-NEXT:    store <2 x float> [[VEC_IND]], <2 x float>* [[TMP7]], align 4
286; VEC2_INTERL1_PRED_STORE-NEXT:    [[INDEX_NEXT]] = add i64 [[INDEX]], 2
287; VEC2_INTERL1_PRED_STORE-NEXT:    [[VEC_IND_NEXT]] = fsub reassoc <2 x float> [[VEC_IND]], [[DOTSPLAT5]]
288; VEC2_INTERL1_PRED_STORE-NEXT:    [[TMP8:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
289; VEC2_INTERL1_PRED_STORE-NEXT:    br i1 [[TMP8]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP4:!llvm.loop !.*]]
290; VEC2_INTERL1_PRED_STORE:       middle.block:
291; VEC2_INTERL1_PRED_STORE-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[TMP2]], [[N_VEC]]
292; VEC2_INTERL1_PRED_STORE-NEXT:    br i1 [[CMP_N]], label [[FOR_END]], label [[FOR_BODY]]
293; VEC2_INTERL1_PRED_STORE:       for.body:
294; VEC2_INTERL1_PRED_STORE-NEXT:    [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[FOR_BODY_LR_PH]] ]
295; VEC2_INTERL1_PRED_STORE-NEXT:    [[X_05:%.*]] = phi float [ [[ADD:%.*]], [[FOR_BODY]] ], [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ [[INIT]], [[FOR_BODY_LR_PH]] ]
296; VEC2_INTERL1_PRED_STORE-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[INDVARS_IV]]
297; VEC2_INTERL1_PRED_STORE-NEXT:    store float [[X_05]], float* [[ARRAYIDX]], align 4
298; VEC2_INTERL1_PRED_STORE-NEXT:    [[ADD]] = fsub reassoc float [[X_05]], [[FPINC]]
299; VEC2_INTERL1_PRED_STORE-NEXT:    [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
300; VEC2_INTERL1_PRED_STORE-NEXT:    [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32
301; VEC2_INTERL1_PRED_STORE-NEXT:    [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]]
302; VEC2_INTERL1_PRED_STORE-NEXT:    br i1 [[EXITCOND]], label [[FOR_END]], label [[FOR_BODY]], [[LOOP5:!llvm.loop !.*]]
303; VEC2_INTERL1_PRED_STORE:       for.end:
304; VEC2_INTERL1_PRED_STORE-NEXT:    ret void
305;
306entry:
307  %cmp4 = icmp sgt i32 %N, 0
308  br i1 %cmp4, label %for.body.lr.ph, label %for.end
309
310for.body.lr.ph:                                   ; preds = %entry
311  %fpinc = load float, float* @fp_inc, align 4
312  br label %for.body
313
314for.body:                                         ; preds = %for.body, %for.body.lr.ph
315  %indvars.iv = phi i64 [ 0, %for.body.lr.ph ], [ %indvars.iv.next, %for.body ]
316  %x.05 = phi float [ %init, %for.body.lr.ph ], [ %add, %for.body ]
317  %arrayidx = getelementptr inbounds float, float* %A, i64 %indvars.iv
318  store float %x.05, float* %arrayidx, align 4
319  %add = fsub reassoc float %x.05, %fpinc
320  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
321  %lftr.wideiv = trunc i64 %indvars.iv.next to i32
322  %exitcond = icmp eq i32 %lftr.wideiv, %N
323  br i1 %exitcond, label %for.end.loopexit, label %for.body
324
325for.end.loopexit:                                 ; preds = %for.body
326  br label %for.end
327
328for.end:                                          ; preds = %for.end.loopexit, %entry
329  ret void
330}
331
332;void fp_iv_loop2(float init, float * __restrict__ A, int N) {
333;  float x = init;
334;  for (int i=0; i < N; ++i) {
335;    A[i] = x;
336;    x += 0.5;
337;  }
338;}
339
340; VEC4_INTERL1-LABEL: @fp_iv_loop2(
341; VEC4_INTERL1:       vector.ph:
342; VEC4_INTERL1:         [[DOTSPLATINSERT:%.*]] = insertelement <4 x float> poison, float %init, i32 0
343; VEC4_INTERL1-NEXT:    [[DOTSPLAT:%.*]] = shufflevector <4 x float> [[DOTSPLATINSERT]], <4 x float> poison, <4 x i32> zeroinitializer
344; VEC4_INTERL1-NEXT:    [[INDUCTION2:%.*]] = fadd fast <4 x float> [[DOTSPLAT]], <float 0.000000e+00, float 5.000000e-01, float 1.000000e+00, float 1.500000e+00>
345; VEC4_INTERL1-NEXT:    br label %vector.body
346; VEC4_INTERL1:       vector.body:
347; VEC4_INTERL1-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %vector.ph ], [ [[INDEX_NEXT:%.*]], %vector.body ]
348; VEC4_INTERL1-NEXT:    [[VEC_IND:%.*]] = phi <4 x float> [ [[INDUCTION2]], %vector.ph ], [ [[VEC_IND_NEXT:%.*]], %vector.body ]
349; VEC4_INTERL1-NEXT:    [[TMP7:%.*]] = getelementptr inbounds float, float* %A, i64 [[INDEX]]
350; VEC4_INTERL1-NEXT:    [[TMP8:%.*]] = bitcast float* [[TMP7]] to <4 x float>*
351; VEC4_INTERL1-NEXT:    store <4 x float> [[VEC_IND]], <4 x float>* [[TMP8]], align 4
352; VEC4_INTERL1-NEXT:    [[INDEX_NEXT]] = add i64 [[INDEX]], 4
353; VEC4_INTERL1-NEXT:    [[VEC_IND_NEXT]] = fadd fast <4 x float> [[VEC_IND]], <float 2.000000e+00, float 2.000000e+00, float 2.000000e+00, float 2.000000e+00>
354; VEC4_INTERL1:         br i1 {{.*}}, label %middle.block, label %vector.body
355
356define void @fp_iv_loop2(float %init, float* noalias nocapture %A, i32 %N) #0 {
357entry:
358  %cmp4 = icmp sgt i32 %N, 0
359  br i1 %cmp4, label %for.body.preheader, label %for.end
360
361for.body.preheader:                               ; preds = %entry
362  br label %for.body
363
364for.body:                                         ; preds = %for.body.preheader, %for.body
365  %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ]
366  %x.06 = phi float [ %conv1, %for.body ], [ %init, %for.body.preheader ]
367  %arrayidx = getelementptr inbounds float, float* %A, i64 %indvars.iv
368  store float %x.06, float* %arrayidx, align 4
369  %conv1 = fadd fast float %x.06, 5.000000e-01
370  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
371  %lftr.wideiv = trunc i64 %indvars.iv.next to i32
372  %exitcond = icmp eq i32 %lftr.wideiv, %N
373  br i1 %exitcond, label %for.end.loopexit, label %for.body
374
375for.end.loopexit:                                 ; preds = %for.body
376  br label %for.end
377
378for.end:                                          ; preds = %for.end.loopexit, %entry
379  ret void
380}
381
382;void fp_iv_loop3(float init, float * __restrict__ A, float * __restrict__ B, float * __restrict__ C, int N) {
383;  int i = 0;
384;  float x = init;
385;  float y = 0.1;
386;  for (; i < N; ++i) {
387;    A[i] = x;
388;    x += fp_inc;
389;    y -= 0.5;
390;    B[i] = x + y;
391;    C[i] = y;
392;  }
393;}
394
395; VEC4_INTERL1-LABEL: @fp_iv_loop3(
396; VEC4_INTERL1:       for.body.lr.ph:
397; VEC4_INTERL1:         [[TMP0:%.*]] = load float, float* @fp_inc, align 4
398; VEC4_INTERL1:       vector.ph:
399; VEC4_INTERL1:         [[DOTSPLATINSERT:%.*]] = insertelement <4 x float> poison, float %init, i32 0
400; VEC4_INTERL1-NEXT:    [[DOTSPLAT:%.*]] = shufflevector <4 x float> [[DOTSPLATINSERT]], <4 x float> poison, <4 x i32> zeroinitializer
401; VEC4_INTERL1-NEXT:    [[DOTSPLATINSERT5:%.*]] = insertelement <4 x float> poison, float [[TMP0]], i32 0
402; VEC4_INTERL1-NEXT:    [[DOTSPLAT6:%.*]] = shufflevector <4 x float> [[DOTSPLATINSERT5]], <4 x float> poison, <4 x i32> zeroinitializer
403; VEC4_INTERL1-NEXT:    [[TMP7:%.*]] = fmul fast <4 x float> [[DOTSPLAT6]], <float 0.000000e+00, float 1.000000e+00, float 2.000000e+00, float 3.000000e+00>
404; VEC4_INTERL1-NEXT:    [[INDUCTION7:%.*]] = fadd fast <4 x float> [[DOTSPLAT]], [[TMP7]]
405; VEC4_INTERL1-NEXT:    [[TMP8:%.*]] = fmul fast float [[TMP0]], 4.000000e+00
406; VEC4_INTERL1-NEXT:    [[DOTSPLATINSERT8:%.*]] = insertelement <4 x float> poison, float [[TMP8]], i32 0
407; VEC4_INTERL1-NEXT:    [[DOTSPLAT9:%.*]] = shufflevector <4 x float> [[DOTSPLATINSERT8]], <4 x float> poison, <4 x i32> zeroinitializer
408; VEC4_INTERL1-NEXT:    [[BROADCAST_SPLATINSERT12:%.*]] = insertelement <4 x float> poison, float [[TMP0]], i32 0
409; VEC4_INTERL1-NEXT:    [[BROADCAST_SPLAT13:%.*]] = shufflevector <4 x float> [[BROADCAST_SPLATINSERT12]], <4 x float> poison, <4 x i32> zeroinitializer
410; VEC4_INTERL1-NEXT:    br label [[VECTOR_BODY:%.*]]
411; VEC4_INTERL1:       vector.body:
412; VEC4_INTERL1-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %vector.ph ], [ [[INDEX_NEXT:%.*]], %vector.body ]
413; VEC4_INTERL1-NEXT:    [[VEC_IND:%.*]] = phi <4 x float> [ <float 0x3FB99999A0000000, float 0xBFD99999A0000000, float 0xBFECCCCCC0000000, float 0xBFF6666660000000>, %vector.ph ], [ [[VEC_IND_NEXT:%.*]], %vector.body ]
414; VEC4_INTERL1-NEXT:    [[VEC_IND10:%.*]] = phi <4 x float> [ [[INDUCTION7]], %vector.ph ], [ [[VEC_IND_NEXT11:%.*]], %vector.body ]
415; VEC4_INTERL1-NEXT:    [[TMP12:%.*]] = getelementptr inbounds float, float* %A, i64 [[INDEX]]
416; VEC4_INTERL1-NEXT:    [[TMP13:%.*]] = bitcast float* [[TMP12]] to <4 x float>*
417; VEC4_INTERL1-NEXT:    store <4 x float> [[VEC_IND10]], <4 x float>* [[TMP13]], align 4
418; VEC4_INTERL1-NEXT:    [[TMP14:%.*]] = fadd fast <4 x float> [[VEC_IND10]], [[BROADCAST_SPLAT13]]
419; VEC4_INTERL1-NEXT:    [[TMP15:%.*]] = fadd fast <4 x float> [[VEC_IND]], <float -5.000000e-01, float -5.000000e-01, float -5.000000e-01, float -5.000000e-01>
420; VEC4_INTERL1-NEXT:    [[TMP16:%.*]] = fadd fast <4 x float> [[TMP15]], [[TMP14]]
421; VEC4_INTERL1-NEXT:    [[TMP17:%.*]] = getelementptr inbounds float, float* %B, i64 [[INDEX]]
422; VEC4_INTERL1-NEXT:    [[TMP18:%.*]] = bitcast float* [[TMP17]] to <4 x float>*
423; VEC4_INTERL1-NEXT:    store <4 x float> [[TMP16]], <4 x float>* [[TMP18]], align 4
424; VEC4_INTERL1-NEXT:    [[TMP19:%.*]] = getelementptr inbounds float, float* %C, i64 [[INDEX]]
425; VEC4_INTERL1-NEXT:    [[TMP20:%.*]] = bitcast float* [[TMP19]] to <4 x float>*
426; VEC4_INTERL1-NEXT:    store <4 x float> [[TMP15]], <4 x float>* [[TMP20]], align 4
427; VEC4_INTERL1-NEXT:    [[INDEX_NEXT]] = add i64 [[INDEX]], 4
428; VEC4_INTERL1-NEXT:    [[VEC_IND_NEXT]] = fadd fast <4 x float> [[VEC_IND]], <float -2.000000e+00, float -2.000000e+00, float -2.000000e+00, float -2.000000e+00>
429; VEC4_INTERL1-NEXT:    [[VEC_IND_NEXT11]] = fadd fast <4 x float> [[VEC_IND10]], [[DOTSPLAT9]]
430; VEC4_INTERL1:         br i1 {{.*}}, label %middle.block, label %vector.body
431
432define void @fp_iv_loop3(float %init, float* noalias nocapture %A, float* noalias nocapture %B, float* noalias nocapture %C, i32 %N) {
433entry:
434  %cmp9 = icmp sgt i32 %N, 0
435  br i1 %cmp9, label %for.body.lr.ph, label %for.end
436
437for.body.lr.ph:                                   ; preds = %entry
438  %0 = load float, float* @fp_inc, align 4
439  br label %for.body
440
441for.body:                                         ; preds = %for.body, %for.body.lr.ph
442  %indvars.iv = phi i64 [ 0, %for.body.lr.ph ], [ %indvars.iv.next, %for.body ]
443  %y.012 = phi float [ 0x3FB99999A0000000, %for.body.lr.ph ], [ %conv1, %for.body ]
444  %x.011 = phi float [ %init, %for.body.lr.ph ], [ %add, %for.body ]
445  %arrayidx = getelementptr inbounds float, float* %A, i64 %indvars.iv
446  store float %x.011, float* %arrayidx, align 4
447  %add = fadd fast float %x.011, %0
448  %conv1 = fadd fast float %y.012, -5.000000e-01
449  %add2 = fadd fast float %conv1, %add
450  %arrayidx4 = getelementptr inbounds float, float* %B, i64 %indvars.iv
451  store float %add2, float* %arrayidx4, align 4
452  %arrayidx6 = getelementptr inbounds float, float* %C, i64 %indvars.iv
453  store float %conv1, float* %arrayidx6, align 4
454  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
455  %lftr.wideiv = trunc i64 %indvars.iv.next to i32
456  %exitcond = icmp eq i32 %lftr.wideiv, %N
457  br i1 %exitcond, label %for.end.loopexit, label %for.body
458
459for.end.loopexit:
460  br label %for.end
461
462for.end:
463  ret void
464}
465
466; Start and step values are constants. There is no 'fmul' operation in this case
467;void fp_iv_loop4(float * __restrict__ A, int N) {
468;  float x = 1.0;
469;  for (int i=0; i < N; ++i) {
470;    A[i] = x;
471;    x += 0.5;
472;  }
473;}
474
475; VEC4_INTERL1-LABEL: @fp_iv_loop4(
476; VEC4_INTERL1:       vector.ph:
477; VEC4_INTERL1:         br label %vector.body
478; VEC4_INTERL1:       vector.body:
479; VEC4_INTERL1-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %vector.ph ], [ [[INDEX_NEXT:%.*]], %vector.body ]
480; VEC4_INTERL1-NEXT:    [[VEC_IND:%.*]] = phi <4 x float> [ <float 1.000000e+00, float 1.500000e+00, float 2.000000e+00, float 2.500000e+00>, %vector.ph ], [ [[VEC_IND_NEXT:%.*]], %vector.body ]
481; VEC4_INTERL1-NEXT:    [[TMP7:%.*]] = getelementptr inbounds float, float* %A, i64 [[INDEX]]
482; VEC4_INTERL1-NEXT:    [[TMP8:%.*]] = bitcast float* [[TMP7]] to <4 x float>*
483; VEC4_INTERL1-NEXT:    store <4 x float> [[VEC_IND]], <4 x float>* [[TMP8]], align 4
484; VEC4_INTERL1-NEXT:    [[INDEX_NEXT]] = add i64 [[INDEX]], 4
485; VEC4_INTERL1-NEXT:    [[VEC_IND_NEXT]] = fadd fast <4 x float> [[VEC_IND]], <float 2.000000e+00, float 2.000000e+00, float 2.000000e+00, float 2.000000e+00>
486; VEC4_INTERL1:         br i1 {{.*}}, label %middle.block, label %vector.body
487
488define void @fp_iv_loop4(float* noalias nocapture %A, i32 %N) {
489entry:
490  %cmp4 = icmp sgt i32 %N, 0
491  br i1 %cmp4, label %for.body.preheader, label %for.end
492
493for.body.preheader:                               ; preds = %entry
494  br label %for.body
495
496for.body:                                         ; preds = %for.body.preheader, %for.body
497  %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ]
498  %x.06 = phi float [ %conv1, %for.body ], [ 1.000000e+00, %for.body.preheader ]
499  %arrayidx = getelementptr inbounds float, float* %A, i64 %indvars.iv
500  store float %x.06, float* %arrayidx, align 4
501  %conv1 = fadd fast float %x.06, 5.000000e-01
502  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
503  %lftr.wideiv = trunc i64 %indvars.iv.next to i32
504  %exitcond = icmp eq i32 %lftr.wideiv, %N
505  br i1 %exitcond, label %for.end.loopexit, label %for.body
506
507for.end.loopexit:                                 ; preds = %for.body
508  br label %for.end
509
510for.end:                                          ; preds = %for.end.loopexit, %entry
511  ret void
512}
513
514; VEC2_INTERL1_PRED_STORE-LABEL: @non_primary_iv_float_scalar(
515; VEC2_INTERL1_PRED_STORE:       vector.body:
516; VEC2_INTERL1_PRED_STORE-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %vector.ph ], [ [[INDEX_NEXT:%.*]], %[[PRED_STORE_CONTINUE7:.*]] ]
517; VEC2_INTERL1_PRED_STORE-NEXT:    [[TMP1:%.*]] = sitofp i64 [[INDEX]] to float
518; VEC2_INTERL1_PRED_STORE-NEXT:    [[TMP2:%.*]] = getelementptr inbounds float, float* %A, i64 [[INDEX]]
519; VEC2_INTERL1_PRED_STORE-NEXT:    [[TMP3:%.*]] = bitcast float* [[TMP2]] to <2 x float>*
520; VEC2_INTERL1_PRED_STORE-NEXT:    [[WIDE_LOAD:%.*]] = load <2 x float>, <2 x float>* [[TMP3]], align 4
521; VEC2_INTERL1_PRED_STORE-NEXT:    [[TMP4:%.*]] = fcmp fast oeq <2 x float> [[WIDE_LOAD]], zeroinitializer
522; VEC2_INTERL1_PRED_STORE-NEXT:    [[TMP5:%.*]] = extractelement <2 x i1> [[TMP4]], i32 0
523; VEC2_INTERL1_PRED_STORE-NEXT:    br i1 [[TMP5]], label %[[PRED_STORE_IF:.*]], label %[[PRED_STORE_CONTINUE:.*]]
524; VEC2_INTERL1_PRED_STORE:       [[PRED_STORE_IF]]:
525; VEC2_INTERL1_PRED_STORE-NEXT:    store float [[TMP1]], float* [[TMP2]], align 4
526; VEC2_INTERL1_PRED_STORE-NEXT:    br label %[[PRED_STORE_CONTINUE]]
527; VEC2_INTERL1_PRED_STORE:       [[PRED_STORE_CONTINUE]]:
528; VEC2_INTERL1_PRED_STORE-NEXT:    [[TMP8:%.*]] = extractelement <2 x i1> [[TMP4]], i32 1
529; VEC2_INTERL1_PRED_STORE-NEXT:    br i1 [[TMP8]], label %[[PRED_STORE_IF6:.*]], label %[[PRED_STORE_CONTINUE7]]
530; VEC2_INTERL1_PRED_STORE:       [[PRED_STORE_IF6]]:
531; VEC2_INTERL1_PRED_STORE-NEXT:    [[TMP9:%.*]] = fadd fast float [[TMP1]], 1.000000e+00
532; VEC2_INTERL1_PRED_STORE-NEXT:    [[TMP10:%.*]] = or i64 [[INDEX]], 1
533; VEC2_INTERL1_PRED_STORE-NEXT:    [[TMP11:%.*]] = getelementptr inbounds float, float* %A, i64 [[TMP10]]
534; VEC2_INTERL1_PRED_STORE-NEXT:    store float [[TMP9]], float* [[TMP11]], align 4
535; VEC2_INTERL1_PRED_STORE-NEXT:    br label %[[PRED_STORE_CONTINUE7]]
536; VEC2_INTERL1_PRED_STORE:       [[PRED_STORE_CONTINUE7]]:
537; VEC2_INTERL1_PRED_STORE-NEXT:    [[INDEX_NEXT]] = add i64 [[INDEX]], 2
538; VEC2_INTERL1_PRED_STORE:         br i1 {{.*}}, label %middle.block, label %vector.body
539
540define void @non_primary_iv_float_scalar(float* %A, i64 %N) {
541entry:
542  br label %for.body
543
544for.body:
545  %i = phi i64 [ %i.next, %for.inc ], [ 0, %entry ]
546  %j = phi float [ %j.next, %for.inc ], [ 0.0, %entry ]
547  %tmp0 = getelementptr inbounds float, float* %A, i64 %i
548  %tmp1 = load float, float* %tmp0, align 4
549  %tmp2 = fcmp fast oeq float %tmp1, 0.0
550  br i1 %tmp2, label %if.pred, label %for.inc
551
552if.pred:
553  store float %j, float* %tmp0, align 4
554  br label %for.inc
555
556for.inc:
557  %i.next = add nuw nsw i64 %i, 1
558  %j.next = fadd fast float %j, 1.0
559  %cond = icmp slt i64 %i.next, %N
560  br i1 %cond, label %for.body, label %for.end
561
562for.end:
563  ret void
564}
565