1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc < %s -mtriple=aarch64-linux-gnuabi -mattr=+fullfp16 -O3 | FileCheck %s
4 define void @fma_dup_f16(ptr noalias nocapture noundef readonly %A, half noundef %B, ptr noalias nocapture noundef %C, i32 noundef %n) {
5 ; CHECK-LABEL: fma_dup_f16:
6 ; CHECK: // %bb.0: // %entry
7 ; CHECK-NEXT: // kill: def $h0 killed $h0 def $q0
8 ; CHECK-NEXT: cbz w2, .LBB0_8
9 ; CHECK-NEXT: // %bb.1: // %for.body.preheader
10 ; CHECK-NEXT: cmp w2, #15
11 ; CHECK-NEXT: mov w8, w2
12 ; CHECK-NEXT: b.hi .LBB0_3
13 ; CHECK-NEXT: // %bb.2:
14 ; CHECK-NEXT: mov x9, xzr
15 ; CHECK-NEXT: b .LBB0_6
16 ; CHECK-NEXT: .LBB0_3: // %vector.ph
17 ; CHECK-NEXT: and x9, x8, #0xfffffff0
18 ; CHECK-NEXT: add x10, x1, #16
19 ; CHECK-NEXT: add x11, x0, #16
20 ; CHECK-NEXT: mov x12, x9
21 ; CHECK-NEXT: .LBB0_4: // %vector.body
22 ; CHECK-NEXT: // =>This Inner Loop Header: Depth=1
23 ; CHECK-NEXT: ldp q1, q3, [x11, #-16]
24 ; CHECK-NEXT: subs x12, x12, #16
25 ; CHECK-NEXT: ldp q2, q4, [x10, #-16]
26 ; CHECK-NEXT: add x11, x11, #32
27 ; CHECK-NEXT: fmla v2.8h, v1.8h, v0.h[0]
28 ; CHECK-NEXT: fmla v4.8h, v3.8h, v0.h[0]
29 ; CHECK-NEXT: stp q2, q4, [x10, #-16]
30 ; CHECK-NEXT: add x10, x10, #32
31 ; CHECK-NEXT: b.ne .LBB0_4
32 ; CHECK-NEXT: // %bb.5: // %middle.block
33 ; CHECK-NEXT: cmp x9, x8
34 ; CHECK-NEXT: b.eq .LBB0_8
35 ; CHECK-NEXT: .LBB0_6: // %for.body.preheader1
36 ; CHECK-NEXT: lsl x10, x9, #1
37 ; CHECK-NEXT: sub x8, x8, x9
38 ; CHECK-NEXT: add x9, x1, x10
39 ; CHECK-NEXT: add x10, x0, x10
40 ; CHECK-NEXT: .LBB0_7: // %for.body
41 ; CHECK-NEXT: // =>This Inner Loop Header: Depth=1
42 ; CHECK-NEXT: ldr h1, [x10], #2
43 ; CHECK-NEXT: ldr h2, [x9]
44 ; CHECK-NEXT: subs x8, x8, #1
45 ; CHECK-NEXT: fmadd h1, h1, h0, h2
46 ; CHECK-NEXT: str h1, [x9], #2
47 ; CHECK-NEXT: b.ne .LBB0_7
48 ; CHECK-NEXT: .LBB0_8: // %for.cond.cleanup
51 %cmp6.not = icmp eq i32 %n, 0
52 br i1 %cmp6.not, label %for.cond.cleanup, label %for.body.preheader
54 for.body.preheader: ; preds = %entry
55 %wide.trip.count = zext i32 %n to i64
56 %min.iters.check = icmp ult i32 %n, 16
57 br i1 %min.iters.check, label %for.body.preheader14, label %vector.ph
59 vector.ph: ; preds = %for.body.preheader
60 %n.vec = and i64 %wide.trip.count, 4294967280
61 %broadcast.splatinsert = insertelement <8 x half> poison, half %B, i64 0
62 %broadcast.splat = shufflevector <8 x half> %broadcast.splatinsert, <8 x half> poison, <8 x i32> zeroinitializer
63 %broadcast.splatinsert10 = insertelement <8 x half> poison, half %B, i64 0
64 %broadcast.splat11 = shufflevector <8 x half> %broadcast.splatinsert10, <8 x half> poison, <8 x i32> zeroinitializer
67 vector.body: ; preds = %vector.body, %vector.ph
68 %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
69 %0 = getelementptr inbounds half, ptr %A, i64 %index
70 %wide.load = load <8 x half>, ptr %0, align 2
71 %1 = getelementptr inbounds half, ptr %0, i64 8
72 %wide.load9 = load <8 x half>, ptr %1, align 2
73 %2 = fmul fast <8 x half> %wide.load, %broadcast.splat
74 %3 = fmul fast <8 x half> %wide.load9, %broadcast.splat11
75 %4 = getelementptr inbounds half, ptr %C, i64 %index
76 %wide.load12 = load <8 x half>, ptr %4, align 2
77 %5 = getelementptr inbounds half, ptr %4, i64 8
78 %wide.load13 = load <8 x half>, ptr %5, align 2
79 %6 = fadd fast <8 x half> %wide.load12, %2
80 %7 = fadd fast <8 x half> %wide.load13, %3
81 store <8 x half> %6, ptr %4, align 2
82 store <8 x half> %7, ptr %5, align 2
83 %index.next = add nuw i64 %index, 16
84 %8 = icmp eq i64 %index.next, %n.vec
85 br i1 %8, label %middle.block, label %vector.body
87 middle.block: ; preds = %vector.body
88 %cmp.n = icmp eq i64 %n.vec, %wide.trip.count
89 br i1 %cmp.n, label %for.cond.cleanup, label %for.body.preheader14
91 for.body.preheader14: ; preds = %for.body.preheader, %middle.block
92 %indvars.iv.ph = phi i64 [ 0, %for.body.preheader ], [ %n.vec, %middle.block ]
95 for.cond.cleanup: ; preds = %for.body, %middle.block, %entry
98 for.body: ; preds = %for.body.preheader14, %for.body
99 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ %indvars.iv.ph, %for.body.preheader14 ]
100 %arrayidx = getelementptr inbounds half, ptr %A, i64 %indvars.iv
101 %9 = load half, ptr %arrayidx, align 2
102 %mul = fmul fast half %9, %B
103 %arrayidx2 = getelementptr inbounds half, ptr %C, i64 %indvars.iv
104 %10 = load half, ptr %arrayidx2, align 2
105 %add = fadd fast half %10, %mul
106 store half %add, ptr %arrayidx2, align 2
107 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
108 %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
109 br i1 %exitcond.not, label %for.cond.cleanup, label %for.body