1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
; REQUIRES: asserts
; RUN: opt < %s -passes=loop-vectorize -debug -disable-output -force-ordered-reductions=true -hints-allow-reordering=false \
; RUN: -prefer-predicate-over-epilogue=scalar-epilogue -force-vector-interleave=1 -S 2>&1 | FileCheck %s
; RUN: opt < %s -passes=loop-vectorize -debug -disable-output -force-ordered-reductions=true -hints-allow-reordering=false \
; RUN: -prefer-predicate-over-epilogue=scalar-epilogue -force-vector-interleave=1 \
; RUN: -mcpu=neoverse-n2 -S 2>&1 | FileCheck %s --check-prefix=CHECK-CPU-NEOVERSE-N2
target triple="aarch64-unknown-linux-gnu"
; CHECK: Found an estimated cost of 4 for VF vscale x 2 For instruction: %add = fadd float %0, %sum.07
; CHECK: Found an estimated cost of 8 for VF vscale x 4 For instruction: %add = fadd float %0, %sum.07
; CHECK-CPU-NEOVERSE-N2: Found an estimated cost of 2 for VF vscale x 2 For instruction: %add = fadd float %0, %sum.07
; CHECK-CPU-NEOVERSE-N2: Found an estimated cost of 4 for VF vscale x 4 For instruction: %add = fadd float %0, %sum.07
define float @fadd_strict32(ptr noalias nocapture readonly %a, i64 %n) #0 {
entry:
br label %for.body
for.body:
%iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
%sum.07 = phi float [ 0.000000e+00, %entry ], [ %add, %for.body ]
%arrayidx = getelementptr inbounds float, ptr %a, i64 %iv
%0 = load float, ptr %arrayidx, align 4
%add = fadd float %0, %sum.07
%iv.next = add nuw nsw i64 %iv, 1
%exitcond.not = icmp eq i64 %iv.next, %n
br i1 %exitcond.not, label %for.end, label %for.body, !llvm.loop !0
for.end:
ret float %add
}
; CHECK: Found an estimated cost of 4 for VF vscale x 2 For instruction: %add = fadd double %0, %sum.07
; CHECK-CPU-NEOVERSE-N2: Found an estimated cost of 2 for VF vscale x 2 For instruction: %add = fadd double %0, %sum.07
define double @fadd_strict64(ptr noalias nocapture readonly %a, i64 %n) #0 {
entry:
br label %for.body
for.body:
%iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
%sum.07 = phi double [ 0.000000e+00, %entry ], [ %add, %for.body ]
%arrayidx = getelementptr inbounds double, ptr %a, i64 %iv
%0 = load double, ptr %arrayidx, align 4
%add = fadd double %0, %sum.07
%iv.next = add nuw nsw i64 %iv, 1
%exitcond.not = icmp eq i64 %iv.next, %n
br i1 %exitcond.not, label %for.end, label %for.body, !llvm.loop !0
for.end:
ret double %add
}
attributes #0 = { "target-features"="+sve" vscale_range(1, 16) }
!0 = distinct !{!0, !1}
!1 = !{!"llvm.loop.vectorize.scalable.enable", i1 true}
|
