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
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
; RUN: opt < %s -S -loop-unroll -mcpu=nehalem -x86-use-partial-unrolling=1 | FileCheck %s
; RUN: opt < %s -S -loop-unroll -mcpu=core -x86-use-partial-unrolling=1 | FileCheck -check-prefix=CHECK-NOUNRL %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
define void @foo(i32* noalias nocapture readnone %ip, double %alpha, double* noalias nocapture %a, double* noalias nocapture readonly %b) #0 {
entry:
br label %vector.body
vector.body: ; preds = %vector.body, %entry
%index = phi i64 [ 0, %entry ], [ %index.next, %vector.body ]
%0 = getelementptr inbounds double* %b, i64 %index
%1 = bitcast double* %0 to <2 x double>*
%wide.load = load <2 x double>* %1, align 8
%.sum9 = or i64 %index, 2
%2 = getelementptr double* %b, i64 %.sum9
%3 = bitcast double* %2 to <2 x double>*
%wide.load8 = load <2 x double>* %3, align 8
%4 = fadd <2 x double> %wide.load, <double 1.000000e+00, double 1.000000e+00>
%5 = fadd <2 x double> %wide.load8, <double 1.000000e+00, double 1.000000e+00>
%6 = getelementptr inbounds double* %a, i64 %index
%7 = bitcast double* %6 to <2 x double>*
store <2 x double> %4, <2 x double>* %7, align 8
%.sum10 = or i64 %index, 2
%8 = getelementptr double* %a, i64 %.sum10
%9 = bitcast double* %8 to <2 x double>*
store <2 x double> %5, <2 x double>* %9, align 8
%index.next = add i64 %index, 4
%10 = icmp eq i64 %index.next, 1600
br i1 %10, label %for.end, label %vector.body
; FIXME: We should probably unroll this loop by a factor of 2, but the cost
; model needs to be fixed to account for instructions likely to be folded
; as part of an addressing mode.
; CHECK-LABEL: @foo
; CHECK-NOUNRL-LABEL: @foo
for.end: ; preds = %vector.body
ret void
}
define void @bar(i32* noalias nocapture readnone %ip, double %alpha, double* noalias nocapture %a, double* noalias nocapture readonly %b) #0 {
entry:
br label %vector.body
vector.body: ; preds = %vector.body, %entry
%index = phi i64 [ 0, %entry ], [ %index.next, %vector.body ]
%v0 = getelementptr inbounds double* %b, i64 %index
%v1 = bitcast double* %v0 to <2 x double>*
%wide.load = load <2 x double>* %v1, align 8
%v4 = fadd <2 x double> %wide.load, <double 1.000000e+00, double 1.000000e+00>
%v5 = fmul <2 x double> %v4, <double 8.000000e+00, double 8.000000e+00>
%v6 = getelementptr inbounds double* %a, i64 %index
%v7 = bitcast double* %v6 to <2 x double>*
store <2 x double> %v5, <2 x double>* %v7, align 8
%index.next = add i64 %index, 2
%v10 = icmp eq i64 %index.next, 1600
br i1 %v10, label %for.end, label %vector.body
; FIXME: We should probably unroll this loop by a factor of 2, but the cost
; model needs to first to fixed to account for instructions likely to be folded
; as part of an addressing mode.
; CHECK-LABEL: @bar
; CHECK: fadd
; CHECK-NEXT: fmul
; CHECK: fadd
; CHECK-NEXT: fmul
; CHECK-NOUNRL-LABEL: @bar
; CHECK-NOUNRL: fadd
; CHECK-NOUNRL-NEXT: fmul
; CHECK-NOUNRL-NOT: fadd
for.end: ; preds = %vector.body
ret void
}
attributes #0 = { nounwind uwtable }
|
