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
| ; RUN: opt -indvars -loop-vectorize -force-vector-width=2 -force-vector-interleave=1 -S < %s | FileCheck %s
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
; We must not vectorize this loop. %add55 is not reduction. Its value is used
; multiple times.
; PR18526
; CHECK: multiple_use_of_value
; CHECK-NOT: <2 x i32>
define void @multiple_use_of_value() {
entry:
%n = alloca i32, align 4
%k7 = alloca i32, align 4
%nf = alloca i32, align 4
%0 = load i32, i32* %k7, align 4
%.neg1 = sub i32 0, %0
%n.promoted = load i32, i32* %n, align 4
%nf.promoted = load i32, i32* %nf, align 4
br label %for.body
for.body:
%inc107 = phi i32 [ undef, %entry ], [ %inc10, %for.body ]
%inc6 = phi i32 [ %nf.promoted, %entry ], [ undef, %for.body ]
%add55 = phi i32 [ %n.promoted, %entry ], [ %add5, %for.body ]
%.neg2 = sub i32 0, %inc6
%add.neg = add i32 0, %add55
%add4.neg = add i32 %add.neg, %.neg1
%sub = add i32 %add4.neg, %.neg2
%add5 = add i32 %sub, %add55
%inc10 = add i32 %inc107, 1
%cmp = icmp ult i32 %inc10, 61
br i1 %cmp, label %for.body, label %for.end
for.end:
%add5.lcssa = phi i32 [ %add5, %for.body ]
store i32 %add5.lcssa, i32* %n, align 4
ret void
}
|