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
| ; RUN: opt %loadPolly -polly-optree -analyze < %s | FileCheck %s -match-full-lines
;
; Not the entire operand tree can be forwarded,
; some scalar dependencies would remain.
;
; for (int j = 0; j < n; j += 1) {
; bodyA:
; double val = f() + 21.0;
;
; bodyB:
; A[0] = val;
; }
;
declare double @f(...) #1
define void @func(i32 %n, double* noalias nonnull %A) {
entry:
br label %for
for:
%j = phi i32 [0, %entry], [%j.inc, %inc]
%j.cmp = icmp slt i32 %j, %n
br i1 %j.cmp, label %bodyA, label %exit
bodyA:
%v = call double (...) @f()
%val = fadd double %v, 21.0
br label %bodyB
bodyB:
store double %val, double* %A
br label %inc
inc:
%j.inc = add nuw nsw i32 %j, 1
br label %for
exit:
br label %return
return:
ret void
}
attributes #1 = { nounwind readnone }
; CHECK: ForwardOpTree executed, but did not modify anything
|