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
|
; These tests have an infinite trip count. We obviously shouldn't remove the
; loops! :)
;
; RUN: llvm-upgrade < %s | llvm-as | opt -indvars -adce -simplifycfg | llvm-dis | grep set | wc -l > %t2
; RUN: llvm-upgrade < %s | llvm-as | llvm-dis | grep set | wc -l > %t1
; RUN: diff %t1 %t2
int %infinite_linear() { ;; test for (i = 1; i != 100; i += 2)
entry:
br label %loop
loop:
%i = phi int [ 1, %entry ], [ %i.next, %loop ]
%i.next = add int %i, 2
%c = setne int %i, 100
br bool %c, label %loop, label %loopexit
loopexit:
ret int %i
}
int %infinite_quadratic() { ;; test for (i = 1; i*i != 63; ++i)
entry:
br label %loop
loop:
%i = phi int [ 1, %entry ], [ %i.next, %loop ]
%isquare = mul int %i, %i
%i.next = add int %i, 1
%c = setne int %isquare, 63
br bool %c, label %loop, label %loopexit
loopexit:
ret int %i
}
|
