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
|
; RUN: opt < %s -analyze -basicaa -da | FileCheck %s
; ModuleID = 'ZIV.bc'
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.6.0"
;; A[n + 1] = 0;
;; *B = A[1 + n];
define void @z0(i32* %A, i32* %B, i64 %n) nounwind uwtable ssp {
entry:
%add = add i64 %n, 1
%arrayidx = getelementptr inbounds i32* %A, i64 %add
store i32 0, i32* %arrayidx, align 4
; CHECK: da analyze - none!
; CHECK: da analyze - consistent flow [|<]!
; CHECK: da analyze - confused!
; CHECK: da analyze - none!
; CHECK: da analyze - confused!
; CHECK: da analyze - none!
%add1 = add i64 %n, 1
%arrayidx2 = getelementptr inbounds i32* %A, i64 %add1
%0 = load i32* %arrayidx2, align 4
store i32 %0, i32* %B, align 4
ret void
}
;; A[n] = 0;
;; *B = A[n + 1];
define void @z1(i32* %A, i32* %B, i64 %n) nounwind uwtable ssp {
entry:
%arrayidx = getelementptr inbounds i32* %A, i64 %n
store i32 0, i32* %arrayidx, align 4
; CHECK: da analyze - none!
; CHECK: da analyze - none!
; CHECK: da analyze - confused!
; CHECK: da analyze - none!
; CHECK: da analyze - confused!
; CHECK: da analyze - none!
%add = add i64 %n, 1
%arrayidx1 = getelementptr inbounds i32* %A, i64 %add
%0 = load i32* %arrayidx1, align 4
store i32 %0, i32* %B, align 4
ret void
}
;; A[n] = 0;
;; *B = A[m];
define void @z2(i32* %A, i32* %B, i64 %n, i64 %m) nounwind uwtable ssp {
entry:
%arrayidx = getelementptr inbounds i32* %A, i64 %n
store i32 0, i32* %arrayidx, align 4
; CHECK: da analyze - none!
; CHECK: da analyze - flow [|<]!
; CHECK: da analyze - confused!
; CHECK: da analyze - none!
; CHECK: da analyze - confused!
; CHECK: da analyze - none!
%arrayidx1 = getelementptr inbounds i32* %A, i64 %m
%0 = load i32* %arrayidx1, align 4
store i32 %0, i32* %B, align 4
ret void
}
|
