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
|
; RUN: opt -analyze -scalar-evolution < %s | FileCheck %s
declare void @llvm.experimental.guard(i1, ...)
declare void @llvm.assume(i1)
define void @s_0(i32 %n, i1* %cond) {
; CHECK-LABEL: Classifying expressions for: @s_0
entry:
br label %loop
loop:
%iv = phi i32 [ 0, %entry ], [ %iv.inc, %loop ]
%iv.inc = add i32 %iv, 1
%iv.sext = sext i32 %iv to i64
; CHECK: %iv.sext = sext i32 %iv to i64
; CHECK-NEXT: --> {0,+,1}<nuw><nsw><%loop>
%cmp = icmp slt i32 %iv, %n
call void(i1, ...) @llvm.experimental.guard(i1 %cmp) [ "deopt"() ]
%c = load volatile i1, i1* %cond
br i1 %c, label %loop, label %leave
leave:
ret void
}
define void @s_1(i1* %cond) {
; CHECK-LABEL: Classifying expressions for: @s_1
entry:
br label %loop
loop:
%iv = phi i32 [ 0, %entry ], [ %iv.inc, %loop ]
%iv.inc = add i32 %iv, 3
%iv.sext = sext i32 %iv to i64
; CHECK: %iv.sext = sext i32 %iv to i64
; CHECK-NEXT: --> {0,+,3}<nuw><nsw><%loop>
%cmp = icmp slt i32 %iv, 10000
call void(i1, ...) @llvm.experimental.guard(i1 %cmp) [ "deopt"() ]
%c = load volatile i1, i1* %cond
br i1 %c, label %loop, label %leave
leave:
ret void
}
define void @s_2(i1* %cond) {
; CHECK-LABEL: Classifying expressions for: @s_2
entry:
br label %loop
loop:
%iv = phi i32 [ 0, %entry ], [ %iv.inc, %loop ]
%iv.inc = add i32 %iv, 3
%iv.sext = sext i32 %iv to i64
%cmp = icmp slt i32 %iv, 10000
; CHECK: %iv.sext = sext i32 %iv to i64
; CHECK-NEXT: --> {0,+,3}<nuw><nsw><%loop>
call void @llvm.assume(i1 %cmp)
%c = load volatile i1, i1* %cond
br i1 %c, label %loop, label %leave
leave:
ret void
}
|
