replace-srem-by-urem.ll
3.1 KB
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
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
; RUN: opt < %s -indvars -S | FileCheck %s
define void @test0(i32* %a) {
; CHECK-LABEL: @test0(
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%i.01 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
%rem = srem i32 %i.01, 2
; CHECK-NOT: srem
; CHECK: urem
%idxprom = sext i32 %rem to i64
%arrayidx = getelementptr inbounds i32, i32* %a, i64 %idxprom
store i32 %i.01, i32* %arrayidx, align 4
%inc = add nsw i32 %i.01, 1
%cmp = icmp slt i32 %inc, 64
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body
ret void
}
define void @test2(i32* %a, i32 %d) {
; CHECK-LABEL: @test2(
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%i.01 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
%mul = mul nsw i32 %i.01, 64
%rem = srem i32 %mul, %d
; CHECK-NOT: urem
%idxprom = sext i32 %rem to i64
%arrayidx = getelementptr inbounds i32, i32* %a, i64 %idxprom
store i32 %i.01, i32* %arrayidx, align 4
%inc = add nsw i32 %i.01, 1
%cmp = icmp slt i32 %inc, 64
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body
ret void
}
define void @test3(i32* %a) {
; CHECK-LABEL: @test3(
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%i.01 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
%rem = srem i32 2048, %i.01
; CHECK: urem
; CHECK-NOT: srem
%idxprom = sext i32 %rem to i64
%arrayidx = getelementptr inbounds i32, i32* %a, i64 %idxprom
store i32 %i.01, i32* %arrayidx, align 4
%inc = add nsw i32 %i.01, 1
%cmp = icmp slt i32 %inc, 64
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body
ret void
}
define void @test4(i32* %a) {
; CHECK-LABEL: @test4(
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%i.01 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
%mul = mul nsw i32 %i.01, 64
%rem = srem i32 %mul, 7
; CHECK: urem
; CHECK-NOT: srem
%idxprom = sext i32 %rem to i64
%arrayidx = getelementptr inbounds i32, i32* %a, i64 %idxprom
store i32 %i.01, i32* %arrayidx, align 4
%inc = add nsw i32 %i.01, 1
%cmp = icmp slt i32 %inc, 64
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body
ret void
}
define void @test5(i32* %a) {
; CHECK-LABEL: @test5(
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%i.01 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
%mul = mul nsw i32 %i.01, 64
%rem = srem i32 %mul, 6
; CHECK: urem
; CHECK-NOT: srem
%idxprom = sext i32 %rem to i64
%arrayidx = getelementptr inbounds i32, i32* %a, i64 %idxprom
store i32 %i.01, i32* %arrayidx, align 4
%inc = add nsw i32 %i.01, 1
%cmp = icmp slt i32 %inc, 64
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body
ret void
}