switch-in-non-affine-region.ll
2.42 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
; RUN: opt %loadPolly \
; RUN: -S -polly-codegen < %s | FileCheck %s
;
; void f(int *A, int N) {
; for (int i = 0; i < N; i++)
; if (A[i])
; switch (i % 4) {
; case 0:
; A[i] += 1;
; break;
; case 1:
; A[i] += 2;
; break;
; }
; }
;
; CHECK: polly.stmt.if.then:
; CHECK: %1 = trunc i64 %polly.indvar to i32
; CHECK: %p_rem = srem i32 %1, 4
; CHECK: switch i32 %p_rem, label %polly.stmt.sw.epilog [
; CHECK: i32 0, label %polly.stmt.sw.bb
; CHECK: i32 1, label %polly.stmt.sw.bb.3
; CHECK: ]
;
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @f(i32* %A, i32 %N) {
entry:
%tmp = sext i32 %N to i64
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
%cmp = icmp slt i64 %indvars.iv, %tmp
br i1 %cmp, label %for.body, label %for.end
for.body: ; preds = %for.cond
%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
%tmp1 = load i32, i32* %arrayidx, align 4
%tobool = icmp eq i32 %tmp1, 0
br i1 %tobool, label %if.end, label %if.then
if.then: ; preds = %for.body
%tmp2 = trunc i64 %indvars.iv to i32
%rem = srem i32 %tmp2, 4
switch i32 %rem, label %sw.epilog [
i32 0, label %sw.bb
i32 1, label %sw.bb.3
]
sw.bb: ; preds = %if.then
%arrayidx2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
%tmp3 = load i32, i32* %arrayidx2, align 4
%add = add nsw i32 %tmp3, 1
store i32 %add, i32* %arrayidx2, align 4
br label %sw.epilog
sw.bb.3: ; preds = %if.then
%arrayidx5 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
%tmp4 = load i32, i32* %arrayidx5, align 4
%add6 = add nsw i32 %tmp4, 2
store i32 %add6, i32* %arrayidx5, align 4
br label %sw.epilog
sw.epilog: ; preds = %sw.bb.3, %sw.bb, %if.then
br label %if.end
if.end: ; preds = %for.body, %sw.epilog
br label %for.inc
for.inc: ; preds = %if.end
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
br label %for.cond
for.end: ; preds = %for.cond
ret void
}