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
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3
; RUN: opt -passes='require<profile-summary>,function(codegenprepare)' -mtriple=arm64_32-apple-ios %s -S -o - | FileCheck %s
define void @test_simple_sink(ptr %base, i64 %offset) {
; CHECK-LABEL: define void @test_simple_sink(
; CHECK-SAME: ptr [[BASE:%.*]], i64 [[OFFSET:%.*]]) {
; CHECK-NEXT: [[ADDR:%.*]] = getelementptr i1, ptr [[BASE]], i64 [[OFFSET]]
; CHECK-NEXT: [[TST:%.*]] = load i1, ptr [[ADDR]], align 1
; CHECK-NEXT: br i1 [[TST]], label [[NEXT:%.*]], label [[END:%.*]]
; CHECK: next:
; CHECK-NEXT: [[SUNKADDR:%.*]] = trunc i64 [[OFFSET]] to i32
; CHECK-NEXT: [[SUNKADDR1:%.*]] = getelementptr i8, ptr [[BASE]], i32 [[SUNKADDR]]
; CHECK-NEXT: [[TMP1:%.*]] = load volatile i1, ptr [[SUNKADDR1]], align 1
; CHECK-NEXT: ret void
; CHECK: end:
; CHECK-NEXT: ret void
;
%addr = getelementptr i1, ptr %base, i64 %offset
%tst = load i1, ptr %addr
br i1 %tst, label %next, label %end
next:
load volatile i1, ptr %addr
ret void
end:
ret void
}
define void @test_inbounds_sink(ptr %base, i64 %offset) {
; CHECK-LABEL: define void @test_inbounds_sink(
; CHECK-SAME: ptr [[BASE:%.*]], i64 [[OFFSET:%.*]]) {
; CHECK-NEXT: [[ADDR:%.*]] = getelementptr inbounds i1, ptr [[BASE]], i64 [[OFFSET]]
; CHECK-NEXT: [[TST:%.*]] = load i1, ptr [[ADDR]], align 1
; CHECK-NEXT: br i1 [[TST]], label [[NEXT:%.*]], label [[END:%.*]]
; CHECK: next:
; CHECK-NEXT: [[SUNKADDR:%.*]] = trunc i64 [[OFFSET]] to i32
; CHECK-NEXT: [[SUNKADDR1:%.*]] = getelementptr inbounds i8, ptr [[BASE]], i32 [[SUNKADDR]]
; CHECK-NEXT: [[TMP1:%.*]] = load volatile i1, ptr [[SUNKADDR1]], align 1
; CHECK-NEXT: ret void
; CHECK: end:
; CHECK-NEXT: ret void
;
%addr = getelementptr inbounds i1, ptr %base, i64 %offset
%tst = load i1, ptr %addr
br i1 %tst, label %next, label %end
next:
load volatile i1, ptr %addr
ret void
end:
ret void
}
; No address derived via an add can be guaranteed inbounds
define void @test_add_sink(ptr %base, i64 %offset) {
; CHECK-LABEL: define void @test_add_sink(
; CHECK-SAME: ptr [[BASE:%.*]], i64 [[OFFSET:%.*]]) {
; CHECK-NEXT: [[BASE64:%.*]] = ptrtoint ptr [[BASE]] to i64
; CHECK-NEXT: [[ADDR64:%.*]] = add nuw nsw i64 [[BASE64]], [[OFFSET]]
; CHECK-NEXT: [[ADDR:%.*]] = inttoptr i64 [[ADDR64]] to ptr
; CHECK-NEXT: [[TST:%.*]] = load i1, ptr [[ADDR]], align 1
; CHECK-NEXT: br i1 [[TST]], label [[NEXT:%.*]], label [[END:%.*]]
; CHECK: next:
; CHECK-NEXT: [[TMP1:%.*]] = inttoptr i64 [[ADDR64]] to ptr
; CHECK-NEXT: [[TMP2:%.*]] = load volatile i1, ptr [[TMP1]], align 1
; CHECK-NEXT: ret void
; CHECK: end:
; CHECK-NEXT: ret void
;
%base64 = ptrtoint ptr %base to i64
%addr64 = add nsw nuw i64 %base64, %offset
%addr = inttoptr i64 %addr64 to ptr
%tst = load i1, ptr %addr
br i1 %tst, label %next, label %end
next:
load volatile i1, ptr %addr
ret void
end:
ret void
}
|
