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
| ; RUN: opt -memcpyopt -S %s | FileCheck %s
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
; CHECK-LABEL: define void @test(
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* %dst1, i8 %c, i64 128, i1 false)
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 8 %dst2, i8 %c, i64 128, i1 false)
; CHECK-NEXT: ret void
define void @test(i8* %dst1, i8* %dst2, i8 %c) {
call void @llvm.memset.p0i8.i64(i8* %dst1, i8 %c, i64 128, i1 false)
call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 %dst2, i8* align 8 %dst1, i64 128, i1 false)
ret void
}
; CHECK-LABEL: define void @test_smaller_memcpy(
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* %dst1, i8 %c, i64 128, i1 false)
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* %dst2, i8 %c, i64 100, i1 false)
; CHECK-NEXT: ret void
define void @test_smaller_memcpy(i8* %dst1, i8* %dst2, i8 %c) {
call void @llvm.memset.p0i8.i64(i8* %dst1, i8 %c, i64 128, i1 false)
call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst2, i8* %dst1, i64 100, i1 false)
ret void
}
; CHECK-LABEL: define void @test_smaller_memset(
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* %dst1, i8 %c, i64 100, i1 false)
; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst2, i8* %dst1, i64 128, i1 false)
; CHECK-NEXT: ret void
define void @test_smaller_memset(i8* %dst1, i8* %dst2, i8 %c) {
call void @llvm.memset.p0i8.i64(i8* %dst1, i8 %c, i64 100, i1 false)
call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst2, i8* %dst1, i64 128, i1 false)
ret void
}
; CHECK-LABEL: define void @test_align_memset(
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 8 %dst1, i8 %c, i64 128, i1 false)
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* %dst2, i8 %c, i64 128, i1 false)
; CHECK-NEXT: ret void
define void @test_align_memset(i8* %dst1, i8* %dst2, i8 %c) {
call void @llvm.memset.p0i8.i64(i8* align 8 %dst1, i8 %c, i64 128, i1 false)
call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst2, i8* %dst1, i64 128, i1 false)
ret void
}
; CHECK-LABEL: define void @test_different_types(
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 8 %dst1, i8 %c, i64 128, i1 false)
; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* %dst2, i8 %c, i32 100, i1 false)
; CHECK-NEXT: ret void
define void @test_different_types(i8* %dst1, i8* %dst2, i8 %c) {
call void @llvm.memset.p0i8.i64(i8* align 8 %dst1, i8 %c, i64 128, i1 false)
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dst2, i8* %dst1, i32 100, i1 false)
ret void
}
; CHECK-LABEL: define void @test_different_types_2(
; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* align 8 %dst1, i8 %c, i32 128, i1 false)
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* %dst2, i8 %c, i64 100, i1 false)
; CHECK-NEXT: ret void
define void @test_different_types_2(i8* %dst1, i8* %dst2, i8 %c) {
call void @llvm.memset.p0i8.i32(i8* align 8 %dst1, i8 %c, i32 128, i1 false)
call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst2, i8* %dst1, i64 100, i1 false)
ret void
}
; CHECK-LABEL: define void @test_different_source_gep(
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* %dst1, i8 %c, i64 128, i1 false)
; CHECK-NEXT: %p = getelementptr i8, i8* %dst1, i64 64
; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst2, i8* %p, i64 64, i1 false)
; CHECK-NEXT: ret void
define void @test_different_source_gep(i8* %dst1, i8* %dst2, i8 %c) {
call void @llvm.memset.p0i8.i64(i8* %dst1, i8 %c, i64 128, i1 false)
; FIXME: We could optimize this as well.
%p = getelementptr i8, i8* %dst1, i64 64
call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst2, i8* %p, i64 64, i1 false)
ret void
}
; CHECK-LABEL: define void @test_variable_size_1(
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* %dst1, i8 %c, i64 %dst1_size, i1 false)
; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst2, i8* %dst1, i64 128, i1 false)
; CHECK-NEXT: ret void
define void @test_variable_size_1(i8* %dst1, i64 %dst1_size, i8* %dst2, i8 %c) {
call void @llvm.memset.p0i8.i64(i8* %dst1, i8 %c, i64 %dst1_size, i1 false)
call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst2, i8* %dst1, i64 128, i1 false)
ret void
}
; CHECK-LABEL: define void @test_variable_size_2(
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* %dst1, i8 %c, i64 128, i1 false)
; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst2, i8* %dst1, i64 %dst2_size, i1 false)
; CHECK-NEXT: ret void
define void @test_variable_size_2(i8* %dst1, i8* %dst2, i64 %dst2_size, i8 %c) {
call void @llvm.memset.p0i8.i64(i8* %dst1, i8 %c, i64 128, i1 false)
call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst2, i8* %dst1, i64 %dst2_size, i1 false)
ret void
}
declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i1)
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i1)
declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i1)
declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture readonly, i32, i1)
|