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gerrit-public.fairphone.software / toolchain / llvm-project / 7216ccc3f34a97ea07354fe0bb61b782d5f1be18 / . / llvm / test / Transforms / MemCpyOpt / memset-memcpy-redundant-memset.ll
blob: cc94f58dbfbd1a9d5364b316d33935ae61da9e94 [file] [log] [blame]
Ahmed Bougacha83f78a42015-04-17 22:20:57 +0000[diff] [blame]1; RUN: opt -memcpyopt -S %s | FileCheck %s
2
3target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
4
5; CHECK-LABEL: define void @test
6; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst, i8* %src, i64 %src_size, i32 1, i1 false)
7; CHECK-DAG: [[DST:%[0-9]+]] = getelementptr i8, i8* %dst, i64 %src_size
8; CHECK-DAG: [[ULE:%[0-9]+]] = icmp ule i64 %dst_size, %src_size
9; CHECK-DAG: [[SIZEDIFF:%[0-9]+]] = sub i64 %dst_size, %src_size
10; CHECK-DAG: [[SIZE:%[0-9]+]] = select i1 [[ULE]], i64 0, i64 [[SIZEDIFF]]
Ahmed Bougacha7216ccc2015-04-18 17:57:41 +0000[diff] [blame^]11; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* [[DST]], i8 %c, i64 [[SIZE]], i32 1, i1 false)
Ahmed Bougacha83f78a42015-04-17 22:20:57 +0000[diff] [blame]12; CHECK-NEXT: ret void
Ahmed Bougacha7216ccc2015-04-18 17:57:41 +0000[diff] [blame^]13define void @test(i8* %src, i64 %src_size, i8* %dst, i64 %dst_size, i8 %c) {
14 call void @llvm.memset.p0i8.i64(i8* %dst, i8 %c, i64 %dst_size, i32 1, i1 false)
Ahmed Bougacha83f78a42015-04-17 22:20:57 +0000[diff] [blame]15 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst, i8* %src, i64 %src_size, i32 1, i1 false)
16 ret void
17}
18
Ahmed Bougacha7216ccc2015-04-18 17:57:41 +0000[diff] [blame^]19; CHECK-LABEL: define void @test_different_types_i32_i64
20; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst, i8* %src, i64 %src_size, i32 1, i1 false)
21; CHECK-DAG: [[DSTSIZE:%[0-9]+]] = zext i32 %dst_size to i64
22; CHECK-DAG: [[DST:%[0-9]+]] = getelementptr i8, i8* %dst, i64 %src_size
23; CHECK-DAG: [[ULE:%[0-9]+]] = icmp ule i64 [[DSTSIZE]], %src_size
24; CHECK-DAG: [[SIZEDIFF:%[0-9]+]] = sub i64 [[DSTSIZE]], %src_size
25; CHECK-DAG: [[SIZE:%[0-9]+]] = select i1 [[ULE]], i64 0, i64 [[SIZEDIFF]]
26; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* [[DST]], i8 %c, i64 [[SIZE]], i32 1, i1 false)
27; CHECK-NEXT: ret void
28define void @test_different_types_i32_i64(i8* %dst, i8* %src, i32 %dst_size, i64 %src_size, i8 %c) {
29 call void @llvm.memset.p0i8.i32(i8* %dst, i8 %c, i32 %dst_size, i32 1, i1 false)
30 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst, i8* %src, i64 %src_size, i32 1, i1 false)
31 ret void
32}
33
34; CHECK-LABEL: define void @test_different_types_i64_i32
35; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dst, i8* %src, i32 %src_size, i32 1, i1 false)
36; CHECK-DAG: [[SRCSIZE:%[0-9]+]] = zext i32 %src_size to i64
37; CHECK-DAG: [[DST:%[0-9]+]] = getelementptr i8, i8* %dst, i64 [[SRCSIZE]]
38; CHECK-DAG: [[ULE:%[0-9]+]] = icmp ule i64 %dst_size, [[SRCSIZE]]
39; CHECK-DAG: [[SIZEDIFF:%[0-9]+]] = sub i64 %dst_size, [[SRCSIZE]]
40; CHECK-DAG: [[SIZE:%[0-9]+]] = select i1 [[ULE]], i64 0, i64 [[SIZEDIFF]]
41; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* [[DST]], i8 %c, i64 [[SIZE]], i32 1, i1 false)
42; CHECK-NEXT: ret void
43define void @test_different_types_i64_i32(i8* %dst, i8* %src, i64 %dst_size, i32 %src_size, i8 %c) {
44 call void @llvm.memset.p0i8.i64(i8* %dst, i8 %c, i64 %dst_size, i32 1, i1 false)
45 call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dst, i8* %src, i32 %src_size, i32 1, i1 false)
46 ret void
47}
48
Ahmed Bougacha83f78a42015-04-17 22:20:57 +0000[diff] [blame]49; CHECK-LABEL: define void @test_align_same
50; CHECK: call void @llvm.memset.p0i8.i64(i8* {{.*}}, i8 0, i64 {{.*}}, i32 8, i1 false)
51define void @test_align_same(i8* %src, i8* %dst, i64 %dst_size) {
52 call void @llvm.memset.p0i8.i64(i8* %dst, i8 0, i64 %dst_size, i32 8, i1 false)
53 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst, i8* %src, i64 80, i32 1, i1 false)
54 ret void
55}
56
57; CHECK-LABEL: define void @test_align_min
58; CHECK: call void @llvm.memset.p0i8.i64(i8* {{.*}}, i8 0, i64 {{.*}}, i32 4, i1 false)
59define void @test_align_min(i8* %src, i8* %dst, i64 %dst_size) {
60 call void @llvm.memset.p0i8.i64(i8* %dst, i8 0, i64 %dst_size, i32 8, i1 false)
61 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst, i8* %src, i64 36, i32 1, i1 false)
62 ret void
63}
64
65; CHECK-LABEL: define void @test_align_memcpy
66; CHECK: call void @llvm.memset.p0i8.i64(i8* {{.*}}, i8 0, i64 {{.*}}, i32 8, i1 false)
67define void @test_align_memcpy(i8* %src, i8* %dst, i64 %dst_size) {
68 call void @llvm.memset.p0i8.i64(i8* %dst, i8 0, i64 %dst_size, i32 1, i1 false)
69 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst, i8* %src, i64 80, i32 8, i1 false)
70 ret void
71}
72
73; CHECK-LABEL: define void @test_different_dst
74; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* %dst, i8 0, i64 %dst_size, i32 1, i1 false)
75; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst2, i8* %src, i64 %src_size, i32 1, i1 false)
76; CHECK-NEXT: ret void
77define void @test_different_dst(i8* %dst2, i8* %src, i64 %src_size, i8* %dst, i64 %dst_size) {
78 call void @llvm.memset.p0i8.i64(i8* %dst, i8 0, i64 %dst_size, i32 1, i1 false)
79 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst2, i8* %src, i64 %src_size, i32 1, i1 false)
80 ret void
81}
82
83declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1)
84declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1)
Ahmed Bougacha7216ccc2015-04-18 17:57:41 +0000[diff] [blame^]85declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i32, i1)
86declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture readonly, i32, i32, i1)