1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt < %s -basic-aa -memcpyopt -S | FileCheck %s
3; These memmoves should get optimized to memcpys.
4
5target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
6target triple = "x86_64-apple-darwin9.0"
7
8declare void @llvm.memmove.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i1) nounwind
9
10define i8* @test1(i8* nocapture %src) nounwind {
11; CHECK-LABEL: @test1(
12; CHECK-NEXT:  entry:
13; CHECK-NEXT:    [[MALLOCCALL:%.*]] = tail call i8* @malloc(i32 trunc (i64 mul nuw (i64 ptrtoint (i8* getelementptr (i8, i8* null, i32 1) to i64), i64 13) to i32))
14; CHECK-NEXT:    [[CALL3:%.*]] = bitcast i8* [[MALLOCCALL]] to [13 x i8]*
15; CHECK-NEXT:    [[CALL3_SUB:%.*]] = getelementptr inbounds [13 x i8], [13 x i8]* [[CALL3]], i64 0, i64 0
16; CHECK-NEXT:    tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[CALL3_SUB]], i8* [[SRC:%.*]], i64 13, i1 false)
17; CHECK-NEXT:    ret i8* [[CALL3_SUB]]
18;
19entry:
20
21  %malloccall = tail call i8* @malloc(i32 trunc (i64 mul nuw (i64 ptrtoint (i8* getelementptr (i8, i8* null, i32 1) to i64), i64 13) to i32))
22  %call3 = bitcast i8* %malloccall to [13 x i8]*
23  %call3.sub = getelementptr inbounds [13 x i8], [13 x i8]* %call3, i64 0, i64 0
24  tail call void @llvm.memmove.p0i8.p0i8.i64(i8* %call3.sub, i8* %src, i64 13, i1 false)
25  ret i8* %call3.sub
26}
27declare noalias i8* @malloc(i32)
28
29
30define void @test2(i8* %P) nounwind {
31; CHECK-LABEL: @test2(
32; CHECK-NEXT:  entry:
33; CHECK-NEXT:    [[ADD_PTR:%.*]] = getelementptr i8, i8* [[P:%.*]], i64 16
34; CHECK-NEXT:    tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[P]], i8* [[ADD_PTR]], i64 16, i1 false)
35; CHECK-NEXT:    ret void
36;
37entry:
38  %add.ptr = getelementptr i8, i8* %P, i64 16
39  tail call void @llvm.memmove.p0i8.p0i8.i64(i8* %P, i8* %add.ptr, i64 16, i1 false)
40  ret void
41}
42
43; This cannot be optimize because the src/dst really do overlap.
44define void @test3(i8* %P) nounwind {
45; CHECK-LABEL: @test3(
46; CHECK-NEXT:  entry:
47; CHECK-NEXT:    [[ADD_PTR:%.*]] = getelementptr i8, i8* [[P:%.*]], i64 16
48; CHECK-NEXT:    tail call void @llvm.memmove.p0i8.p0i8.i64(i8* [[P]], i8* [[ADD_PTR]], i64 17, i1 false)
49; CHECK-NEXT:    ret void
50;
51entry:
52  %add.ptr = getelementptr i8, i8* %P, i64 16
53  tail call void @llvm.memmove.p0i8.p0i8.i64(i8* %P, i8* %add.ptr, i64 17, i1 false)
54  ret void
55}
56