1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -memcpyopt -instcombine -S %s -enable-memcpyopt-memoryssa=0 | FileCheck %s
3; RUN: opt -memcpyopt -instcombine -S %s -enable-memcpyopt-memoryssa=1 -verify-memoryssa | FileCheck %s
4%Foo = type { [2048 x i64] }
5
6; Make sure that all mempcy calls are converted to memset calls, or removed.
7define void @baz() unnamed_addr #0 {
8; CHECK-LABEL: @baz(
9; CHECK-NEXT:  entry-block:
10; CHECK-NEXT:    [[TMP2:%.*]] = alloca [[FOO:%.*]], align 8
11; CHECK-NEXT:    [[TMP0:%.*]] = bitcast %Foo* [[TMP2]] to i8*
12; CHECK-NEXT:    call void @llvm.lifetime.start.p0i8(i64 16384, i8* nonnull [[TMP0]])
13; CHECK-NEXT:    call void @llvm.memset.p0i8.i64(i8* nonnull align 8 dereferenceable(16384) [[TMP0]], i8 0, i64 16384, i1 false)
14; CHECK-NEXT:    call void @bar(%Foo* noalias nocapture nonnull dereferenceable(16384) [[TMP2]])
15; CHECK-NEXT:    call void @llvm.lifetime.end.p0i8(i64 16384, i8* nonnull [[TMP0]])
16; CHECK-NEXT:    ret void
17;
18entry-block:
19  %x.sroa.0 = alloca [2048 x i64], align 8
20  %tmp0 = alloca [2048 x i64], align 8
21  %0 = bitcast [2048 x i64]* %tmp0 to i8*
22  %tmp2 = alloca %Foo, align 8
23  %x.sroa.0.0..sroa_cast6 = bitcast [2048 x i64]* %x.sroa.0 to i8*
24  call void @llvm.lifetime.start.p0i8(i64 16384, i8* %x.sroa.0.0..sroa_cast6)
25  call void @llvm.lifetime.start.p0i8(i64 16384, i8* %0)
26  call void @llvm.memset.p0i8.i64(i8* align 8 %0, i8 0, i64 16384, i1 false)
27  call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 %x.sroa.0.0..sroa_cast6, i8* align 8 %0, i64 16384, i1 false)
28  call void @llvm.lifetime.end.p0i8(i64 16384, i8* %0)
29  %1 = bitcast %Foo* %tmp2 to i8*
30  call void @llvm.lifetime.start.p0i8(i64 16384, i8* %1)
31  call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 %1, i8* align 8 %x.sroa.0.0..sroa_cast6, i64 16384, i1 false)
32  call void @bar(%Foo* noalias nocapture nonnull dereferenceable(16384) %tmp2)
33  call void @llvm.lifetime.end.p0i8(i64 16384, i8* %1)
34  call void @llvm.lifetime.end.p0i8(i64 16384, i8* %x.sroa.0.0..sroa_cast6)
35  ret void
36}
37
38declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
39
40declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i1) #1
41
42declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1
43
44declare void @bar(%Foo* noalias nocapture readonly dereferenceable(16384)) unnamed_addr #0
45
46declare void @llvm.memset.p0i8.i64(i8* nocapture writeonly, i8, i64, i1) #1
47
48attributes #0 = { uwtable }
49attributes #1 = { argmemonly nounwind }
50