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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -basic-aa -memcpyopt -instcombine -S < %s -enable-memcpyopt-memoryssa=0 | FileCheck %s
3; RUN: opt -basic-aa -memcpyopt -instcombine -S < %s -enable-memcpyopt-memoryssa=1 -verify-memoryssa | FileCheck %s
4
5target datalayout = "e-i64:64-f80:128-n8:16:32:64-S128"
6target triple = "x86_64-unknown-linux-gnu"
7
8define void @foo([8 x i64]* noalias nocapture sret([8 x i64]) dereferenceable(64) %sret) {
9; CHECK-LABEL: @foo(
10; CHECK-NEXT:  entry-block:
11; CHECK-NEXT:    [[SRET1:%.*]] = bitcast [8 x i64]* [[SRET:%.*]] to i8*
12; CHECK-NEXT:    call void @llvm.memset.p0i8.i64(i8* nonnull align 8 dereferenceable(64) [[SRET1]], i8 0, i64 64, i1 false)
13; CHECK-NEXT:    ret void
14;
15entry-block:
16  %a = alloca [8 x i64], align 8
17  %a.cast = bitcast [8 x i64]* %a to i8*
18  call void @llvm.lifetime.start.p0i8(i64 64, i8* %a.cast)
19  call void @llvm.memset.p0i8.i64(i8* align 8 %a.cast, i8 0, i64 64, i1 false)
20  %sret.cast = bitcast [8 x i64]* %sret to i8*
21  call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 %sret.cast, i8* align 8 %a.cast, i64 64, i1 false)
22  call void @llvm.lifetime.end.p0i8(i64 64, i8* %a.cast)
23  ret void
24
25}
26
27define void @bar([8 x i64]* noalias nocapture sret([8 x i64]) dereferenceable(64) %sret, [8 x i64]* noalias nocapture dereferenceable(64) %out) {
28; CHECK-LABEL: @bar(
29; CHECK-NEXT:  entry-block:
30; CHECK-NEXT:    [[A:%.*]] = alloca [8 x i64], align 8
31; CHECK-NEXT:    [[A_CAST:%.*]] = bitcast [8 x i64]* [[A]] to i8*
32; CHECK-NEXT:    call void @llvm.lifetime.start.p0i8(i64 64, i8* nonnull [[A_CAST]])
33; CHECK-NEXT:    call void @llvm.memset.p0i8.i64(i8* nonnull align 8 dereferenceable(64) [[A_CAST]], i8 0, i64 64, i1 false)
34; CHECK-NEXT:    [[SRET_CAST:%.*]] = bitcast [8 x i64]* [[SRET:%.*]] to i8*
35; CHECK-NEXT:    call void @llvm.memset.p0i8.i64(i8* nonnull align 8 dereferenceable(64) [[SRET_CAST]], i8 0, i64 64, i1 false)
36; CHECK-NEXT:    call void @llvm.memset.p0i8.i64(i8* nonnull align 8 dereferenceable(32) [[A_CAST]], i8 42, i64 32, i1 false)
37; CHECK-NEXT:    [[OUT_CAST:%.*]] = bitcast [8 x i64]* [[OUT:%.*]] to i8*
38; CHECK-NEXT:    call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 8 dereferenceable(64) [[OUT_CAST]], i8* nonnull align 8 dereferenceable(64) [[A_CAST]], i64 64, i1 false)
39; CHECK-NEXT:    call void @llvm.lifetime.end.p0i8(i64 64, i8* nonnull [[A_CAST]])
40; CHECK-NEXT:    ret void
41;
42entry-block:
43  %a = alloca [8 x i64], align 8
44  %a.cast = bitcast [8 x i64]* %a to i8*
45  call void @llvm.lifetime.start.p0i8(i64 64, i8* %a.cast)
46  call void @llvm.memset.p0i8.i64(i8* align 8 %a.cast, i8 0, i64 64, i1 false)
47  %sret.cast = bitcast [8 x i64]* %sret to i8*
48  call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 %sret.cast, i8* align 8 %a.cast, i64 64, i1 false)
49  call void @llvm.memset.p0i8.i64(i8* align 8 %a.cast, i8 42, i64 32, i1 false)
50  %out.cast = bitcast [8 x i64]* %out to i8*
51  call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 %out.cast, i8* align 8 %a.cast, i64 64, i1 false)
52  call void @llvm.lifetime.end.p0i8(i64 64, i8* %a.cast)
53  ret void
54
55}
56
57declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) nounwind
58declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) nounwind
59
60declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i1) nounwind
61declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i1) nounwind
62