1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt -passes=memcpyopt,instcombine -S < %s -verify-memoryssa | FileCheck %s
4 target datalayout = "e-i64:64-f80:128-n8:16:32:64-S128"
5 target triple = "x86_64-unknown-linux-gnu"
7 define void @foo(ptr noalias nocapture sret([8 x i64]) dereferenceable(64) %sret) {
9 ; CHECK-NEXT: entry-block:
10 ; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(64) [[SRET:%.*]], i8 0, i64 64, i1 false)
11 ; CHECK-NEXT: ret void
14 %a = alloca [8 x i64], align 8
15 call void @llvm.lifetime.start.p0(i64 64, ptr %a)
16 call void @llvm.memset.p0.i64(ptr align 8 %a, i8 0, i64 64, i1 false)
17 call void @llvm.memcpy.p0.p0.i64(ptr align 8 %sret, ptr align 8 %a, i64 64, i1 false)
18 call void @llvm.lifetime.end.p0(i64 64, ptr %a)
23 define void @bar(ptr noalias nocapture sret([8 x i64]) dereferenceable(64) %sret, ptr noalias nocapture dereferenceable(64) %out) {
25 ; CHECK-NEXT: entry-block:
26 ; CHECK-NEXT: [[A:%.*]] = alloca [8 x i64], align 8
27 ; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 64, ptr nonnull [[A]])
28 ; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(64) [[A]], i8 0, i64 64, i1 false)
29 ; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(64) [[SRET:%.*]], i8 0, i64 64, i1 false)
30 ; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(32) [[A]], i8 42, i64 32, i1 false)
31 ; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(64) [[OUT:%.*]], ptr noundef nonnull align 8 dereferenceable(64) [[A]], i64 64, i1 false)
32 ; CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 64, ptr nonnull [[A]])
33 ; CHECK-NEXT: ret void
36 %a = alloca [8 x i64], align 8
37 call void @llvm.lifetime.start.p0(i64 64, ptr %a)
38 call void @llvm.memset.p0.i64(ptr align 8 %a, i8 0, i64 64, i1 false)
39 call void @llvm.memcpy.p0.p0.i64(ptr align 8 %sret, ptr align 8 %a, i64 64, i1 false)
40 call void @llvm.memset.p0.i64(ptr align 8 %a, i8 42, i64 32, i1 false)
41 call void @llvm.memcpy.p0.p0.i64(ptr align 8 %out, ptr align 8 %a, i64 64, i1 false)
42 call void @llvm.lifetime.end.p0(i64 64, ptr %a)
47 declare void @llvm.lifetime.start.p0(i64, ptr nocapture) nounwind
48 declare void @llvm.lifetime.end.p0(i64, ptr nocapture) nounwind
50 declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture readonly, i64, i1) nounwind
51 declare void @llvm.memset.p0.i64(ptr nocapture, i8, i64, i1) nounwind