| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -S -passes=memcpyopt < %s | FileCheck %s |
| |
| declare void @func(ptr %dst) |
| |
| ; The noalias metadata from the call, the load and the store should be merged, |
| ; so that no metadata is left on the call. |
| define i8 @test(ptr dereferenceable(1) noalias %dst) { |
| ; CHECK-LABEL: @test( |
| ; CHECK-NEXT: [[TMP:%.*]] = alloca i8, align 1 |
| ; CHECK-NEXT: call void @func(ptr nocapture [[DST:%.*]]) #[[ATTR0:[0-9]+]]{{$}} |
| ; CHECK-NEXT: [[V2:%.*]] = load i8, ptr [[DST]], align 1, !alias.scope !0 |
| ; CHECK-NEXT: ret i8 [[V2]] |
| ; |
| %tmp = alloca i8 |
| call void @func(ptr nocapture %tmp) nounwind, !noalias !0 |
| %v = load i8, ptr %tmp, !noalias !0 |
| store i8 %v, ptr %dst, !alias.scope !0 |
| %v2 = load i8, ptr %dst, !alias.scope !0 |
| ret i8 %v2 |
| } |
| |
| !0 = !{!1} |
| !1 = !{!1, !2} |
| !2 = !{!2} |
| |
