1 ; RUN: opt < %s -basicaa -memcpyopt -S | FileCheck %s
3 target 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-n8:16:32:64-S128"
4 target triple = "x86_64-apple-macosx10.8.0"
6 %struct.foo = type { i8, [7 x i8], i32 }
8 define i32 @test1(%struct.foo* nocapture %foobie) nounwind noinline ssp uwtable {
9 %bletch.sroa.1 = alloca [7 x i8], align 1
10 %1 = getelementptr inbounds %struct.foo, %struct.foo* %foobie, i64 0, i32 0
11 store i8 98, i8* %1, align 4
12 %2 = getelementptr inbounds %struct.foo, %struct.foo* %foobie, i64 0, i32 1, i64 0
13 %3 = getelementptr inbounds [7 x i8], [7 x i8]* %bletch.sroa.1, i64 0, i64 0
14 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %2, i8* %3, i64 7, i1 false)
15 %4 = getelementptr inbounds %struct.foo, %struct.foo* %foobie, i64 0, i32 2
16 store i32 20, i32* %4, align 4
19 ; Check that the memcpy is removed.
20 ; CHECK-LABEL: @test1(
21 ; CHECK-NOT: call void @llvm.memcpy
24 define void @test2(i8* sret noalias nocapture %out, i8* %in) nounwind noinline ssp uwtable {
25 call void @llvm.lifetime.start.p0i8(i64 8, i8* %in)
26 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %out, i8* %in, i64 8, i1 false)
29 ; Check that the memcpy is removed.
30 ; CHECK-LABEL: @test2(
31 ; CHECK-NOT: call void @llvm.memcpy
34 define void @test3(i8* sret noalias nocapture %out, i8* %in) nounwind noinline ssp uwtable {
35 call void @llvm.lifetime.start.p0i8(i64 4, i8* %in)
36 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %out, i8* %in, i64 8, i1 false)
39 ; Check that the memcpy is not removed.
40 ; CHECK-LABEL: @test3(
41 ; CHECK: call void @llvm.memcpy
44 declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i1) nounwind
46 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) nounwind