1 ; RUN: opt < %s -basicaa -memcpyopt -S | FileCheck %s 2 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" 5 6 %struct.foo = type { i8, [7 x i8], i32 } 7 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* %foobie, i64 0, i32 0 11 store i8 98, i8* %1, align 4 12 %2 = getelementptr inbounds %struct.foo* %foobie, i64 0, i32 1, i64 0 13 %3 = getelementptr inbounds [7 x i8]* %bletch.sroa.1, i64 0, i64 0 14 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %2, i8* %3, i64 7, i32 1, i1 false) 15 %4 = getelementptr inbounds %struct.foo* %foobie, i64 0, i32 2 16 store i32 20, i32* %4, align 4 17 ret i32 undef 18 19 ; Check that the memcpy is removed. 20 ; CHECK-LABEL: @test1( 21 ; CHECK-NOT: call void @llvm.memcpy 22 } 23 24 define void @test2(i8* sret noalias nocapture %out, i8* %in) nounwind noinline ssp uwtable { 25 call void @llvm.lifetime.start(i64 8, i8* %in) 26 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %out, i8* %in, i64 8, i32 1, i1 false) 27 ret void 28 29 ; Check that the memcpy is removed. 30 ; CHECK-LABEL: @test2( 31 ; CHECK-NOT: call void @llvm.memcpy 32 } 33 34 define void @test3(i8* sret noalias nocapture %out, i8* %in) nounwind noinline ssp uwtable { 35 call void @llvm.lifetime.start(i64 4, i8* %in) 36 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %out, i8* %in, i64 8, i32 1, i1 false) 37 ret void 38 39 ; Check that the memcpy is not removed. 40 ; CHECK-LABEL: @test3( 41 ; CHECK: call void @llvm.memcpy 42 } 43 44 declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind 45 46 declare void @llvm.lifetime.start(i64, i8* nocapture) nounwind 47
