1*9880d681SAndroid Build Coastguard Worker; RUN: opt -basicaa -memcpyopt -instcombine -S < %s | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Workertarget datalayout = "e-i64:64-f80:128-n8:16:32:64-S128" 4*9880d681SAndroid Build Coastguard Workertarget triple = "x86_64-unknown-linux-gnu" 5*9880d681SAndroid Build Coastguard Worker 6*9880d681SAndroid Build Coastguard Workerdefine void @foo([8 x i64]* noalias nocapture sret dereferenceable(64) %sret) { 7*9880d681SAndroid Build Coastguard Workerentry-block: 8*9880d681SAndroid Build Coastguard Worker %a = alloca [8 x i64], align 8 9*9880d681SAndroid Build Coastguard Worker %a.cast = bitcast [8 x i64]* %a to i8* 10*9880d681SAndroid Build Coastguard Worker call void @llvm.lifetime.start(i64 64, i8* %a.cast) 11*9880d681SAndroid Build Coastguard Worker call void @llvm.memset.p0i8.i64(i8* %a.cast, i8 0, i64 64, i32 8, i1 false) 12*9880d681SAndroid Build Coastguard Worker %sret.cast = bitcast [8 x i64]* %sret to i8* 13*9880d681SAndroid Build Coastguard Worker call void @llvm.memcpy.p0i8.p0i8.i64(i8* %sret.cast, i8* %a.cast, i64 64, i32 8, i1 false) 14*9880d681SAndroid Build Coastguard Worker call void @llvm.lifetime.end(i64 64, i8* %a.cast) 15*9880d681SAndroid Build Coastguard Worker ret void 16*9880d681SAndroid Build Coastguard Worker 17*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @foo( 18*9880d681SAndroid Build Coastguard Worker; CHECK: %[[sret_cast:[^=]+]] = bitcast [8 x i64]* %sret to i8* 19*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* %[[sret_cast]], i8 0, i64 64 20*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: call void @llvm.memcpy 21*9880d681SAndroid Build Coastguard Worker; CHECK: ret void 22*9880d681SAndroid Build Coastguard Worker} 23*9880d681SAndroid Build Coastguard Worker 24*9880d681SAndroid Build Coastguard Workerdefine void @bar([8 x i64]* noalias nocapture sret dereferenceable(64) %sret, [8 x i64]* noalias nocapture dereferenceable(64) %out) { 25*9880d681SAndroid Build Coastguard Workerentry-block: 26*9880d681SAndroid Build Coastguard Worker %a = alloca [8 x i64], align 8 27*9880d681SAndroid Build Coastguard Worker %a.cast = bitcast [8 x i64]* %a to i8* 28*9880d681SAndroid Build Coastguard Worker call void @llvm.lifetime.start(i64 64, i8* %a.cast) 29*9880d681SAndroid Build Coastguard Worker call void @llvm.memset.p0i8.i64(i8* %a.cast, i8 0, i64 64, i32 8, i1 false) 30*9880d681SAndroid Build Coastguard Worker %sret.cast = bitcast [8 x i64]* %sret to i8* 31*9880d681SAndroid Build Coastguard Worker call void @llvm.memcpy.p0i8.p0i8.i64(i8* %sret.cast, i8* %a.cast, i64 64, i32 8, i1 false) 32*9880d681SAndroid Build Coastguard Worker call void @llvm.memset.p0i8.i64(i8* %a.cast, i8 42, i64 32, i32 8, i1 false) 33*9880d681SAndroid Build Coastguard Worker %out.cast = bitcast [8 x i64]* %out to i8* 34*9880d681SAndroid Build Coastguard Worker call void @llvm.memcpy.p0i8.p0i8.i64(i8* %out.cast, i8* %a.cast, i64 64, i32 8, i1 false) 35*9880d681SAndroid Build Coastguard Worker call void @llvm.lifetime.end(i64 64, i8* %a.cast) 36*9880d681SAndroid Build Coastguard Worker ret void 37*9880d681SAndroid Build Coastguard Worker 38*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @bar( 39*9880d681SAndroid Build Coastguard Worker; CHECK: %[[a:[^=]+]] = alloca [8 x i64] 40*9880d681SAndroid Build Coastguard Worker; CHECK: %[[a_cast:[^=]+]] = bitcast [8 x i64]* %[[a]] to i8* 41*9880d681SAndroid Build Coastguard Worker; CHECK: call void @llvm.memset.p0i8.i64(i8* %[[a_cast]], i8 0, i64 64 42*9880d681SAndroid Build Coastguard Worker; CHECK: %[[sret_cast:[^=]+]] = bitcast [8 x i64]* %sret to i8* 43*9880d681SAndroid Build Coastguard Worker; CHECK: call void @llvm.memset.p0i8.i64(i8* %[[sret_cast]], i8 0, i64 64 44*9880d681SAndroid Build Coastguard Worker; CHECK: call void @llvm.memset.p0i8.i64(i8* %[[a_cast]], i8 42, i64 32 45*9880d681SAndroid Build Coastguard Worker; CHECK: %[[out_cast:[^=]+]] = bitcast [8 x i64]* %out to i8* 46*9880d681SAndroid Build Coastguard Worker; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %[[out_cast]], i8* %[[a_cast]], i64 64 47*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: call void @llvm.memcpy 48*9880d681SAndroid Build Coastguard Worker; CHECK: ret void 49*9880d681SAndroid Build Coastguard Worker} 50*9880d681SAndroid Build Coastguard Worker 51*9880d681SAndroid Build Coastguard Workerdeclare void @llvm.lifetime.start(i64, i8* nocapture) nounwind 52*9880d681SAndroid Build Coastguard Workerdeclare void @llvm.lifetime.end(i64, i8* nocapture) nounwind 53*9880d681SAndroid Build Coastguard Worker 54*9880d681SAndroid Build Coastguard Workerdeclare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1) nounwind 55*9880d681SAndroid Build Coastguard Workerdeclare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind 56