1*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -basicaa -memcpyopt -S | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker; These memmoves should get optimized to memcpys. 3*9880d681SAndroid Build Coastguard Worker 4*9880d681SAndroid Build Coastguard Workertarget 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" 5*9880d681SAndroid Build Coastguard Workertarget triple = "x86_64-apple-darwin9.0" 6*9880d681SAndroid Build Coastguard Worker 7*9880d681SAndroid Build Coastguard Workerdeclare void @llvm.memmove.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind 8*9880d681SAndroid Build Coastguard Worker 9*9880d681SAndroid Build Coastguard Workerdefine i8* @test1(i8* nocapture %src) nounwind { 10*9880d681SAndroid Build Coastguard Workerentry: 11*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @test1( 12*9880d681SAndroid Build Coastguard Worker; CHECK: call void @llvm.memcpy 13*9880d681SAndroid Build Coastguard Worker 14*9880d681SAndroid Build Coastguard Worker %malloccall = tail call i8* @malloc(i32 trunc (i64 mul nuw (i64 ptrtoint (i8* getelementptr (i8, i8* null, i32 1) to i64), i64 13) to i32)) 15*9880d681SAndroid Build Coastguard Worker %call3 = bitcast i8* %malloccall to [13 x i8]* 16*9880d681SAndroid Build Coastguard Worker %call3.sub = getelementptr inbounds [13 x i8], [13 x i8]* %call3, i64 0, i64 0 17*9880d681SAndroid Build Coastguard Worker tail call void @llvm.memmove.p0i8.p0i8.i64(i8* %call3.sub, i8* %src, i64 13, i32 1, i1 false) 18*9880d681SAndroid Build Coastguard Worker ret i8* %call3.sub 19*9880d681SAndroid Build Coastguard Worker} 20*9880d681SAndroid Build Coastguard Workerdeclare noalias i8* @malloc(i32) 21*9880d681SAndroid Build Coastguard Worker 22*9880d681SAndroid Build Coastguard Worker 23*9880d681SAndroid Build Coastguard Workerdefine void @test2(i8* %P) nounwind { 24*9880d681SAndroid Build Coastguard Workerentry: 25*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @test2( 26*9880d681SAndroid Build Coastguard Worker; CHECK: call void @llvm.memcpy 27*9880d681SAndroid Build Coastguard Worker %add.ptr = getelementptr i8, i8* %P, i64 16 28*9880d681SAndroid Build Coastguard Worker tail call void @llvm.memmove.p0i8.p0i8.i64(i8* %P, i8* %add.ptr, i64 16, i32 1, i1 false) 29*9880d681SAndroid Build Coastguard Worker ret void 30*9880d681SAndroid Build Coastguard Worker} 31*9880d681SAndroid Build Coastguard Worker 32*9880d681SAndroid Build Coastguard Worker; This cannot be optimize because the src/dst really do overlap. 33*9880d681SAndroid Build Coastguard Workerdefine void @test3(i8* %P) nounwind { 34*9880d681SAndroid Build Coastguard Workerentry: 35*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @test3( 36*9880d681SAndroid Build Coastguard Worker; CHECK: call void @llvm.memmove 37*9880d681SAndroid Build Coastguard Worker %add.ptr = getelementptr i8, i8* %P, i64 16 38*9880d681SAndroid Build Coastguard Worker tail call void @llvm.memmove.p0i8.p0i8.i64(i8* %P, i8* %add.ptr, i64 17, i32 1, i1 false) 39*9880d681SAndroid Build Coastguard Worker ret void 40*9880d681SAndroid Build Coastguard Worker} 41