1 ; RUN: opt < %s -basicaa -memcpyopt -S | FileCheck %s
2 ; These memmoves should get optimized to memcpys.
4 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"
5 target triple = "x86_64-apple-darwin9.0"
7 declare void @llvm.memmove.i64(i8* nocapture, i8* nocapture, i64, i32) nounwind
9 define i8* @test1(i8* nocapture %src) nounwind {
12 ; CHECK: call void @llvm.memcpy
14 %call3 = malloc [13 x i8] ; <[13 x i8]*> [#uses=1]
15 %call3.sub = getelementptr inbounds [13 x i8]* %call3, i64 0, i64 0 ; <i8*> [#uses=2]
16 tail call void @llvm.memmove.i64(i8* %call3.sub, i8* %src, i64 13, i32 1)
20 define void @test2(i8* %P) nounwind {
23 ; CHECK: call void @llvm.memcpy
24 %add.ptr = getelementptr i8* %P, i64 16 ; <i8*> [#uses=1]
25 tail call void @llvm.memmove.i64(i8* %P, i8* %add.ptr, i64 16, i32 1)
29 ; This cannot be optimize because the src/dst really do overlap.
30 define void @test3(i8* %P) nounwind {
33 ; CHECK: call void @llvm.memmove
34 %add.ptr = getelementptr i8* %P, i64 16 ; <i8*> [#uses=1]
35 tail call void @llvm.memmove.i64(i8* %P, i8* %add.ptr, i64 17, i32 1)