1; RUN: opt -basicaa -memcpyopt -S < %s | FileCheck %s 2 3target 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" 4target triple = "x86_64-apple-macosx10.7.0" 5 6@x = global i32 0 7 8declare void @otherf(i32*) 9 10declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind 11 12; memcpyopt should not touch atomic ops 13define void @test1() nounwind uwtable ssp { 14; CHECK: test1 15; CHECK: store atomic 16 %x = alloca [101 x i32], align 16 17 %bc = bitcast [101 x i32]* %x to i8* 18 call void @llvm.memset.p0i8.i64(i8* %bc, i8 0, i64 400, i32 16, i1 false) 19 %gep1 = getelementptr inbounds [101 x i32]* %x, i32 0, i32 100 20 store atomic i32 0, i32* %gep1 unordered, align 4 21 %gep2 = getelementptr inbounds [101 x i32]* %x, i32 0, i32 0 22 call void @otherf(i32* %gep2) 23 ret void 24} 25 26; memcpyopt across unordered store 27define void @test2() nounwind uwtable ssp { 28; CHECK: test2 29; CHECK: call 30; CHECK-NEXT: store atomic 31; CHECK-NEXT: call 32 %old = alloca i32 33 %new = alloca i32 34 call void @otherf(i32* nocapture %old) 35 store atomic i32 0, i32* @x unordered, align 4 36 %v = load i32* %old 37 store i32 %v, i32* %new 38 call void @otherf(i32* nocapture %new) 39 ret void 40} 41 42