; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt -passes=memcpyopt -S < %s -verify-memoryssa | FileCheck %s 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" target triple = "x86_64-apple-macosx10.7.0" @x = global i32 0 declare void @otherf(ptr) declare void @llvm.memset.p0.i64(ptr nocapture, i8, i64, i1) nounwind ; memcpyopt should not touch atomic ops define void @test1() nounwind uwtable ssp { ; CHECK-LABEL: @test1( ; CHECK-NEXT: [[X:%.*]] = alloca [101 x i32], align 16 ; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 16 [[X]], i8 0, i64 400, i1 false) ; CHECK-NEXT: [[GEP1:%.*]] = getelementptr inbounds [101 x i32], ptr [[X]], i32 0, i32 100 ; CHECK-NEXT: store atomic i32 0, ptr [[GEP1]] unordered, align 4 ; CHECK-NEXT: call void @otherf(ptr [[X]]) ; CHECK-NEXT: ret void ; %x = alloca [101 x i32], align 16 call void @llvm.memset.p0.i64(ptr align 16 %x, i8 0, i64 400, i1 false) %gep1 = getelementptr inbounds [101 x i32], ptr %x, i32 0, i32 100 store atomic i32 0, ptr %gep1 unordered, align 4 call void @otherf(ptr %x) ret void } ; memcpyopt across unordered store define void @test2() nounwind uwtable ssp { ; CHECK-LABEL: @test2( ; CHECK-NEXT: [[OLD:%.*]] = alloca i32, align 4 ; CHECK-NEXT: [[NEW:%.*]] = alloca i32, align 4 ; CHECK-NEXT: call void @otherf(ptr nocapture [[NEW]]) ; CHECK-NEXT: store atomic i32 0, ptr @x unordered, align 4 ; CHECK-NEXT: call void @otherf(ptr nocapture [[NEW]]) ; CHECK-NEXT: ret void ; %old = alloca i32 %new = alloca i32 call void @otherf(ptr nocapture %old) store atomic i32 0, ptr @x unordered, align 4 %v = load i32, ptr %old store i32 %v, ptr %new call void @otherf(ptr nocapture %new) ret void }