1*9880d681SAndroid Build Coastguard Worker; RUN: opt -loop-idiom -S < %s | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Workertarget datalayout = "e-m: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 @test1() { 7*9880d681SAndroid Build Coastguard Workerentry: 8*9880d681SAndroid Build Coastguard Worker br label %for.body.preheader 9*9880d681SAndroid Build Coastguard Worker 10*9880d681SAndroid Build Coastguard Workerfor.body.preheader: ; preds = %for.cond 11*9880d681SAndroid Build Coastguard Worker br label %for.body 12*9880d681SAndroid Build Coastguard Worker 13*9880d681SAndroid Build Coastguard Workerfor.body: ; preds = %for.body, %for.body.preheader 14*9880d681SAndroid Build Coastguard Worker %indvars.iv = phi i32 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ] 15*9880d681SAndroid Build Coastguard Worker %add.ptr3 = getelementptr inbounds i32, i32* null, i32 %indvars.iv 16*9880d681SAndroid Build Coastguard Worker %add.ptr4 = getelementptr inbounds i32, i32* %add.ptr3, i32 1 17*9880d681SAndroid Build Coastguard Worker %0 = load i32, i32* %add.ptr4, align 4 18*9880d681SAndroid Build Coastguard Worker store i32 %0, i32* %add.ptr3, align 4 19*9880d681SAndroid Build Coastguard Worker %indvars.iv.next = add nsw i32 %indvars.iv, 1 20*9880d681SAndroid Build Coastguard Worker %exitcond = icmp ne i32 %indvars.iv.next, 6 21*9880d681SAndroid Build Coastguard Worker br i1 %exitcond, label %for.body, label %for.body.preheader 22*9880d681SAndroid Build Coastguard Worker} 23*9880d681SAndroid Build Coastguard Worker 24*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: define void @test1( 25*9880d681SAndroid Build Coastguard Worker; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* null, i8* inttoptr (i64 4 to i8*), i64 24, i32 4, i1 false) 26*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: store 27