1*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -licm -S | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker; RUN: opt -passes='require<aa>,require<targetir>,require<scalar-evolution>,loop(licm)' < %s -S | FileCheck %s 3*9880d681SAndroid Build Coastguard Worker; PR19835 4*9880d681SAndroid Build Coastguard Workertarget datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 5*9880d681SAndroid Build Coastguard Workertarget triple = "x86_64-unknown-linux-gnu" 6*9880d681SAndroid Build Coastguard Worker 7*9880d681SAndroid Build Coastguard Workerdefine i32 @f(i32 %x) { 8*9880d681SAndroid Build Coastguard Workerentry: 9*9880d681SAndroid Build Coastguard Worker br label %for.body 10*9880d681SAndroid Build Coastguard Worker 11*9880d681SAndroid Build Coastguard Workerfor.body: ; preds = %entry, %for.body 12*9880d681SAndroid Build Coastguard Worker %storemerge4 = phi i32 [ 0, %entry ], [ %inc, %for.body ] 13*9880d681SAndroid Build Coastguard Worker %mul = mul nsw i32 %x, %x 14*9880d681SAndroid Build Coastguard Worker %add2 = add nsw i32 %mul, %x 15*9880d681SAndroid Build Coastguard Worker %mul3 = add nsw i32 %add2, %mul 16*9880d681SAndroid Build Coastguard Worker %inc = add nsw i32 %storemerge4, 1 17*9880d681SAndroid Build Coastguard Worker %cmp = icmp slt i32 %inc, 100 18*9880d681SAndroid Build Coastguard Worker br i1 %cmp, label %for.body, label %for.end 19*9880d681SAndroid Build Coastguard Worker 20*9880d681SAndroid Build Coastguard Workerfor.end: ; preds = %for.body 21*9880d681SAndroid Build Coastguard Worker %a9.0.lcssa = phi i32 [ %mul3, %for.body ] 22*9880d681SAndroid Build Coastguard Worker ret i32 %a9.0.lcssa 23*9880d681SAndroid Build Coastguard Worker} 24*9880d681SAndroid Build Coastguard Worker 25*9880d681SAndroid Build Coastguard Worker; Test that there is exactly one copy of mul nsw i32 %x, %x in the exit block. 26*9880d681SAndroid Build Coastguard Worker; CHECK: define i32 @f(i32 [[X:%.*]]) 27*9880d681SAndroid Build Coastguard Worker; CHECK: for.end: 28*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: mul nsw i32 [[X]], [[X]] 29*9880d681SAndroid Build Coastguard Worker; CHECK: mul nsw i32 [[X]], [[X]] 30*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: mul nsw i32 [[X]], [[X]] 31