1*9880d681SAndroid Build Coastguard Worker; RUN: llc -march=hexagon -mcpu=hexagonv5 -O2 -disable-block-placement=0 < %s | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Worker; Test that there is no redundant register assignment in the hardware loop 4*9880d681SAndroid Build Coastguard Worker; preheader. 5*9880d681SAndroid Build Coastguard Worker 6*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: r{{.*}} = #5 7*9880d681SAndroid Build Coastguard Worker 8*9880d681SAndroid Build Coastguard Worker@g = external global i32 9*9880d681SAndroid Build Coastguard Worker 10*9880d681SAndroid Build Coastguard Workerdefine void @foo() #0 { 11*9880d681SAndroid Build Coastguard Workerentry: 12*9880d681SAndroid Build Coastguard Worker br i1 undef, label %if.end38, label %for.body 13*9880d681SAndroid Build Coastguard Worker 14*9880d681SAndroid Build Coastguard Workerfor.body: 15*9880d681SAndroid Build Coastguard Worker %loopIdx.051 = phi i32 [ %inc, %for.body ], [ 0, %entry ] 16*9880d681SAndroid Build Coastguard Worker store i32 1, i32* @g, align 4 17*9880d681SAndroid Build Coastguard Worker %inc = add i32 %loopIdx.051, 1 18*9880d681SAndroid Build Coastguard Worker %cmp9 = icmp ult i32 %inc, 5 19*9880d681SAndroid Build Coastguard Worker br i1 %cmp9, label %for.body, label %if.end38 20*9880d681SAndroid Build Coastguard Worker 21*9880d681SAndroid Build Coastguard Workerif.end38: 22*9880d681SAndroid Build Coastguard Worker ret void 23*9880d681SAndroid Build Coastguard Worker} 24