1*9880d681SAndroid Build Coastguard Worker; RUN: llc -march=x86 < %s | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Worker; The comparison happens after the relevant use, so the stride can easily 4*9880d681SAndroid Build Coastguard Worker; be changed. The comparison can be done in a narrower mode than the 5*9880d681SAndroid Build Coastguard Worker; induction variable. 6*9880d681SAndroid Build Coastguard Worker; TODO: By making the first store post-increment as well, the loop setup 7*9880d681SAndroid Build Coastguard Worker; could be made simpler. 8*9880d681SAndroid Build Coastguard Worker 9*9880d681SAndroid Build Coastguard Workerdefine void @foo() nounwind { 10*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: foo: 11*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: ret 12*9880d681SAndroid Build Coastguard Worker; CHECK: cmpl $10 13*9880d681SAndroid Build Coastguard Worker; CHECK: ret 14*9880d681SAndroid Build Coastguard Worker 15*9880d681SAndroid Build Coastguard Workerentry: 16*9880d681SAndroid Build Coastguard Worker br label %loop 17*9880d681SAndroid Build Coastguard Worker 18*9880d681SAndroid Build Coastguard Workerloop: 19*9880d681SAndroid Build Coastguard Worker %indvar = phi i32 [ 0, %entry ], [ %i.2.0.us1534, %loop ] ; <i32> [#uses=1] 20*9880d681SAndroid Build Coastguard Worker %i.2.0.us1534 = add i32 %indvar, 1 ; <i32> [#uses=3] 21*9880d681SAndroid Build Coastguard Worker %tmp628.us1540 = shl i32 %i.2.0.us1534, 1 ; <i32> [#uses=1] 22*9880d681SAndroid Build Coastguard Worker %tmp645646647.us1547 = sext i32 %tmp628.us1540 to i64 ; <i64> [#uses=1] 23*9880d681SAndroid Build Coastguard Worker store i64 %tmp645646647.us1547, i64* null 24*9880d681SAndroid Build Coastguard Worker %tmp611.us1535 = icmp eq i32 %i.2.0.us1534, 4 ; <i1> [#uses=2] 25*9880d681SAndroid Build Coastguard Worker %tmp623.us1538 = select i1 %tmp611.us1535, i32 6, i32 0 ; <i32> [#uses=1] 26*9880d681SAndroid Build Coastguard Worker store i32 %tmp623.us1538, i32* null 27*9880d681SAndroid Build Coastguard Worker br i1 %tmp611.us1535, label %exit, label %loop 28*9880d681SAndroid Build Coastguard Worker 29*9880d681SAndroid Build Coastguard Workerexit: 30*9880d681SAndroid Build Coastguard Worker ret void 31*9880d681SAndroid Build Coastguard Worker} 32