1*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -mtriple=thumbv7-apple-darwin10 -relocation-model=pic | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker; rdar://7387640 3*9880d681SAndroid Build Coastguard Worker 4*9880d681SAndroid Build Coastguard Worker; This now reduces to a single induction variable. 5*9880d681SAndroid Build Coastguard Worker 6*9880d681SAndroid Build Coastguard Worker@G = external global i32 ; <i32*> [#uses=2] 7*9880d681SAndroid Build Coastguard Worker@array = external global i32* ; <i32**> [#uses=1] 8*9880d681SAndroid Build Coastguard Worker 9*9880d681SAndroid Build Coastguard Workerdefine void @t() nounwind optsize { 10*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: t: 11*9880d681SAndroid Build Coastguard Worker; CHECK: mov{{.*}}, #1000 12*9880d681SAndroid Build Coastguard Workerentry: 13*9880d681SAndroid Build Coastguard Worker %.pre = load i32, i32* @G, align 4 ; <i32> [#uses=1] 14*9880d681SAndroid Build Coastguard Worker br label %bb 15*9880d681SAndroid Build Coastguard Worker 16*9880d681SAndroid Build Coastguard Workerbb: ; preds = %bb, %entry 17*9880d681SAndroid Build Coastguard Worker; CHECK: LBB0_1: 18*9880d681SAndroid Build Coastguard Worker; CHECK: subs [[R2:r[0-9]+]], #1 19*9880d681SAndroid Build Coastguard Worker; CHECK: cmp.w [[R2]], #-1 20*9880d681SAndroid Build Coastguard Worker; CHECK: bne LBB0_1 21*9880d681SAndroid Build Coastguard Worker 22*9880d681SAndroid Build Coastguard Worker %0 = phi i32 [ %.pre, %entry ], [ %3, %bb ] ; <i32> [#uses=1] 23*9880d681SAndroid Build Coastguard Worker %indvar = phi i32 [ 0, %entry ], [ %indvar.next, %bb ] ; <i32> [#uses=2] 24*9880d681SAndroid Build Coastguard Worker %tmp5 = sub i32 1000, %indvar ; <i32> [#uses=1] 25*9880d681SAndroid Build Coastguard Worker %1 = load i32*, i32** @array, align 4 ; <i32*> [#uses=1] 26*9880d681SAndroid Build Coastguard Worker %scevgep = getelementptr i32, i32* %1, i32 %tmp5 ; <i32*> [#uses=1] 27*9880d681SAndroid Build Coastguard Worker %2 = load i32, i32* %scevgep, align 4 ; <i32> [#uses=1] 28*9880d681SAndroid Build Coastguard Worker %3 = add nsw i32 %2, %0 ; <i32> [#uses=2] 29*9880d681SAndroid Build Coastguard Worker store i32 %3, i32* @G, align 4 30*9880d681SAndroid Build Coastguard Worker %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=2] 31*9880d681SAndroid Build Coastguard Worker %exitcond = icmp eq i32 %indvar.next, 1001 ; <i1> [#uses=1] 32*9880d681SAndroid Build Coastguard Worker br i1 %exitcond, label %return, label %bb 33*9880d681SAndroid Build Coastguard Worker 34*9880d681SAndroid Build Coastguard Workerreturn: ; preds = %bb 35*9880d681SAndroid Build Coastguard Worker ret void 36*9880d681SAndroid Build Coastguard Worker} 37