1*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -march=x86-64 -relocation-model=static -mtriple=x86_64-unknown-linux-gnu -asm-verbose=0 | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Worker; The inner loop should require only one add (and no leas either). 4*9880d681SAndroid Build Coastguard Worker; rdar://8100380 5*9880d681SAndroid Build Coastguard Worker 6*9880d681SAndroid Build Coastguard Worker; CHECK: BB0_2: 7*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: movb $0, flags(%rcx) 8*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: addq %rax, %rcx 9*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: cmpq $8192, %rcx 10*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: jl 11*9880d681SAndroid Build Coastguard Worker 12*9880d681SAndroid Build Coastguard Worker@flags = external global [8192 x i8], align 16 ; <[8192 x i8]*> [#uses=1] 13*9880d681SAndroid Build Coastguard Worker 14*9880d681SAndroid Build Coastguard Workerdefine void @foo() nounwind { 15*9880d681SAndroid Build Coastguard Workerentry: 16*9880d681SAndroid Build Coastguard Worker br label %bb 17*9880d681SAndroid Build Coastguard Worker 18*9880d681SAndroid Build Coastguard Workerbb: ; preds = %entry 19*9880d681SAndroid Build Coastguard Worker br label %bb7 20*9880d681SAndroid Build Coastguard Worker 21*9880d681SAndroid Build Coastguard Workerbb7: ; preds = %bb, %bb17 22*9880d681SAndroid Build Coastguard Worker %tmp8 = phi i64 [ %tmp18, %bb17 ], [ 2, %bb ] ; <i64> [#uses=2] 23*9880d681SAndroid Build Coastguard Worker br label %bb10 24*9880d681SAndroid Build Coastguard Worker 25*9880d681SAndroid Build Coastguard Workerbb10: ; preds = %bb7 26*9880d681SAndroid Build Coastguard Worker br label %bb11 27*9880d681SAndroid Build Coastguard Worker 28*9880d681SAndroid Build Coastguard Workerbb11: ; preds = %bb10, %bb11 29*9880d681SAndroid Build Coastguard Worker %tmp12 = phi i64 [ %tmp14, %bb11 ], [ 2, %bb10 ] ; <i64> [#uses=2] 30*9880d681SAndroid Build Coastguard Worker %tmp13 = getelementptr inbounds [8192 x i8], [8192 x i8]* @flags, i64 0, i64 %tmp12 ; <i8*> [#uses=1] 31*9880d681SAndroid Build Coastguard Worker store i8 0, i8* %tmp13, align 1 32*9880d681SAndroid Build Coastguard Worker %tmp14 = add nsw i64 %tmp12, %tmp8 ; <i64> [#uses=2] 33*9880d681SAndroid Build Coastguard Worker %tmp15 = icmp slt i64 %tmp14, 8192 ; <i1> [#uses=1] 34*9880d681SAndroid Build Coastguard Worker br i1 %tmp15, label %bb11, label %bb16 35*9880d681SAndroid Build Coastguard Worker 36*9880d681SAndroid Build Coastguard Workerbb16: ; preds = %bb11 37*9880d681SAndroid Build Coastguard Worker br label %bb17 38*9880d681SAndroid Build Coastguard Worker 39*9880d681SAndroid Build Coastguard Workerbb17: ; preds = %bb16, %bb7 40*9880d681SAndroid Build Coastguard Worker %tmp18 = add nsw i64 %tmp8, 1 ; <i64> [#uses=2] 41*9880d681SAndroid Build Coastguard Worker %tmp19 = icmp slt i64 %tmp18, 8192 ; <i1> [#uses=1] 42*9880d681SAndroid Build Coastguard Worker br i1 %tmp19, label %bb7, label %bb20 43*9880d681SAndroid Build Coastguard Worker 44*9880d681SAndroid Build Coastguard Workerbb20: ; preds = %bb17 45*9880d681SAndroid Build Coastguard Worker br label %bb21 46*9880d681SAndroid Build Coastguard Worker 47*9880d681SAndroid Build Coastguard Workerbb21: ; preds = %bb20, %entry 48*9880d681SAndroid Build Coastguard Worker ret void 49*9880d681SAndroid Build Coastguard Worker} 50