1 ; RUN: llc < %s -march=x86-64 -relocation-model=static -mtriple=x86_64-unknown-linux-gnu
3 ; The inner loop should require only one add (and no leas either).
7 ; CHECK-NEXT: movb $0, flags(%rdx)
8 ; CHECK-NEXT: addq %rcx, %rdx
9 ; CHECK-NEXT: cmpq $8192, %rdx
12 @flags = external global [8192 x i8], align 16 ; <[8192 x i8]*> [#uses=1]
14 define void @foo() nounwind {
16 %tmp = icmp slt i64 2, 8192 ; <i1> [#uses=1]
17 br i1 %tmp, label %bb, label %bb21
22 bb7: ; preds = %bb, %bb17
23 %tmp8 = phi i64 [ %tmp18, %bb17 ], [ 2, %bb ] ; <i64> [#uses=2]
24 %tmp9 = icmp slt i64 2, 8192 ; <i1> [#uses=1]
25 br i1 %tmp9, label %bb10, label %bb17
30 bb11: ; preds = %bb10, %bb11
31 %tmp12 = phi i64 [ %tmp14, %bb11 ], [ 2, %bb10 ] ; <i64> [#uses=2]
32 %tmp13 = getelementptr inbounds [8192 x i8]* @flags, i64 0, i64 %tmp12 ; <i8*> [#uses=1]
33 store i8 0, i8* %tmp13, align 1
34 %tmp14 = add nsw i64 %tmp12, %tmp8 ; <i64> [#uses=2]
35 %tmp15 = icmp slt i64 %tmp14, 8192 ; <i1> [#uses=1]
36 br i1 %tmp15, label %bb11, label %bb16
41 bb17: ; preds = %bb16, %bb7
42 %tmp18 = add nsw i64 %tmp8, 1 ; <i64> [#uses=2]
43 %tmp19 = icmp slt i64 %tmp18, 8192 ; <i1> [#uses=1]
44 br i1 %tmp19, label %bb7, label %bb20
49 bb21: ; preds = %bb20, %entry