1 ; RUN: llc -mtriple=x86_64-apple-darwin < %s | FileCheck %s 2 3 ; A MOV32ri is inside a loop, it has two successors, one successor is inside the 4 ; same loop, the other successor is outside the loop. We should be able to sink 5 ; MOV32ri outside the loop. 6 ; rdar://11980766 7 define i32 @sink_succ(i32 %argc, i8** nocapture %argv) nounwind uwtable ssp { 8 ; CHECK-LABEL: sink_succ 9 ; CHECK: [[OUTER_LN1:LBB0_[0-9]+]]: ## %preheader 10 ; CHECK: %exit 11 ; CHECK-NOT: movl 12 ; CHECK: jne [[OUTER_LN1]] 13 ; CHECK: movl 14 ; CHECK: [[LN2:LBB0_[0-9]+]]: ## %for.body2 15 ; CHECK: jne [[LN2]] 16 ; CHECK: ret 17 entry: 18 br label %preheader 19 20 preheader: 21 %i.127 = phi i32 [ 0, %entry ], [ %inc9, %exit ] 22 br label %for.body1.lr 23 24 for.body1.lr: 25 %iv30 = phi i32 [ 1, %preheader ], [ %iv.next31, %for.inc40.i ] 26 br label %for.body1 27 28 for.body1: 29 %iv.i = phi i64 [ 0, %for.body1.lr ], [ %iv.next.i, %for.body1 ] 30 %iv.next.i = add i64 %iv.i, 1 31 %lftr.wideiv32 = trunc i64 %iv.next.i to i32 32 %exitcond33 = icmp eq i32 %lftr.wideiv32, %iv30 33 br i1 %exitcond33, label %for.inc40.i, label %for.body1 34 35 for.inc40.i: 36 %iv.next31 = add i32 %iv30, 1 37 %exitcond49.i = icmp eq i32 %iv.next31, 32 38 br i1 %exitcond49.i, label %exit, label %for.body1.lr 39 40 exit: 41 %inc9 = add nsw i32 %i.127, 1 42 %exitcond34 = icmp eq i32 %inc9, 10 43 br i1 %exitcond34, label %for.body2, label %preheader 44 45 for.body2: 46 %iv = phi i64 [ %iv.next, %for.body2 ], [ 0, %exit ] 47 %iv.next = add i64 %iv, 1 48 %lftr.wideiv = trunc i64 %iv.next to i32 49 %exitcond = icmp eq i32 %lftr.wideiv, 2048 50 br i1 %exitcond, label %for.end20, label %for.body2 51 52 for.end20: 53 ret i32 0 54 } 55 56 define i32 @sink_out_of_loop(i32 %n, i32* %output) { 57 ; CHECK-LABEL: sink_out_of_loop: 58 entry: 59 br label %loop 60 61 loop: 62 %i = phi i32 [ 0, %entry ], [ %i2, %loop ] 63 %j = mul i32 %i, %i 64 %addr = getelementptr i32, i32* %output, i32 %i 65 store i32 %i, i32* %addr 66 %i2 = add i32 %i, 1 67 %exit_cond = icmp sge i32 %i2, %n 68 br i1 %exit_cond, label %exit, label %loop 69 70 exit: 71 ; CHECK: BB#2 72 ; CHECK: imull %eax, %eax 73 ; CHECK: retq 74 ret i32 %j 75 } 76
