1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc -mtriple=x86_64-apple-darwin < %s | FileCheck %s 3 4; A MOV32ri is inside a loop, it has two successors, one successor is inside the 5; same loop, the other successor is outside the loop. We should be able to sink 6; MOV32ri outside the loop. 7; rdar://11980766 8define i32 @sink_succ(i32 %argc, ptr nocapture %argv) nounwind uwtable ssp { 9; CHECK-LABEL: sink_succ: 10; CHECK: ## %bb.0: ## %entry 11; CHECK-NEXT: xorl %eax, %eax 12; CHECK-NEXT: .p2align 4 13; CHECK-NEXT: LBB0_1: ## %preheader 14; CHECK-NEXT: ## =>This Loop Header: Depth=1 15; CHECK-NEXT: ## Child Loop BB0_2 Depth 2 16; CHECK-NEXT: ## Child Loop BB0_3 Depth 3 17; CHECK-NEXT: movl $1, %ecx 18; CHECK-NEXT: .p2align 4 19; CHECK-NEXT: LBB0_2: ## %for.body1.lr 20; CHECK-NEXT: ## Parent Loop BB0_1 Depth=1 21; CHECK-NEXT: ## => This Loop Header: Depth=2 22; CHECK-NEXT: ## Child Loop BB0_3 Depth 3 23; CHECK-NEXT: movl %ecx, %edx 24; CHECK-NEXT: .p2align 4 25; CHECK-NEXT: LBB0_3: ## %for.body1 26; CHECK-NEXT: ## Parent Loop BB0_1 Depth=1 27; CHECK-NEXT: ## Parent Loop BB0_2 Depth=2 28; CHECK-NEXT: ## => This Inner Loop Header: Depth=3 29; CHECK-NEXT: decl %edx 30; CHECK-NEXT: jne LBB0_3 31; CHECK-NEXT: ## %bb.4: ## %for.inc40.i 32; CHECK-NEXT: ## in Loop: Header=BB0_2 Depth=2 33; CHECK-NEXT: incl %ecx 34; CHECK-NEXT: cmpl $32, %ecx 35; CHECK-NEXT: jne LBB0_2 36; CHECK-NEXT: ## %bb.5: ## %exit 37; CHECK-NEXT: ## in Loop: Header=BB0_1 Depth=1 38; CHECK-NEXT: incl %eax 39; CHECK-NEXT: cmpl $10, %eax 40; CHECK-NEXT: jne LBB0_1 41; CHECK-NEXT: ## %bb.6: ## %for.body2.preheader 42; CHECK-NEXT: movl $2048, %eax ## imm = 0x800 43; CHECK-NEXT: .p2align 4 44; CHECK-NEXT: LBB0_7: ## %for.body2 45; CHECK-NEXT: ## =>This Inner Loop Header: Depth=1 46; CHECK-NEXT: decl %eax 47; CHECK-NEXT: jne LBB0_7 48; CHECK-NEXT: ## %bb.8: ## %for.end20 49; CHECK-NEXT: xorl %eax, %eax 50; CHECK-NEXT: retq 51entry: 52 br label %preheader 53 54preheader: 55 %i.127 = phi i32 [ 0, %entry ], [ %inc9, %exit ] 56 br label %for.body1.lr 57 58for.body1.lr: 59 %iv30 = phi i32 [ 1, %preheader ], [ %iv.next31, %for.inc40.i ] 60 br label %for.body1 61 62for.body1: 63 %iv.i = phi i64 [ 0, %for.body1.lr ], [ %iv.next.i, %for.body1 ] 64 %iv.next.i = add i64 %iv.i, 1 65 %lftr.wideiv32 = trunc i64 %iv.next.i to i32 66 %exitcond33 = icmp eq i32 %lftr.wideiv32, %iv30 67 br i1 %exitcond33, label %for.inc40.i, label %for.body1 68 69for.inc40.i: 70 %iv.next31 = add i32 %iv30, 1 71 %exitcond49.i = icmp eq i32 %iv.next31, 32 72 br i1 %exitcond49.i, label %exit, label %for.body1.lr 73 74exit: 75 %inc9 = add nsw i32 %i.127, 1 76 %exitcond34 = icmp eq i32 %inc9, 10 77 br i1 %exitcond34, label %for.body2, label %preheader 78 79for.body2: 80 %iv = phi i64 [ %iv.next, %for.body2 ], [ 0, %exit ] 81 %iv.next = add i64 %iv, 1 82 %lftr.wideiv = trunc i64 %iv.next to i32 83 %exitcond = icmp eq i32 %lftr.wideiv, 2048 84 br i1 %exitcond, label %for.end20, label %for.body2 85 86for.end20: 87 ret i32 0 88} 89 90define i32 @sink_out_of_loop(i32 %n, ptr %output) { 91; CHECK-LABEL: sink_out_of_loop: 92; CHECK: ## %bb.0: ## %entry 93; CHECK-NEXT: xorl %ecx, %ecx 94; CHECK-NEXT: .p2align 4 95; CHECK-NEXT: LBB1_1: ## %loop 96; CHECK-NEXT: ## =>This Inner Loop Header: Depth=1 97; CHECK-NEXT: movl %ecx, %eax 98; CHECK-NEXT: movl %ecx, (%rsi,%rcx,4) 99; CHECK-NEXT: incq %rcx 100; CHECK-NEXT: cmpl %edi, %ecx 101; CHECK-NEXT: jl LBB1_1 102; CHECK-NEXT: ## %bb.2: ## %exit 103; CHECK-NEXT: imull %eax, %eax 104; CHECK-NEXT: retq 105entry: 106 br label %loop 107 108loop: 109 %i = phi i32 [ 0, %entry ], [ %i2, %loop ] 110 %j = mul i32 %i, %i 111 %addr = getelementptr i32, ptr %output, i32 %i 112 store i32 %i, ptr %addr 113 %i2 = add i32 %i, 1 114 %exit_cond = icmp sge i32 %i2, %n 115 br i1 %exit_cond, label %exit, label %loop 116 117exit: 118 ret i32 %j 119} 120