| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc -mtriple=x86_64-apple-darwin < %s | FileCheck %s |
| |
| ; A MOV32ri is inside a loop, it has two successors, one successor is inside the |
| ; same loop, the other successor is outside the loop. We should be able to sink |
| ; MOV32ri outside the loop. |
| ; rdar://11980766 |
| define i32 @sink_succ(i32 %argc, ptr nocapture %argv) nounwind uwtable ssp { |
| ; CHECK-LABEL: sink_succ: |
| ; CHECK: ## %bb.0: ## %entry |
| ; CHECK-NEXT: xorl %eax, %eax |
| ; CHECK-NEXT: .p2align 4, 0x90 |
| ; CHECK-NEXT: LBB0_1: ## %preheader |
| ; CHECK-NEXT: ## =>This Loop Header: Depth=1 |
| ; CHECK-NEXT: ## Child Loop BB0_2 Depth 2 |
| ; CHECK-NEXT: ## Child Loop BB0_3 Depth 3 |
| ; CHECK-NEXT: movl $1, %ecx |
| ; CHECK-NEXT: .p2align 4, 0x90 |
| ; CHECK-NEXT: LBB0_2: ## %for.body1.lr |
| ; CHECK-NEXT: ## Parent Loop BB0_1 Depth=1 |
| ; CHECK-NEXT: ## => This Loop Header: Depth=2 |
| ; CHECK-NEXT: ## Child Loop BB0_3 Depth 3 |
| ; CHECK-NEXT: movl %ecx, %edx |
| ; CHECK-NEXT: .p2align 4, 0x90 |
| ; CHECK-NEXT: LBB0_3: ## %for.body1 |
| ; CHECK-NEXT: ## Parent Loop BB0_1 Depth=1 |
| ; CHECK-NEXT: ## Parent Loop BB0_2 Depth=2 |
| ; CHECK-NEXT: ## => This Inner Loop Header: Depth=3 |
| ; CHECK-NEXT: decl %edx |
| ; CHECK-NEXT: jne LBB0_3 |
| ; CHECK-NEXT: ## %bb.4: ## %for.inc40.i |
| ; CHECK-NEXT: ## in Loop: Header=BB0_2 Depth=2 |
| ; CHECK-NEXT: incl %ecx |
| ; CHECK-NEXT: cmpl $32, %ecx |
| ; CHECK-NEXT: jne LBB0_2 |
| ; CHECK-NEXT: ## %bb.5: ## %exit |
| ; CHECK-NEXT: ## in Loop: Header=BB0_1 Depth=1 |
| ; CHECK-NEXT: incl %eax |
| ; CHECK-NEXT: cmpl $10, %eax |
| ; CHECK-NEXT: jne LBB0_1 |
| ; CHECK-NEXT: ## %bb.6: ## %for.body2.preheader |
| ; CHECK-NEXT: movl $2048, %eax ## imm = 0x800 |
| ; CHECK-NEXT: .p2align 4, 0x90 |
| ; CHECK-NEXT: LBB0_7: ## %for.body2 |
| ; CHECK-NEXT: ## =>This Inner Loop Header: Depth=1 |
| ; CHECK-NEXT: decl %eax |
| ; CHECK-NEXT: jne LBB0_7 |
| ; CHECK-NEXT: ## %bb.8: ## %for.end20 |
| ; CHECK-NEXT: xorl %eax, %eax |
| ; CHECK-NEXT: retq |
| entry: |
| br label %preheader |
| |
| preheader: |
| %i.127 = phi i32 [ 0, %entry ], [ %inc9, %exit ] |
| br label %for.body1.lr |
| |
| for.body1.lr: |
| %iv30 = phi i32 [ 1, %preheader ], [ %iv.next31, %for.inc40.i ] |
| br label %for.body1 |
| |
| for.body1: |
| %iv.i = phi i64 [ 0, %for.body1.lr ], [ %iv.next.i, %for.body1 ] |
| %iv.next.i = add i64 %iv.i, 1 |
| %lftr.wideiv32 = trunc i64 %iv.next.i to i32 |
| %exitcond33 = icmp eq i32 %lftr.wideiv32, %iv30 |
| br i1 %exitcond33, label %for.inc40.i, label %for.body1 |
| |
| for.inc40.i: |
| %iv.next31 = add i32 %iv30, 1 |
| %exitcond49.i = icmp eq i32 %iv.next31, 32 |
| br i1 %exitcond49.i, label %exit, label %for.body1.lr |
| |
| exit: |
| %inc9 = add nsw i32 %i.127, 1 |
| %exitcond34 = icmp eq i32 %inc9, 10 |
| br i1 %exitcond34, label %for.body2, label %preheader |
| |
| for.body2: |
| %iv = phi i64 [ %iv.next, %for.body2 ], [ 0, %exit ] |
| %iv.next = add i64 %iv, 1 |
| %lftr.wideiv = trunc i64 %iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, 2048 |
| br i1 %exitcond, label %for.end20, label %for.body2 |
| |
| for.end20: |
| ret i32 0 |
| } |
| |
| define i32 @sink_out_of_loop(i32 %n, ptr %output) { |
| ; CHECK-LABEL: sink_out_of_loop: |
| ; CHECK: ## %bb.0: ## %entry |
| ; CHECK-NEXT: xorl %ecx, %ecx |
| ; CHECK-NEXT: .p2align 4, 0x90 |
| ; CHECK-NEXT: LBB1_1: ## %loop |
| ; CHECK-NEXT: ## =>This Inner Loop Header: Depth=1 |
| ; CHECK-NEXT: movl %ecx, %eax |
| ; CHECK-NEXT: movl %ecx, (%rsi,%rcx,4) |
| ; CHECK-NEXT: incq %rcx |
| ; CHECK-NEXT: cmpl %edi, %ecx |
| ; CHECK-NEXT: jl LBB1_1 |
| ; CHECK-NEXT: ## %bb.2: ## %exit |
| ; CHECK-NEXT: imull %eax, %eax |
| ; CHECK-NEXT: retq |
| entry: |
| br label %loop |
| |
| loop: |
| %i = phi i32 [ 0, %entry ], [ %i2, %loop ] |
| %j = mul i32 %i, %i |
| %addr = getelementptr i32, ptr %output, i32 %i |
| store i32 %i, ptr %addr |
| %i2 = add i32 %i, 1 |
| %exit_cond = icmp sge i32 %i2, %n |
| br i1 %exit_cond, label %exit, label %loop |
| |
| exit: |
| ret i32 %j |
| } |