| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc < %s -relocation-model=static -mtriple=x86_64-unknown-linux-gnu | FileCheck %s |
| |
| ; The inner loop should require only one add (and no leas either). |
| ; rdar://8100380 |
| |
| @flags = external dso_local global [8192 x i8], align 16 ; <ptr> [#uses=1] |
| |
| define void @foo() nounwind { |
| ; CHECK-LABEL: foo: |
| ; CHECK: # %bb.0: # %entry |
| ; CHECK-NEXT: movl $2, %eax |
| ; CHECK-NEXT: .p2align 4, 0x90 |
| ; CHECK-NEXT: .LBB0_1: # %bb7 |
| ; CHECK-NEXT: # =>This Loop Header: Depth=1 |
| ; CHECK-NEXT: # Child Loop BB0_2 Depth 2 |
| ; CHECK-NEXT: movl $2, %ecx |
| ; CHECK-NEXT: .p2align 4, 0x90 |
| ; CHECK-NEXT: .LBB0_2: # %bb11 |
| ; CHECK-NEXT: # Parent Loop BB0_1 Depth=1 |
| ; CHECK-NEXT: # => This Inner Loop Header: Depth=2 |
| ; CHECK-NEXT: movb $0, flags(%rcx) |
| ; CHECK-NEXT: addq %rax, %rcx |
| ; CHECK-NEXT: cmpq $8192, %rcx # imm = 0x2000 |
| ; CHECK-NEXT: jl .LBB0_2 |
| ; CHECK-NEXT: # %bb.3: # %bb16 |
| ; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1 |
| ; CHECK-NEXT: incq %rax |
| ; CHECK-NEXT: cmpq $8192, %rax # imm = 0x2000 |
| ; CHECK-NEXT: jl .LBB0_1 |
| ; CHECK-NEXT: # %bb.4: # %bb20 |
| ; CHECK-NEXT: retq |
| entry: |
| br label %bb |
| |
| bb: ; preds = %entry |
| br label %bb7 |
| |
| bb7: ; preds = %bb, %bb17 |
| %tmp8 = phi i64 [ %tmp18, %bb17 ], [ 2, %bb ] ; <i64> [#uses=2] |
| br label %bb10 |
| |
| bb10: ; preds = %bb7 |
| br label %bb11 |
| |
| bb11: ; preds = %bb10, %bb11 |
| %tmp12 = phi i64 [ %tmp14, %bb11 ], [ 2, %bb10 ] ; <i64> [#uses=2] |
| %tmp13 = getelementptr inbounds [8192 x i8], ptr @flags, i64 0, i64 %tmp12 ; <ptr> [#uses=1] |
| store i8 0, ptr %tmp13, align 1 |
| %tmp14 = add nsw i64 %tmp12, %tmp8 ; <i64> [#uses=2] |
| %tmp15 = icmp slt i64 %tmp14, 8192 ; <i1> [#uses=1] |
| br i1 %tmp15, label %bb11, label %bb16 |
| |
| bb16: ; preds = %bb11 |
| br label %bb17 |
| |
| bb17: ; preds = %bb16, %bb7 |
| %tmp18 = add nsw i64 %tmp8, 1 ; <i64> [#uses=2] |
| %tmp19 = icmp slt i64 %tmp18, 8192 ; <i1> [#uses=1] |
| br i1 %tmp19, label %bb7, label %bb20 |
| |
| bb20: ; preds = %bb17 |
| br label %bb21 |
| |
| bb21: ; preds = %bb20, %entry |
| ret void |
| } |