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; RUN: opt -force-hardware-loops=true -hardware-loop-decrement=1 -hardware-loop-counter-bitwidth=32 -hardware-loops -S %s -o - | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-ALLOW
; RUN: opt -force-hardware-loops=true -hardware-loop-decrement=1 -hardware-loop-counter-bitwidth=32 -hardware-loops -force-hardware-loop-guard=true -S %s -o - | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-ALLOW
; RUN: opt -force-hardware-loops=true -hardware-loop-decrement=1 -hardware-loop-counter-bitwidth=32 -force-hardware-loop-phi=true -hardware-loops -S %s -o - | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-LATCH
; CHECK-LABEL: not_rotated
; CHECK-LATCH-NOT: call void @llvm.set.loop.iterations
; CHECK-LATCH-NOT: call i1 @llvm.loop.decrement
; CHECK-ALLOW: bb:
; CHECK-ALLOW: [[COUNT:%[^ ]+]] = add i32 %arg, 1
; CHECK-ALLOW: br label %bb3
; CHECK-ALLOW: bb5:
; CHECK-ALLOW: call void @llvm.set.loop.iterations.i32(i32 [[COUNT]])
; CHECK-ALLOW: br label %bb7
; CHECK-ALLOW: [[CMP:%[^ ]+]] = call i1 @llvm.loop.decrement.i32(i32 1)
; CHECK-ALLOW: br i1 [[CMP]], label %bb10, label %bb16
define void @not_rotated(i32 %arg, i16* nocapture %arg1, i16 signext %arg2) {
bb:
br label %bb3
bb3: ; preds = %bb16, %bb
%tmp = phi i32 [ 0, %bb ], [ %tmp17, %bb16 ]
%tmp4 = icmp eq i32 %tmp, %arg
br i1 %tmp4, label %bb18, label %bb5
bb5: ; preds = %bb3
%tmp6 = mul i32 %tmp, %arg
br label %bb7
bb7: ; preds = %bb10, %bb5
%tmp8 = phi i32 [ %tmp15, %bb10 ], [ 0, %bb5 ]
%tmp9 = icmp eq i32 %tmp8, %arg
br i1 %tmp9, label %bb16, label %bb10
bb10: ; preds = %bb7
%tmp11 = add i32 %tmp8, %tmp6
%tmp12 = getelementptr inbounds i16, i16* %arg1, i32 %tmp11
%tmp13 = load i16, i16* %tmp12, align 2
%tmp14 = add i16 %tmp13, %arg2
store i16 %tmp14, i16* %tmp12, align 2
%tmp15 = add i32 %tmp8, 1
br label %bb7
bb16: ; preds = %bb7
%tmp17 = add i32 %tmp, 1
br label %bb3
bb18: ; preds = %bb3
ret void
}
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